HSBC Service Company Germany GmbH HSBC Service Company Germany GmbH [Member] HSBC Service Company Germany GmbH Swiss franc-denominated structural foreign exchange Switzerland, Francs Disclosure of contingent liabilities [line items] Disclosure of contingent liabilities [line items] American Depositary Shares, each representing 5 Ordinary Shares of nominal value US$0.50 each (US4042804066) American Depository Shares [Member] American Depository Shares Guarantees, highest amount during the year Guarantees, Related Party Transactions, Highest Amount During The Year Guarantees, Related Party Transactions, Highest Amount During The Year Net cash flows from the purchase and sale of property, plant and equipment Purchase of property, plant and equipment, classified as investing activities 4.583% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 (US404280BT50) 4.583% Fixed/Floating Rate Senior Unsecured Notes Due 2029 [Member] 4.583% Fixed/Floating Rate Senior Unsecured Notes Due 2029 Amounts payable on demand Amounts payable on demand that arise from contracts within scope of IFRS 17 Wages and salaries Wages and salaries Proportion of ownership interests and voting rights held by non-controlling interests (%) Proportion of ownership interests held by non-controlling interests Entity File Number Entity File Number HSBC Mexico, S.A., Institución de Banca Múltiple, Grupo Financiero HSBC HSBC Mexico, S.A., Institución de Banca Múltiple,Grupo Financiero HSBC [Member] HSBC Mexico, S.A., Institución de Banca Múltiple,Grupo Financiero HSBC [Member] After four years After Four Years [Member] After Four Years [Member] Deferred tax asset, expiration period, without expiry date Deferred Tax Asset, Expiration Period, Without Expiry Date Deferred Tax Asset, Expiration Period, Without Expiry Date Average RoTE outcome with CET1 underpin Share-Based Compensation Arrangement By Share-Based Payment Award, Outcome Of Performance Metric, Average Return On Equity Share-Based Compensation Arrangement By Share-Based Payment Award, Outcome Of Performance Metric, Average Return On Equity SNCB/M6-2007 B SNCB/M6-2007 B [Member] SNCB/M6-2007 B [Member] Loans and advances to banks Loans and advances to HSBC undertakings Due from and placements with banks and other financial institutions Loans and advances to banks Red Hexagon Energy Transition Asia GP S.à r.l. Red Hexagon Energy Transition Asia GP S.à r.l. [Member] Red Hexagon Energy Transition Asia GP S.à r.l. Net change in expected credit loss provision and other movements Increase (decrease) in other provisions Incurred claims Liabilities for incurred claims [member] Notional contract amount of trading instruments Notional Amount Of Derivative Trading Instruments Notional Amount Of Derivative Trading Instruments Levels of fair value hierarchy [domain] Levels of fair value hierarchy [domain] Non-dynamic fair value hedges Non-Dynamic Fair Value Hedges [Member] Non-Dynamic Fair Value Hedges Giller Ltd. Giller Ltd. [Member] Giller Ltd. [Member] Hedges of interest rates Hedges of Interest Rates [Member] Hedges of Interest Rates Independent review of Valuation, minimum term Independent Review Of Valuation, Minimum Term Independent Review Of Valuation, Minimum Term Inter-segment Elimination of intersegment amounts [member] Honey Silver Enterprises Limited Honey Silver Enterprises Limited [Member] Honey Silver Enterprises Limited Net defined benefit liability (asset) [axis] Net defined benefit liability (asset) [axis] Annual Maximum Scorecard Opportunity Annual Maximum Scorecard Opportunity Annual Maximum Scorecard Opportunity Financial assets designated and otherwise mandatorily measured at fair value through profit or loss Disclosure of financial instruments designated at fair value through profit or loss [text block] The Group's share of equity Share Of Total Shareholders' Equity Of Associates Share Of Total Shareholders' Equity Of Associates Credit impaired Credit Impaired [Member] Credit Impaired [Member] Desarrollo Turistico, S.A. de C.V. (In Liquidation) Desarrollo Turistico, S.A. de C.V. (In Liquidation) [Member] Desarrollo Turistico, S.A. de C.V. (In Liquidation) Equity instruments designated at fair value through other comprehensive income – equity instruments designated at fair value through other comprehensive income Other comprehensive income, net of tax, gains (losses) from investments in equity instruments Sales Sales, fair value measurement, assets Balance Sheet Location [Domain] Balance Sheet Location1 [Domain] [Domain] for Balance Sheet Location [Axis] Other Incentive Awards, Other Adjustments Incentive Awards, Other Adjustments Released in the year (in shares) Shares vested (in shares) Number of other equity instruments exercised or vested in share-based payment arrangement MP Payments Group Limited MP Payments Group Limited [Member] MP Payments Group Limited HSBC Insurance SAC 2 (Bermuda) Limited HSBC Insurance SAC 2 (Bermuda) Limited [Member] HSBC Insurance SAC 2 (Bermuda) Limited [Member] Financial assets designated and otherwise mandatorily measured at fair value through profit or loss Designated at fair value Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] Disclosure of description of shares from interests in subsidiaries, joint ventures, and associates Disclosure Of Description Of Shares From Interests In Subsidiaries, Joint Arrangements, And Associates [Table Text Block] Disclosure Of Description Of Shares From Interests In Subsidiaries, Joint Arrangements, And Associates [Table Text Block] HSBC Institutional Trust Services (Bermuda) Limited HSBC Institutional Trust Services (Bermuda) Limited [Member] HSBC Institutional Trust Services (Bermuda) Limited [Member] 7.625% Subordinated Notes due 2032 (US404280DK24) 7.625% Subordinated Notes due 2032 [Member] 7.625% Subordinated Notes due 2032 Goodwill and intangible assets Goodwill and intangible assets beginning balance Goodwill and intangible assets ending balance Intangible assets and goodwill Amounts owed to HSBC undertakings Amounts owed to HSBC undertakings Payables to related parties Statement of comprehensive income [abstract] Statement of comprehensive income [abstract] Aiera, Inc, Aiera, Inc, [Member] Aiera, Inc, Total incentive awards approved for the current year Incentive Awards, Granted In Current Year Incentive Awards, Granted In Current Year HSBC Group Nominees UK Limited HSBC Group Nominees UK Limited [Member] HSBC Group Nominees UK Limited [Member] Foreign exchange-related investigations and litigation Foreign Exchange-Related Investigations And Litigation [Member] Foreign Exchange-Related Investigations And Litigation Unemployment rate (%) Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Unemployment Rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Unemployment Rate – derivatives Derivatives, amount contributed to fair value of plan assets Bonds Bonds, Liabilities [Member] Bonds, Liabilities – non-trading assets Non-Trading Financial Assets [Member] Non-Trading Financial Assets [Member] Disclosure Of Market Risk Sensitivity Analysis [Line Items] Disclosure Of Market Risk Sensitivity Analysis [Line Items] [Line Items] for Disclosure Of Market Risk Sensitivity Analysis [Table] Vested Tranche Share-based Payment Arrangement, Tranche Share-based Payment Arrangement, Tranche Estimated reduction in cost Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Estimated Reduction In Cost Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Estimated Reduction In Cost Aged 60, Male Aged 60, Male [Member] Aged 65, Male [Member] Taiwan Nova Solar 1 Limited Taiwan Nova Solar 1 Limited [Member] Taiwan Nova Solar 1 Limited Savings-related Share Option Plans Savings-related Share Option Plans [Member] Savings-related Share Option Plans [Member] – tax impact of sale of HSBC Argentina Tax Rate Effect Of Sale Of Subsidiary Tax Rate Effect Of Sale Of Subsidiary Interest income and expense Description of accounting policy for interest income and expense [text block] Collateralised Loans And Advances [Domain] Collateralised Loans And Advances [Domain] [Domain] for Collateralised Loans And Advances [Axis] Diversified Loan Fund – Syndicated Loan A S.a.r.l Diversified Loan Fund – Syndicated Loan A S.a.r.l [Member] Diversified Loan Fund – Syndicated Loan A S.a.r.l Fair value of derivative assets, highest balance during the year Derivative Assets, At Fair Value, Related Party, Highest Balance During The Year Derivative Assets, At Fair Value, Related Party, Highest Balance During The Year Loan To Value [Domain] Loan To Value1 [Domain] [Domain] for Loan To Value1 [Axis] Red Hexagon ETA Tekoma Operation Limited Red Hexagon ETA Tekoma Operation Limited [Member] Red Hexagon ETA Tekoma Operation Limited Effective tax rate in the long-term Description Of Long Term Effective Tax Rate In Future Estimate Of Value In Use Description Of Long Term Effective Tax Rate In Future Estimate Of Value In Use Additional tier 1 securities Additional Tier One Securities [Member] Additional Tier One Securities Gain (loss) recognised discontinued operation, excluding hedging gain Gain (Loss) Recognised On Measurement To Fair Value Less Costs To Sell Or On Disposal Of Assets Or Disposal Groups Constituting Discontinued Operation, Excluding Hedging Gain Gain (Loss) Recognised On Measurement To Fair Value Less Costs To Sell Or On Disposal Of Assets Or Disposal Groups Constituting Discontinued Operation, Excluding Hedging Gain 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280EM70) 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 [Member] 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 Provisions Description of accounting policy for provisions [text block] HSBC Global Custody Proprietary Nominee (UK) Limited HSBC Global Custody Proprietary Nominee (UK) Limited [Member] HSBC Global Custody Proprietary Nominee (UK) Limited [Member] HSBC Continental Europe HSBC Continental Europe [Member] HSBC Continental Europe Floating Rate Senior Unsecured Notes due 2031 (US404280EU96) Floating Rate Senior Unsecured Notes due 2031 (US404280EU96) [Member] Floating Rate Senior Unsecured Notes due 2031 (US404280EU96) Other Other Disposal Groups [Member] Other Disposal Groups Midcorp Limited (In Liquidation) Midcorp Limited [Member] Midcorp Limited [Member] Asian employees represented in leadership Measure Of Asian Employees Representation In Leadership [Member] Measure Of Asian Employees Representation In Leadership Insurance business Disclosure of insurance contracts [text block] Share premium account Share premium – debt securities in issue: unsecured Debt Securities, Unsecured [Member] Debt Securities, Unsecured [Member] Historical Trading Activities Historical Trading Activities [Member] Historical Trading Activities Cash flows from (used in) financing activities [abstract] Cash flows from (used in) financing activities [abstract] HSBC Global Asset Management (UK) Limited HSBC Global Asset Management (UK) Limited [Member] HSBC Global Asset Management (UK) Limited [Member] Other movements recognised in insurance service result Other Increase (Decrease), Insurance Service Result, Insurance Contracts Liability (Asset) Other Increase (Decrease), Insurance Service Result, Insurance Contracts Liability (Asset) Loss contingency, damages sought Loss Contingency, Damages Sought1 Loss Contingency, Damages Sought1 Remeasurement effects recognised in other comprehensive income Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income – cash flow hedges Other Comprehensive Income, Net Of Tax, Cash Flow Hedges, Excluding Disposal Of Subsidiary Other Comprehensive Income, Net Of Tax, Cash Flow Hedges, Excluding Disposal Of Subsidiary +100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Shift In Credit Spreads Quantexa Limited Quantexa Limited [Member] Quantexa Limited [Member] HSBC RCF HoldCo S.à r.l. HSBC RCF HoldCo S.à r.l. [Member] HSBC RCF HoldCo S.à r.l. HSBC Casa de Bolsa, S.A. de C.V., Grupo Financiero HSBC HSBC Casa de Bolsa, S.A. de C.V., Grupo Financiero HSBC [Member] HSBC Casa de Bolsa, S.A. de C.V., Grupo Financiero HSBC Charterhouse Administrators ( D.T.) Limited Charterhouse Administrators ( D.T.) Limited [Member] Charterhouse Administrators ( D.T.) Limited [Member] HSBC Servicios Financieros, S.A. de C.V HSBC Servicios Financieros, S.A. de C.V [Member] HSBC Servicios Financieros, S.A. de C.V Total comprehensive income/(expense) for the year – total comprehensive income for the year Comprehensive income Bernard L. Madoff Investment Securities LLC Matters Bernard L. Madoff Investment Securities LLC Matters [Member] Bernard L. Madoff Investment Securities LLC Matters Disclosure of net defined benefit liability (asset) Disclosure of net defined benefit liability (asset) [text block] Net remeasurement of ECL arising from transfer of stage Increase (Decrease) Through Remeasurement Of Expected Credit Losses From Transfer Of Stages, Financial Assets Increase (Decrease) Through Remeasurement Of Expected Credit Losses From Transfer Of Stages, Financial Assets HSBC Custody Nominees (Australia) Limited HSBC Custody Nominees (Australia) Limited [Member] HSBC Custody Nominees (Australia) Limited [Member] Derivatives Derivative Financial Liabilities, Highest Amount During The Year Derivative Financial Liabilities, Highest Amount During The Year Net amounts in the balance sheet Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position Repurchase agreements – non-trading Repurchase agreements Reverse repurchase agreements – non-trading Repurchase Agreement [Member] Repurchase Agreement [Member] Number of hearings Loss Contingency, Number Of Hearings Loss Contingency, Number Of Hearings Fee income arising from trust and fiduciary activities Fee Income Arising From Trust And Fiduciary Activities Fee Income Arising From Trust And Fiduciary Activities HSBC Equipment Finance (UK) Limited HSBC Equipment Finance (UK) Limited [Member] HSBC Equipment Finance (UK) Limited [Member] Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items] Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items] Asian employee representation % Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Asian Heritage Employees At Senior Management Level, Actual, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Asian Heritage Employees At Senior Management Level, Actual, Percentage HSBC (Guernsey) GP PCC Limited HSBC (Kuala Lumpur) Nominees Sdn Bhd [Member] HSBC (Kuala Lumpur) Nominees Sdn Bhd [Member] Other equity instruments Other Equity Instruments Other Equity Instruments HSBC Diversified Loan Fund – Master S.a.r.l. HSBC Diversified Loan Fund – Master S.a.r.l. [Member] HSBC Diversified Loan Fund – Master S.a.r.l. Percentile level of stress, ultimate risk view Percentile Level Of Stress, Ultimate Risk View Percentile Level Of Stress, Ultimate Risk View Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] Disclosure of transferred financial assets that are not derecognised in their entirety [line items] Disclosure of transferred financial assets that are not derecognised in their entirety [line items] Other financial liabilities Other financial liabilities – fourth interim dividend Fourth Quarter Dividend, Previous Year [Member] Fourth Quarter Dividend [Member] Tax Description of accounting policy for income tax [text block] Divido Financial Services Limited (In Administration) Divido Financial Services Limited (In Administration) [Member] Divido Financial Services Limited (In Administration) 4.375% Subordinated Notes due 2026 (US404280BH13) 4.375% Subordinated Notes Due Nov 2026 [Member] 4.375% Subordinated Notes Due Nov 2026 [Member] Employee compensation and benefits Disclosure Of Employee Benefits And Share-Based Payment Arrangements [Text Block] Disclosure Of Employee Benefits And Share-Based Payment Arrangements [Text Block] Goodwill Description of accounting policy for goodwill [text block] Trading Symbol Trading Symbol Change in financial assets designated and otherwise mandatorily measured at fair value Adjustments for decrease (increase) in financial assets at fair value through profit or loss, mandatorily measured at fair value Marks and Spencer Financial Services plc Marks and Spencer Financial Services plc [Member] Marks and Spencer Financial Services plc Number of economic scenarios, external consensus forecasts Number Of Economic Scenarios To Calculate ECL, External Consensus forecasts Number Of Economic Scenarios To Calculate ECL, External Consensus forecasts Industry Sector [Axis] Industry Sector 1 [Axis] Industry Sector 1 [Axis] Hong Kong Government Hong Kong Government Securities [Member] Hong Kong Government Securities [Member] Financial investments Financial Assets Available-for-sale And Held-to-maturity Investments, Category [Member] Financial Assets Available-for-sale And Held-to-maturity Investments, Category [Member] Balance Sheet Components [Axis] Balance Sheet Components [Axis] Balance Sheet Components [Axis] Derivatives Derivative Financial Assets, Highest Amount During The Year Derivative Financial Assets, Highest Amount During The Year Net amount Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements Less: Shares repurchased and cancelled (in shares) Stock Repurchased And Retired During Period, Shares1 Stock Repurchased And Retired During Period, Shares1 Disclosure of reconciliation of changes in insurance contracts by components [line items] Disclosure of reconciliation of changes in insurance contracts by components [line items] Percentage increase on import tariffs imposed Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Percentage of Increased Tariffs Imposed On Imports By USA Silkroad GP II S.a.r.l. Silkroad GP II S.a.r.l. [Member] Silkroad GP II S.a.r.l. Number of non-cumulative sterling preference shares (in shares) Number Of Non-Cumulative Sterling Preference Shares Number Of Non-Cumulative Sterling Preference Shares Hang Seng Insurance Co Ltd Hang Seng Insurance Company Limited [Member] Hang Seng Insurance Company Limited [Member] 2,000–5,000 Asset Carrying Amount, $2,000,000,001 To $5,000,000,000 [Member] Asset Carrying Amount, $2,000,000,001 To $5,000,000,000 [Member] Classes of other provisions [domain] Classes of other provisions [domain] Base salary Directors Remuneration Expense, Base Salary Directors Remuneration Expense, Base Salary Upside and central scenarios Upside And Central Scenarios [Member] Upside And Central Scenarios Effect on CSM due to increase in risk variable Increase (Decrease) In Contractual Service Margin Due To Reasonably Possible Increase In Risk Variable That Arises From Contracts Within Scope Of IFRS 17 Increase (Decrease) In Contractual Service Margin Due To Reasonably Possible Increase In Risk Variable That Arises From Contracts Within Scope Of IFRS 17 Hong Kong Government certificates of indebtedness Government Certificates Of Indebtedness [Member] Government Certificates Of Indebtedness [Member] Cards Card Services Fee Income Card Services Fee Income Fees paid for additional positions held Key Management Personnel Compensation, Fees Paid For Additional Positions Held Key Management Personnel Compensation, Fees Paid For Additional Positions Held HSBC Trinkaus Real Estate GmbH HSBC Trinkaus Real Estate GmbH [Member] HSBC Trinkaus Real Estate GmbH [Member] HSBC InvestDirect Financial Services (India) Limited HSBC InvestDirect Financial Services (India) Limited [Member] HSBC InvestDirect Financial Services (India) Limited [Member] Hang Seng Finance Limited Hang Seng Finance Limited [Member] Hang Seng Finance Limited [Member] Financial instruments Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial assets Less: deferred bonuses awarded, expected to be recognised in future periods Incentive Awards, Current Year Portion Deferred Incentive Awards, Current Year Portion Deferred Expected cash contribution Disposal Groups, Expected Cash Contribution Disposal Groups, Expected Cash Contribution Weighted average share price at the date the options were exercise (in dollars per share) Weighted average share price for share options in share-based payment arrangement exercised during period at date of exercise % of annual incentive in shares Directors Remuneration Expense, Annual Incentive, Share Percentage Directors Remuneration Expense, Annual Incentive, Share Percentage Subordinated loan capital issued Proceeds from issue of subordinated liabilities Honey Grey Enterprises Limited Honey Grey Enterprises Limited [Member] Honey Grey Enterprises Limited Asset-backed securities Asset-Backed Securities1 [Member] Asset-backed Securities1 [Member] Operating segments excluding intersegment elimination Operating Segments Excluding Intersegment Elimination [Member] Operating Segments Excluding Intersegment Elimination Tax expense Taxation at UK corporation tax rate of 25.0% (2024: 25.0%, 2023: 23.5%) Tax expense (income) at applicable tax rate Chief Executive Officer Chief Executive Officer [Member] Disclosure of financial assets that are either past due or impaired Disclosure of financial assets that are either past due or impaired [text block] Exercise price of outstanding share options (in GBP per share) Exercise price of outstanding share options Recovery of insurance acquisition cash flows Insurance revenue, allocation of portion of premiums that relate to recovery of insurance acquisition cash flows Accumulated other comprehensive income (and other reserves) Common Equity Tier One Capital, Accumulated Other Comprehensive Income And Other Reserves Common Equity Tier One Capital, Accumulated Other Comprehensive Income And Other Reserves Internally generated software Technology-based intangible assets [member] Effect of risk mitigation option Increase (decrease) in profit (loss) due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17, insurance contracts issued before mitigation by reinsurance contracts held Due over 3 months but not more than 1 year Later than three months and not later than one year [member] Assets Assets Assets [abstract] long-dated swaptions Other Derivative Assets, Long-Dated Swaptions [Member] Other Derivative Assets, Long-Dated Swaptions [Member] Transfers in Transfers into Level 3 of fair value hierarchy, liabilities HSBC Subsidiaries HSBC Subsidiaries [Member] HSBC Subsidiaries [Member] - assets held for sale Assets held for sale Disposal groups classified as held for sale [member] 0.1–1.2 CRR 0.1-1.2 [Member] CRR 0.1-1.2 Accruals, deferred income and other liabilities Disclosure of accrued expenses and other liabilities [text block] Revenue Revenue [abstract] Conditional share awards Conditional Share Awards [Member] Conditional Share Awards [Member] -100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Parallel Shift In Yield Curves Deliver benefits of announced organisational changes Measure Of Employee Experience [Member] Measure Of Employee Experience Early redemption of legacy securities Revenue From Early Redemption Of Legacy Securities Revenue From Early Redemption Of Legacy Securities Target basis operating expenses ($bn) Measure Of Operating Expenses [Member] Measure Of Operating Expenses Document Information [Line Items] Document Information [Line Items] Trinkaus Immobilien-Fonds Verwaltungs-GmbH Trinkaus Immobilien-Fonds Verwaltungs-GmbH [Member] Trinkaus Immobilien-Fonds Verwaltungs-GmbH [Member] – deductions for AT1 coupon payments Tax Rate Effect Of Deductions For AT1 Coupon Payments Tax Rate Effect Of Deductions For AT1 Coupon Payments Other contracts Increase (decrease) through insurance revenue not related to contracts that existed at transition date to which modified retrospective approach or fair value approach has been applied, insurance contracts liability (asset) Capital reallocation to Asia Performance Metric, Capital Reallocation To Asia [Member] Performance Metric, Capital Reallocation To High Growths Areas Concentration Risk Benchmark [Axis] Concentration Risk Benchmark1 [Axis] Concentration Risk Benchmark1 [Axis] Amounts owed to HSBC undertakings Payables To Related Parties, Highest Amount During The Year Payables To Related Parties, Highest Amount During The Year HSBC Cayman Services Limited HSBC Cayman Services Limited [Member] HSBC Cayman Services Limited [Member] Amortisation and impairment of intangible assets Amortisation And Impairment (Reversal Of Impairment) Recognised In Profit Or Loss, Intangible Assets Other Than Goodwill Amortisation And Impairment (Reversal Of Impairment) Recognised In Profit Or Loss, Intangible Assets Other Than Goodwill Face value awarded Share-Based Payment Arrangement, Face Value Of Shares Awarded Share-Based Payment Arrangement, Face Value Of Shares Awarded Other portfolios Other Portfolio Assets, Miscellaneous [Member] Other Portfolio Assets, Miscellaneous [Member] 10% increase in growth assets Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Equity Prices Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Equity Prices RLUKREF Nominees (UK) Two Limited RLUKREF Nominees (UK) Two Limited [Member] RLUKREF Nominees (UK) Two Limited [Member] Dividends paid on ordinary shares Dividends Paid On Ordinary Shares, Classified As Financing Activities Dividends Paid On Ordinary Shares, Classified As Financing Activities Credit impairment of financial instruments [axis] Credit impairment of financial instruments [axis] Assetfinance September (F) Limited Assetfinance September (F) Limited [Member] Assetfinance September (F) Limited [Member] Financial Instruments [Abstract] Financial Instruments [Abstract] Financial Instruments [Abstract] 1.750% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 (XS2322315727) 1.750% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 [Member] 1.750% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 Total equity Entity's Own Equity Instruments [Member] Entity's Own Equity Instruments Equity investments – equity securities Equity securities Equity investments [member] Related party transactions [abstract] Cash flows from (used in) investing activities [abstract] Cash flows from (used in) investing activities [abstract] Fee income growth relative to balance sheet growth Fee income growth relative to balance sheet growth [Member] Fee income growth relative to balance sheet growth Number of shares awarded (in shares) Number of instruments granted in share-based payment arrangement Dividends declared before financial statements authorised for issue, per share (in dollars per share) Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share Types of financial assets [domain] Types of financial assets [domain] Société Française et Suisse Société Française et Suisse [Member] Société Française et Suisse Reconciliation of number of shares outstanding [abstract] Reconciliation of number of shares outstanding [abstract] Value at risk Value at risk Exchange differences Other comprehensive income, net of tax, exchange differences on translation of foreign operations Reconciliation of changes in fair value measurement, liabilities [abstract] Reconciliation of changes in fair value measurement, liabilities [abstract] Reconciliation of changes in other provisions [abstract] Reconciliation of changes in other provisions [abstract] Insurance revenue and expenses results Disclosure of analysis of insurance revenue and service expenses [Text Block] Disclosure of analysis of insurance revenue and service expenses Disclosure of defined benefit plans [table] Disclosure of defined benefit plans [table] Valeurs Mobilières Elysées Valeurs Mobilières Elysées [Member] Valeurs Mobilières Elysées long-dated swaptions Other Derivative Liabilities, Long-Dated Swaptions [Member] Other Derivative Liabilities, Long-Dated Swaptions [Member] Income Taxes [Abstract] Income Taxes [Abstract] Income Taxes [Abstract] Disclosure of financial assets and liabilities [Line Items] Disclosure Of Financial Assets And Liabilities [Line Items] [Line Items] for Disclosure Of Financial Assets And Liabilities [Table] HSBC Financial Advisors Singapore Pte. Ltd. HSBC Financial Advisors Singapore Pte. Ltd. [Member] HSBC Financial Advisors Singapore Pte. Ltd. Cash-generating units [axis] Cash-generating units [axis] ECL estimates, % weight assigned Inputs And Assumptions And Estimation Techniques, Expected Credit Loss, Weight Assigned To Scenarios Inputs And Assumptions And Estimation Techniques, Expected Credit Loss, Weight Assigned To Scenarios Actuarial assumptions [domain] Actuarial assumptions [domain] Award matching ratio Share-based Payment Arrangements, Award Matching Ratio Share-based Payment Arrangements, Award Matching Ratio Due not more than 1 month Not later than one month [member] Disposals, wind-downs, acquisitions and related costs Revenue From Disposals, Acquisitions, And Investment In Businesses Revenue From Disposals, Acquisitions, And Investment In Businesses HSBC Jintrust Fund Management Company Limited HSBC Jintrust Fund Management Company Limited [Member] HSBC Jintrust Fund Management Company Limited [Member] Origination of CRR Origination of CRR [Table Text Block] Origination of CRR Additions, prorated for time in employment (in shares) Number Of Other Equity Instruments Granted In Share-Based Payment Arrangement, Prorated For Time In Employment Number Of Other Equity Instruments Granted In Share-Based Payment Arrangement, Prorated For Time In Employment – past service cost and gains/(losses) from settlements Increase (decrease) in net defined benefit liability (asset) resulting from past service cost and losses (gains) arising from settlements Exchange differences in respect of cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents MP Payments Operations Limited MP Payments Operations Limited [Member] MP Payments Operations Limited Diversified Loan Fund – Syndicated Loan C S.a.r.l Diversified Loan Fund – Syndicated Loan C S.a.r.l [Member] Diversified Loan Fund – Syndicated Loan C S.a.r.l HSBC Property (UK) Limited HSBC Property (UK) Limited [Member] HSBC Property (UK) Limited [Member] Disclosure of income statement charge Disclosure Of Defined Benefit Plan Expense Recognized In Profit Or Loss Explanatory [Table Text Block] Disclosure Of Defined Benefit Plan Expense Recognized In Profit Or Loss Explanatory [Table Text Block] HSBC Branch Nominee (UK) Limited HSBC Branch Nominee (UK) Limited [Member] HSBC Branch Nominee (UK) Limited [Member] Expected credit losses as a percentage of loans and advances to customers Expected Credit Losses As Percentage Of Loans And Advances To Customers [Member] Expected Credit Losses As Percentage Of Customer Advances [Member] Present value of expected future cash flows of insurance contract liabilities and contractual service margin Disclosure of information about expected recognition of contractual service margin in profit or loss [text block] Percentage of reasonably possible increase in actuarial assumption Percentage of reasonably possible increase in actuarial assumption Debt securities in issue Debt instruments issued Disclosure of detailed information about financial instruments [table] Disclosure of detailed information about financial instruments [table] Employee Compensation And Benefits [Abstract] Employee Compensation And Benefits [Abstract] Employee Compensation And Benefits [Abstract] Disposals, wind-downs, acquisitions and related costs Operating Expenses From Disposals, Acquisitions, And Investment In Businesses Operating Expenses From Disposals, Acquisitions, And Investment In Businesses Retail Lending Retail Lending [Member] Retail Lending Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [line items] Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [line items] Average number of temporary employees Average Number Of Temporary Employees Average Number Of Temporary Employees Others Others Increase (decrease) through other movements, financial assets HSBC Pension Trust (Ireland) DAC (In Liquidation) HSBC Pension Trust (Ireland) DAC [Member] HSBC Pension Trust (Ireland) DAC [Member] Disclosure Of Critical Performance Measures And Indicators Management Uses [Table] Disclosure Of Critical Performance Measures And Indicators Management Uses [Table] Disclosure Of Critical Performance Measures And Indicators Management Uses [Table] Defined benefit and contribution healthcare plans Post-Employment Benefit Expense, Defined Benefit And Contribution Healthcare Plans Post-Employment Benefit Expense, Defined Benefit And Contribution Healthcare Plans Impairment of interest in associate Impairment of interest in associate Impairment of interests in associates Impairment Loss Recognised in Profit (Loss), Interest In Associates Impairment Loss Recognised in Profit (Loss), Interest In Associates Financial instruments including loan commitments and financial guarantees Financial Instruments Including Loan Commitments And Financial Guarantees [Member] Financial Instruments Including Loan Commitments And Financial Guarantees [Member] Entity Interactive Data Current Entity Interactive Data Current Average RoTE with CET1 underpin Return on tangible equity Performance Metric, Average Return On Equity [Member] Performance Metric, Average Return On Equity [Member] -100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Parallel Shift In Yield Curves Other balance sheet assets Other Balance Sheet Assets [Member] Other Balance Sheet Assets [Member] 2023-2025 LTI 2023-2025 LTI [Member] 2023-2025 LTI Profit before tax ($bn) Measure Of Profit (Loss) Before Tax [Member] Measure Of Profit (Loss) Before Tax [Member] Contributions paid to defined benefit plans Payments Of Contributions To 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comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets HSBC European Senior Direct Lending 2023 HoldCo S.à r.l. HSBC European Senior Direct Lending 2023 HoldCo S.à r.l. [Member] HSBC European Senior Direct Lending 2023 HoldCo S.à r.l. 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HQLAX S.à r.l. [Member] HQLAX S.à r.l. 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[Member] Impact of differently taxed overseas profits in overseas locations Tax effect of foreign tax rates HSBC Overseas Holdings (UK) Limited HSBC Overseas Holdings (UK) Limited [Member] HSBC Overseas Holdings (UK) Limited [Member] – before income taxes Other comprehensive income, before tax, change in fair value of financial liability attributable to change in credit risk of liability Banco Nominees Limited Banco Nominees Limited [Member] Banco Nominees Limited [Member] Financial assets held to meet liabilities under insurance and investment contracts Financial Assets Held To Meet Liabilities Under Insurance And Investment Contracts [Member] Financial Assets Held To Meet Liabilities Under Insurance And Investment Contracts [Member] Mainland China State Taxation Administration, China [Member] State Taxation Administration, China HSBC Bank (Singapore) Limited HSBC Bank (Singapore) Limited [Member] HSBC Bank (Singapore) Limited [Member] Purchases Purchases, fair value measurement, 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(decrease) through treasury share transactions, equity HSBC Bank Malta p.l.c. HSBC Bank Malta p.l.c. [Member] HSBC Bank Malta p.l.c. 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(In Liquidation) HSBC Pensiones, S.A. (In Liquidation) [Member] HSBC Pensiones, S.A. 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HSBC Securities Services (Ireland) DAC HSBC Securities Services (Ireland) DAC [Member] HSBC Securities Services (Ireland) DAC [Member] Structured notes Structured Notes [Member] Structured Notes -100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Shift In Credit Spreads Non-adjusting events after reporting period [domain] Non-adjusting events after reporting period [domain] Operating income growth rate Operating Income Growth Rate [Member] Operating Income Growth Rate Changes in reserve of cash flow hedges, continuing hedges [Roll Forward] Changes In Reserve Of Cash Flow Hedges, Continuing Hedges [Roll Forward] Changes In Reserve Of Cash Flow Hedges, Continuing 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of subsidiaries or other businesses, classified as investing activities HSBC Global Asset Management (Malta) Limited HSBC Global Asset Management (México), S.A. de C.V., Sociedad Operadora de Fondos de Inversión, Grupo Financiero HSBC [Member] HSBC Global Asset Management (México), S.A. de C.V., Sociedad Operadora de Fondos de Inversión, Grupo Financiero HSBC [Member] Corporate Centre Corporate Centre, Segment [Member] Corporate Centre [Member] Central bank policy rate (annual average, %) Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Central Bank Policy Rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Central Bank Policy Rate – adjustments in respect of prior periods Tax rate effect of adjustments for current tax of prior periods Change in loans and advances to banks and customers Adjustments for decrease (increase) in loans and advances 7.625% Subordinated Notes due 2032 (US404280AF65) 7.625% 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2027 (US404280CM98) 1.589% Fixed/Floating Rate Senior Unsecured Notes Due 2027 [Member] 1.589% Fixed/Floating Rate Senior Unsecured Notes Due 2027 Hang Seng Bullion Company Limited Hang Seng Bullion Company Limited [Member] Hang Seng Bullion Company Limited [Member] HSBC Custody Services (Guernsey) Limited HSBC Custody Services (Guernsey) Limited [Member] HSBC Custody Services (Guernsey) Limited [Member] Classes of financial instruments [domain] Classes of financial instruments [domain] Change in bps due to reasonably possible unfavourable changes in key assumptions Increase (Decrease) In Basis Points Due To Reasonably Possible Unfavourable Changes In Key Assumptions Increase (Decrease) In Basis Points Due To Reasonably Possible Unfavourable Changes In Key Assumptions – insurance acquisition cash flows Estimates of present value of insurance acquisition cash flows [member] Award price (in GBP per share) Weighted average exercise price of other equity instruments outstanding in 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HSBC Markets (USA) Inc. [Member] HSBC Markets (USA) Inc. [Member] HSBC Global Services Limited HSBC Global Services Limited [Member] HSBC Global Services Limited [Member] HSBC Americas Corporation (Delaware) HSBC Americas Corporation (Delaware) [Member] HSBC Americas Corporation (Delaware) [Member] Banco Nominees 2 (Guernsey) Limited Banco Nominees 2 (Guernsey) Limited [Member] Banco Nominees 2 (Guernsey) Limited [Member] – treasury and other eligible bills Short-term investments, classified as cash equivalents Disclosure of information about consolidated structured entities [line items] Disclosure of information about consolidated structured entities [line items] Repayment of capital from subsidiaries Cash Receipts From Repayment Of Capital From Subsidiaries, Classified As Investing Activities Cash Receipts From Repayment Of Capital From Subsidiaries, Classified As Investing Activities Financial assets designated and otherwise mandatorily measured at fair value through profit or loss Financial assets with HSBC undertakings designated and otherwise mandatorily measured at fair value Financial assets at fair value through profit or loss, mandatorily measured at fair value, other than those classified as held for trading Carrying amount Carrying Amount Of Cash-generating Unit Carrying Amount Of Cash-generating Unit Of which exercisable (in shares) Number of share options exercisable in share-based payment arrangement Performance percentage Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Performance Percentage Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Performance Percentage Changes to models used for ECL calculation Increase (decrease) through changes in models or risk parameters, financial assets – POCI Financial instruments purchased or originated credit-impaired [member] - other Other Portfolio Liabilities, Miscellaneous [Member] Other Portfolio Liabilities, Miscellaneous [Member] Award vesting period Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period2 Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period2 New business for insurance contracts New business for insurance contracts [Member] New business for insurance contracts AI Nominees (UK) One Limited AI Nominees (UK) One Limited [Member] AI Nominees (UK) One Limited 20-year discount rate (%) Twenty Year Discount Rate [Member] Twenty Year Discount Rate Market price at vest (in BP per share) Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement Derivative assets with related party Derivative Financial Assets, Related Party Transactions Derivative Financial Assets, Related Party Transactions Net cash from financing activities Cash flows from (used in) financing activities Deferred shares Deferred Shares [Member] Deferred Shares [Member] Restructuring and other related costs Provisions (Reversals) For Cost Of restructuring Provisions (Reversals) For Cost Of restructuring Counterparties [axis] Counterparties [axis] Preference shares Preference shares [member] Inflation rate (RPI) Actuarial Assumption Of Expected Rates Of Inflation, Retail Price Index Actuarial Assumption Of Expected Rates Of Inflation, Retail Price Index Impairment test results Disclosure Of Detailed Information About Impairment Loss [Table Text Block] Disclosure Of Detailed Information About Impairment Loss Asia Asia [Member] HSBC Management (Guernsey) Limited HSBC Management (Guernsey) Limited [Member] HSBC Management (Guernsey) Limited [Member] Fair value of plan assets Plan assets, at fair value HSBC Latin America B.V. HSBC Latin America B.V. [Member] HSBC Latin America B.V. [Member] HLF HLF [Member] HLF Gross total fair values of derivative assets Gross Derivative Financial Assets, Including Not Subject to Enforceable Master Netting Arrangements Gross Financial Assets Subject To Offsetting, Enforceable Master Netting Arrangements Or Similar Agreements And Financial Assets Not Subject to Enforceable Master Netting Arrangements Statement of changes in equity [table] Statement of changes in equity [table] Actuarial assumptions [axis] Actuarial assumptions [axis] Assets and liabilities related to insurance contracts Assets And Liabilities Related To Insurance Contracts [Member] Assets And Liabilities Related To Insurance Contracts [Member] Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Performance Target Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Performance Target Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Performance Target B&Q Financial Services Limited B&Q Financial Services Limited [Member] B&Q Financial Services Limited [Member] Total non-executive directors Non-Executive Directors [Member] Non-Executive Directors [Member] HSBC Services (France) HSBC Services (France) [Member] HSBC Services (France) [Member] Equity volatility Historical volatility for shares, measurement input [member] Unsubordinated accounts receivable Unsubordinated Accounts Receivable [Member] Unsubordinated Accounts Receivable [Member] 5.719% Fixed Rate/Floating Rate Senior Unsecured Notes due 2035 (US404280EE54) 5.719% Fixed Rate/Floating Rate Senior Unsecured Notes due 2035 [Member] 5.719% Fixed Rate/Floating Rate Senior Unsecured Notes due 2035 Classes of assets [domain] Classes of assets [domain] Types of hedges [domain] Types of hedges [domain] HSBC Electronic Data Processing (Malaysia) Sdn Bhd HSBC Electronic Data Processing (Malaysia) Sdn Bhd [Member] HSBC Electronic Data Processing (Malaysia) Sdn Bhd [Domain] HSBC Investment Funds (Luxembourg) SA HSBC Investment Funds (Luxembourg) SA [Member] HSBC Investment Funds (Luxembourg) SA [Member] Fair value of derivative liabilities, highest balance during the year Derivative Liabilities, At Fair Value, Related Party, Highest Balance During The Year Derivative Liabilities, At Fair Value, Related Party, Highest Balance During The Year Minimum Bottom of range Bottom of range [member] Income Tax Authority, Name [Axis] Income Tax Authority, Name1 [Axis] Income Tax Authority, Name1 [Axis] -100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Parallel Shift In Yield Curves Loans and advances to banks and customers Corporate And Consumer Loans [Member] Corporate And Consumer Loans [Member] Categories of related parties [axis] Categories of related parties [axis] Other non-financial assets Description of accounting policy for impairment of non-financial assets [text block] Performance Categories And Objectives [Domain] Performance Categories And Objectives [Domain] [Domain] for Performance Categories And Objectives [Axis] +100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Parallel Shift In Yield Curves Capco/Cove, Inc. Capco/Cove, Inc. [Member] Capco/Cove, Inc. [Member] Hongkong and Shanghai Banking Corporation Hongkong And Shanghai Banking Corporation [Member] Hongkong And Shanghai Banking Corporation HSBC PB Corporate Services 1 Limited HSBC PB Corporate Services 1 Limited [Member] HSBC PB Corporate Services 1 Limited [Member] Profit for the year – profit for the year Profit for the year Profit (loss) Disclosure of financial assets and off-balance sheet commitments Disclosure of Financial Assets And Off-balance Sheet Commitments [Table Text Block] Disclosure of Financial Assets And Off-balance Sheet Commitments [Table Text Block] Cash flow hedges Other comprehensive income, net of tax, cash flow hedges Total changes in the consolidated income statement and statement of comprehensive income Increase (decrease) in insurance contracts liability (asset) Goodwill Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant [member] Transfer of agreed liabilities Settlement Through Transfer Of Agreed Liabilities Settlement Through Transfer Of Agreed Liabilities Balance Sheet Components [Domain] Balance Sheet Components [Domain] [Domain] for Balance Sheet Components [Axis] Tekoma Energy Group Holdings Limited Tekoma Energy Group Holdings Limited [Member] Tekoma Energy Group Holdings Limited Fair value (gains)/losses reclassified from the cash flow hedge reserve to the income statement in respect of: Fair Value (Gains) Losses Reclassified from Cash Flow Hedge Reserves to Income Statement [Abstract] Fair Value (Gains) Losses Reclassified from Cash Flow Hedge Reserves to Income Statement [Abstract] Financial guarantees Financial Guarantee And Similar Contracts [Member] Financial Guarantee And Similar Contracts [Member] 10% decrease in growth assets Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Equity Prices Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Equity Prices Total related party assets at 31 Dec Assets, Highest Amount During The Year Assets, Highest Amount During The Year UK Her Majesty's Revenue and Customs (HMRC)1 [Member] Her Majesty's Revenue and Customs (HMRC)1 [Member] Subordinated liabilities Subordinated Liabilities, Highest Amount During The Year Subordinated Liabilities, Highest Amount During The Year Hedged items that have affected profit or loss Reclassification Adjustments On Cash Flow Hedges For Which Hedged Item Affected Profit Or Loss, Before Tax Reclassification Adjustments On Cash Flow Hedges For Which Hedged Item Affected Profit Or Loss, Before Tax Document Registration Statement Document Registration Statement Price – Net asset value Net asset value [member] Directors' remuneration expense Directors' remuneration expense Directors' remuneration expense Segmental analysis Disclosure of entity's operating segments [text block] Depreciation of right-of-use assets Depreciation, right-of-use assets HSBC (Singapore) Nominees Pte Ltd HSBC (Singapore) Nominees Pte Ltd [Member] HSBC (Singapore) Nominees Pte Ltd [Member] Amounts due to associates Total for all associates [member] Total Total Insurance Result, Including Amounts Earned By entities Held-for-Sale [Member] Total Insurance Result, Including Amounts Earned By entities Held-for-Sale – forward asset purchases and forward deposits placed Forward Asset Purchases And Forward Deposits Placed [Member] Forward Asset Purchases and Forward Deposits Placed [Member] Probability of default increase Probability Of Default Increase Probability Of Default Increase Changes that relate to future services Increase (decrease) through changes that relate to future service, insurance contracts liability (asset) [abstract] – financial – non-bank financial institutions Finance Loans Sector [Member] Finance Loans Sector [Member] Disclosure of carrying amount of interests in associates and joint ventures Disclosure of Interests in Associates and Joint Arrangements [Text Block] Disclosure of Interests in Associates and Joint Arrangements [Text Block] Korea Nova Solar 1 Inc Korea Nova Solar 1 Inc [Member] Korea Nova Solar 1 Inc Disclosure of contingent liabilities [table] Disclosure of contingent liabilities [table] Present value of defined benefit obligations Present value of defined benefit obligation [member] Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [table] Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [table] Interest paid Interest Paid1 Interest Paid1 Assets and liabilities not classified as held for sale Assets and liabilities not classified as held for sale [member] Analysis of income and expense [abstract] Analysis of income and expense [abstract] – foreign exchange losses reclassified to the income statement on disposal or dilution of a foreign operation – foreign exchange reclassified to income statement on disposal or dilution of a foreign operation Reclassification adjustments on exchange differences on translation of foreign operations, net of tax Canada Square Nominees (UK) Limited Canada Square Nominees (UK) Limited [Member] Canada Square Nominees (UK) Limited [Member] Disclosure of sensitivity analysis for actuarial assumptions Disclosure of sensitivity analysis for actuarial assumptions [text block] Deposits by banks Deposits From Banks, Undiscounted Cash Flows Deposits From Banks, Undiscounted Cash Flows Business Contact Business Contact [Member] Pound sterling-denominated structural foreign exchange United Kingdom, Pounds Liabilities Liabilities [abstract] Bud Financial Limited Bud Financial Limited [Member] Bud Financial Limited [Member] Contracts under the modified retros- pective approach Contractual service margin related to contracts that existed at transition date to which modified retrospective approach has been applied [member] Share price on date of grant (in gbp per share) Closing share price (in GBP per share) Share Price1 Share Price1 Represented by [Domain] Represented by [Domain] Represented by [Domain] Reclassified to held for sale and additions Increase (Decrease) Through Classified As Held For Sale And Additions, Intangible Assets And Goodwill Increase (Decrease) Through Classified As Held For Sale And Additions, Intangible Assets And Goodwill Midland Bank (Branch Nominees) Limited Midland Bank (Branch Nominees) Limited [Member] Midland Bank (Branch Nominees) Limited [Member] HSBC (Guernsey) GP PCC Limited HSBC (Guernsey) GP PCC Limited [Member] HSBC (Guernsey) GP PCC Limited [Member] Value in use Value In Use Of Cash-generating Unit Value In Use Of Cash-generating Unit Percentage delivery deferred Directors Remuneration Expense, Annual Incentive, Percentage Delivery Deferred Directors Remuneration Expense, Annual Incentive, Percentage Delivery Deferred Carrying amount Carrying amount [member] $1,350m issued at 6.875% $1,350m 6.875% Perpetual Subordinated Contingent Convertible Securities [Member] $1,350m 6.875% Perpetual Subordinated Contingent Convertible Securities Non-taxable benefits Directors Remuneration Expense, Non-Taxable Benefits Directors Remuneration Expense, Non-Taxable Benefits Expired during the year (in GBP per share) Weighted average exercise price of share options expired in share-based payment arrangement Carrying amount, liabilities Hedged item, liabilities Unobservable inputs [domain] Unobservable inputs [domain] Short-term employee benefits Key management personnel compensation, short-term employee benefits Insurance contract liabilities Insurance contracts issued that are liabilities Security Exchange Name Security Exchange Name Insurance contracts by components [axis] Insurance contracts by components [axis] Percentage delivered immediately Directors Remuneration Expense, Annual Incentive, Percentage Delivered Immediately Directors Remuneration Expense, Annual Incentive, Percentage Delivered Immediately HSBC Private Markets GP S.à r.l. HSBC Private Markets GP S.à r.l. [Member] HSBC Private Markets GP S.à r.l. 5.240% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (US404280EW52) 5.240% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 [Member] 5.240% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 Fair value of equity instruments held at year end Investments in equity instruments designated at fair value through other comprehensive income 2.871% Fixed Rate/Floating Rate Senior Unsecured Notes due 2032 (US404280CY37) 2.871% Fixed Rate/Floating Rate Senior Unsecured Notes due 2032 [Member] 2.871% Fixed Rate/Floating Rate Senior Unsecured Notes due 2032 Cash collateral Cash collateral pledged subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities 6.8% Subordinated Notes Due 2038 (US404280DN62) 6.8% Subordinated Notes Due 2038 [Member] 6.8% Subordinated Notes Due 2038 Pay Actuarial assumption of expected rates of salary increases [member] Other governments Other Government Securities [Member] Other Government Securities [Member] Tier 1 capital Tier One Capital Tier One Capital Settlement accounts and items in course of transmission to other banks Settlement Account Liabilities Settlement Account Liabilities Net assets/(liabilities) classified as held for sale Assets (liabilities) Investments required by central institutions Investments Required By Central Institutions [Member] Investments Required By Central Institutions [Member] Total Total for all unconsolidated structured entities [member] Insurance Contracts, Life Other Contracts, Including Held-for-Sale Amounts Insurance Contracts, Life Other Contracts, Including Held-for-Sale Amounts [Member] Insurance Contracts, Life Other Contracts, Including Held-for-Sale Amounts Actual Loan To Value Ratio Actual Loan To Value Ratio Actual Loan To Value Ratio Hong Kong currency notes in circulation Currency Notes In Circulation Currency Notes In Circulation Charterhouse Management Services Limited Charterhouse Management Services Limited [Member] Charterhouse Management Services Limited [Member] – personal Balances on demand deposits from customers Disclosure of detailed information about accruals, deferred income and other liabilities Disclosure Of Accrued Expenses And Other Liabilities [Table Text Block] Disclosure Of Accrued Expenses And Other Liabilities [Table Text Block] Securitisations Securitisation vehicles [member] 4.755% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280DF39) 4.755% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 [Member] 4.755% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 Disclosure of fair value of plan assets [table] Disclosure of fair value of plan assets [table] HSBC Ventures USA Inc. HSBC Ventures USA Inc. [Member] HSBC Ventures USA Inc. [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Hang Seng Bank (Trustee) Limited Hang Seng Bank (Trustee) Limited [Member] Hang Seng Bank (Trustee) Limited [Member] Honey Green Enterprises Ltd. Honey Green Enterprises Ltd. [Member] Honey Green Enterprises Ltd. [Member] Long-term asset growth rate Long-Term Asset Growth Rate [Member] Long-Term Asset Growth Rate [Member] – current service cost Increase in net defined benefit liability (asset) resulting from current service cost Insurance liability future cash flows Remaining contractual undiscounted cash outflows (inflows) that arise from contracts within scope of IFRS 17 that are liabilities Other equity instruments interest rate Equity Instruments, Interest Rate Equity Instruments, Interest Rate Lion International Corporate Services Limited Lion International Corporate Services Limited [Member] Lion International Corporate Services Limited [Member] Other Other Unconsolidated Structured Entities [Member] Other Unconsolidated Structured Entities [Member] Financial investments – at amortised cost Financial assets at amortised cost, class [member] Total operating expenses Total operating expenses Operating expenses Operating expense Disclosure of information about maturity profile of defined benefit obligation Disclosure of information about maturity profile of defined benefit obligation [text block] Geraldine Buckingham Non-Executive Director, Geraldine Buckingham [Member] Non-Executive Director, Geraldine Buckingham Vesting1 [Axis] Vesting Tranches [Axis] Vesting [Axis] Exercised during the year (in shares) Number of share options exercised in share-based payment arrangement 10% appreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On CSM, Foreign Currency Translation – personal – personal Personal Loans Sector [Member] Personal Loans Sector [Member] Insurance contract assets Insurance contracts issued that are assets HSBC Services USA Inc. HSBC Services USA Inc. [Member] HSBC Services USA Inc. [Member] – impairment of investment in BoCom Tax Rate Effect Of Impairment Of Interest In Associates Tax Rate Effect Of Impairment Of Interest In Associates Investments in subsidiaries Investments in subsidiaries Investments in subsidiaries reported in separate financial statements Fair value of trading liabilities Derivative financial liabilities held for trading 2.206% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 (US404280CV97) 2.206% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 [Member] 2.206% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 Assessment (%) Assessment Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives Assessment Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] $1,500m issued at 6.950% $1,500m 6.950% Perpetual Subordinated Contingent Convertible Securities [Member] $1,500m 6.950% Perpetual Subordinated Contingent Convertible Securities Share of other comprehensive income/(expense) of associates and joint ventures Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax Owned property, plant and equipment Property, plant and equipment Other equity instruments Other equity interest – 51% to 70% LTV 51 To 70 Percent [Member] LTV 51 To 60 Percent [Member] Wayfoong Nominees Limited Wayfoong Nominees Limited [Member] Wayfoong Nominees Limited [Member] Adjustments to liabilities for incurred claims Adjustments to liabilities for incurred claims Increase (decrease) through changes that relate to past service, insurance contracts liability (asset) 3.973% Fixed Rate/Floating Rate Senior Unsecured Notes due 2030 (US404280CC17) 3.973% Fixed/Floating Rate Senior Unsecured Notes Due 2030 [Member] 3.973% Fixed/Floating Rate Senior Unsecured Notes Due 2030 5.133% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 (US404280FG93) 5.133% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 [Member] 5.133% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 -100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Shift In Credit Spreads Disclosure of dividends to shareholders Disclosure Of Dividends To Shareholders [Table Text Block] Disclosure of Dividends To Shareholders [Table Text Block] Derivatives Derivative financial liabilities, undiscounted cash flows Liabilities of disposal groups held for sale Liabilities Of Disposal Groups Held For Sale [Member] Liabilities Of Disposal Groups Held For Sale [Member] Car and driver (taxable) Directors Remuneration Expense, Benefits, Car And Driver Directors Remuneration Expense, Benefits, Car And Driver Weighted average duration of defined benefit obligation Weighted average duration of defined benefit obligation – financial and other guarantees Financial And Other Guarantee Contracts [Member] Financial And Other Guarantee Contracts [Member] Banco HSBC S.A. Banco HSBC S.A. [Member] Banco HSBC S.A. Other assets – other assets Other assets and investment properties Other assets Non-financial assets Other non-financial assets Items that will not be reclassified subsequently to profit or loss: Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] Quoted market price in active market Level 1 Level 1 of fair value hierarchy [member] Plan Name1 [Domain] Plan Name1 [Domain] [Domain] for Plan Name1 [Axis] Granted during the year (in shares) Number of share options granted in share-based payment arrangement Non-financial liabilities Other non-financial liabilities Bonds Bonds, Assets [Member] Bonds, Assets Net investment return Disclosure Of Analysis Of Insurance Net Investment Return [Table Text Block] Disclosure Of Analysis Of Insurance Net Investment Return HSBC International Finance Corporation (Delaware) HSBC International Finance Corporation (Delaware) [Member] HSBC International Finance Corporation (Delaware) [Member] Bonds and medium-term notes Bonds And Medium Term Notes [Member] Bonds And Medium Term Notes [Member] Discount rate Discount rate, measurement input [member] ECL Economic Scenario [Domain] ECL Economic Scenario [Domain] ECL Economic Scenario [Domain] Disclosure of information about expected recognition of contractual service margin in profit or loss [table] Disclosure of information about expected recognition of contractual service margin in profit or loss [table] Operating income ratio Description Of Operating Income Ratio Used In Current Estimate Of Value In Use Description Of Operating Income Ratio Used In Current Estimate Of Value In Use Dividends paid to shareholders of the parent company and non-controlling interests Dividends paid, classified as financing activities Eton Corporate Services Limited Eton Corporate Services Limited [Member] Eton Corporate Services Limited [Member] Changes in estimates that adjust the contractual service margin Increase (decrease) through changes in estimates that adjust contractual service margin, insurance contracts liability (asset) Release period Share-Based Compensation Arrangement By Share-Based Payment Award, Release Period Share-Based Compensation Arrangement By Share-Based Payment Award, Release Period Change in fair value Gain (loss) on change in fair value of hedged item used as basis for recognising hedge ineffectiveness Trading liabilities Financial liabilities at fair value through profit or loss that meet definition of held for trading Reconciliation of changes in intangible assets and goodwill [abstract] Reconciliation of changes in intangible assets and goodwill [abstract] Provisions including pensions Adjustments for provisions Insurance revenue Increase (decrease) through insurance revenue, insurance contracts liability (asset) [abstract] RoTE with CET1 capital ratio underpin RoTE with CET1 capital ratio underpin Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Average Return On Equity Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Average Return On Equity Subordinated liabilities Subordinated Liabilities [Member] Subordinated Liabilities [Member] Mortality and/or morbidity rates Measurement Input, Mortality And Morbidity Rate [Member] Measurement Input, Mortality And Morbidity Rate French life insurance business French Life Insurance Business [Member] French Life Insurance Business Non-trading portfolios Non-trading Portfolios [Member] Non-trading Portfolios [Member] HSIL Investments Limited HSIL Investments Limited [Member] HSIL Investments Limited [Member] – financial assets designated and otherwise mandatorily measured at fair value through profit or loss Financial assets designated and otherwise mandatorily measured at fair value through profit or loss Financial Assets At Fair Value Through Profit Or Loss, Excluding Those Classified As Held For Trading Financial Assets At Fair Value Through Profit Or Loss, Excluding Those Classified As Held For Trading Profitable contracts issued Increase (decrease) through effects of contracts acquired in period, insurance contracts liability (asset) Post-vesting retention period of granted awards Key Management Personnel Compensation, Shareholding Guidelines, Post Vesting Retention Period Key Management Personnel Compensation, Shareholding Guidelines, Post Vesting Retention Period – fines and provisions for legal settlements Tax Rate Effect Of Fines And Provisions For Regulatory Settlements Tax Rate Effect Of Fines And Provisions For Regulatory Settlements Assetfinance March (B) Limited Assetfinance March (B) Limited [Member] Assetfinance March (B) Limited [Member] HSBC Insurance Brokers Greater China Limited HSBC Insurance Brokers Greater China Limited [Member] HSBC Insurance Brokers Greater China Limited Disclosure of shareholdings, options and other securities of key management personnel Disclosure Of Stock Options And Shares Held By Entity By Subsidiary Or Associates [Table Text Block] Disclosure Of Stock Options And Shares Held By Entity By Subsidiary Or Associates Loans & advances to customer growth rate Description Of Loans And Advances To Customer Growth Rate Used In Current Estimate Of Value In Use Description Of Loans And Advances To Customer Growth Rate Used In Current Estimate Of Value In Use Lion Management (Hong Kong) Limited Lion Management (Hong Kong) Limited [Member] Lion Management (Hong Kong) Limited [Member] HSBC Client Nominee (Jersey) Limited HSBC Client Nominee (Jersey) Limited [Member] HSBC Client Nominee (Jersey) Limited [Member] Deferred tax liability (asset) Deferred tax liability (asset) beginning balance Deferred tax liability (asset) ending balance Deferred tax liability (asset) Foreign exchange and other Gains (losses) recognised in other comprehensive income on exchange differences, fair value measurement, assets Financial liabilities designated at fair value Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently Other non-cash items included in profit before tax – other non-cash items included in profit before tax Other adjustments for non-cash items HSBC Trustee (C.I.) Limited HSBC Trustee (C.I.) Limited [Member] HSBC Trustee (C.I.) Limited [Member] Dividends received from BoCom Dividends received Dividends received Net fee income Net fee (expense)/income Net fee and commission income Fee and commission income (expense) Expected dividend yield (in gbp per share) Expected Dividend, Other Equity Instruments Granted Expected Dividend, Other Equity Instruments Granted Gain (loss) on hedge ineffectiveness recognised in profit or loss Gain (loss) on hedge ineffectiveness recognised in profit or loss Schedule of tax reconciliation Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates And Average Effective Tax Rate [Table Text Block] Disclosure Of Reconciliation Of Accounting Profit Multiplied By Applicable Tax Rates And Average Effective Tax Rate [Table Text Block] Regulatory excellence, wealth acceleration and strategic investments, Group technology strategy Measure Of Personal Objectives [Member] Measure Of Personal Objectives [Member] Continuing and discontinued operations [axis] 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other comprehensive income [axis] Investments in equity instruments designated at fair value through other comprehensive income [axis] HSBC UK Bank plc HSBC UK Bank plc [Member] HSBC UK Bank plc [Member] Unconsolidated structured entities [domain] Unconsolidated structured entities [domain] $2,450m issued at 6.375% $2,450m 6.375% Perpetual Subordinated Contingent Convertible Securities [Member] $2,450m 6.375% Perpetual Subordinated Contingent Convertible Securities [Member] Maximum exposure Maximum exposure to credit risk Disclosure of performance achieved by executive Directors Disclosure Of Critical Performance Measures And Indicators That Management Uses To Evaluate Entitys Performance Against Stated Objectives Explanatory [Table Text Block] Disclosure Of Critical Performance Measures And Indicators That Management Uses To Evaluate Entitys Performance Against Stated Objectives Explanatory Significant unobservable input, assets, percentage Significant unobservable input, assets Accumulated fair value hedge adjustments included in carrying amount, assets Accumulated fair value hedge adjustment on hedged item included in carrying amount, assets Incurred claims and other insurance service expenses Incurred claims and other insurance service expenses Increase (decrease) through incurred claims and other incurred insurance service expenses, insurance contracts liability (asset) – 71% to 80% LTV 71 To 80 Percent [Member] LTV 71 To 80 Percent [Member] Liabilities to customers under investment contracts Investment Contract Liabilities [Member] Investment Contract Liabilities [Member] 7.390% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280DR76) 7.390% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 [Member] 7.390% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 – net income from assets and liabilities of insurance businesses, including related derivatives, measured at fair value through profit or loss Net Income From Assets And 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Certificates Of Indebtedness Expected credit losses as a percentage of customer advances in the long term Description Of Loan Impairment Charge As Percentage Of Customer Advances In Future Estimate Of Value In Use Description Of Loan Impairment Charge As Percentage Of Customer Advances In Future Estimate Of Value In Use Going concern Disclosure of going concern [text block] Interest paid, classified as operating activities Interest paid, classified as operating activities – impact of changes in tax rates Tax effect from change in tax rate Geographical [Domain] Geographical [Domain] 100bps decrease in the discount rate - single variable 100 bps Decrease In Discount Rate [Member] 100 bps Decrease In Discount Rate Trading assets Trading assets Financial assets at fair value through profit or loss, classified as held for trading Net defined benefit liability (asset) [domain] Net defined benefit liability (asset) [domain] Restricted cash and cash equivalents Restricted cash and cash equivalents – reverse repos Reverse Repurchase Agreement [Member] Reverse Repurchase Agreement [Member] Projected unit credit method Projected Unit Credit Method [Member] Projected Unit Credit Method Insurance contracts by components [domain] Insurance contracts by components [domain] Contingent convertible securities Contingent Convertible Securities [Member] Contingent Convertible Securities [Member] Accumulated fair value hedge adjustments included in carrying amount, liabilities Accumulated fair value hedge adjustment on hedged item included in carrying amount, liabilities Dowsure Inc. Dowsure Inc. [Member] Dowsure Inc. Household International Europe Limited (In Liquidation) Household International Europe Limited (In Liquidation) [Member] Household International Europe Limited (In Liquidation) Shares outstanding (in shares) Entity Common Stock, Shares Outstanding +100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Shift In Credit Spreads 6.5% Subordinated Notes 2036 (US404280AG49) 6.5% Subordinated Notes Due May 2036 [Member] 6.5% Subordinated Notes Due May 2036 [Member] Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Disclosure of initial application of standards or interpretations [line items] Disclosure of initial application of standards or interpretations [line items] – share for the year Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss, Current Year Share, Net of Tax Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss, Current Year Share, Net of Tax – net income/(losses) from financial instruments held for trading or managed on a fair value basis Net Income From Financial Instruments Held For Trading Or Managed On A Fair Value Basis [Member] Net Income From Financial Instruments Held For Trading Or Managed On A Fair Value Basis [Member] Financial assets measured at fair value through other comprehensive income, category Debt instruments measured at fair value through other comprehensive income Financial assets measured at fair value through other comprehensive income, category [member] Changes in fair value of designated debt and related derivatives Gains (Losses) On Change In Fair Value Of Long-Term Debt And Related Derivatives Gains (Losses) On Change In Fair Value Of Long-Term Debt And Related Derivatives HSBC Bank Australia Limited HSBC Bank Australia Limited [Member] HSBC Bank Australia Limited [Member] EUR 1,250m Subordinated Capital Securities EUR 1,250m Subordinated Capital Securities [Member] EUR 1,250m Subordinated Capital Securities [Member] Insurance Risk Insurance risk [member] HSBC Institutional Trust Services (Mauritius) Limited HSBC Institutional Trust Services (Mauritius) Limited [Member] HSBC Institutional Trust Services (Mauritius) Limited [Member] Liabilities of disposal groups held for sale Financial Liabilities Included In Disposal Groups Classified As Held For Sale Financial Liabilities Included In Disposal Groups Classified As Held For Sale Percentage of credit risk exposure being neither past due nor impaired Percentage of insurance contracts assessed as satisfactory or higher that is neither past due nor impaired Exposure To Credit Risk On Reinsurers' Share Of Liabilities Under Insurance Contracts, Neither Past Due Nor Impaired, Percentage Exposure To Credit Risk On Reinsurers' Share Of Liabilities Under Insurance Contracts, Neither Past Due Nor Impaired, Percentage Other changes in fair value Long-term Debt Issued And Related Derivatives, Other Changes [Member] Long-term Debt Issued And Related Derivatives, Other Changes [Member] Cash collateral Cash collateral received subject to enforceable master netting arrangement or similar agreement not set off against financial assets Disclosure of transactions and balances during the year with associates and joint ventures Disclosure of transactions between related parties [text block] Total liabilities and equity Equity and liabilities US UNITED STATES Exchange and other movements Increase (decrease) through net exchange differences, other provisions Reported RoTE Measure Of Return On Tangible Equity [Member] Measure Of Return On Tangible Equity Business combinations [domain] Business combinations [domain] 28 Feb 22 28 Feb 22 [Member] 28 Feb 22 Impairment of amortised cost and FVOCI financial assets Description of accounting policy for impairment of financial assets [text block] HSBC Asset Management (Japan) Limited HSBC Asset Management (Japan) Limited [Member] HSBC Asset Management (Japan) Limited Shares delivered to executive Directors as part of the FPA Fixed Pay Allowance [Member] Fixed Pay Allowance [Member] 8.113% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2033 (US404280DS59) 8.113% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2033 [Member] 8.113% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2033 Global custody Global Custody Fee And Commission Income Global Custody Fee And Commission Income Foreign exchange and others Increase (decrease) through foreign exchange and other movements, financial assets Disclosure of range of exercise prices of outstanding share options Disclosure of range of exercise prices of outstanding share options [text block] Interest rate volatility Interest rate, measurement input [member] Herald Fund SPC Herald Fund SPC [Member] Herald Fund SPC Opening assets Closing assets Insurance contract assets (Note 4) Insurance contracts that are assets Joint ventures [domain] Joint ventures [domain] Disclosure of other equity instruments Disclosure Of Other Equity Instruments [Table Text Block] [Table Text Block] for Disclosure Of Other Equity Instruments [Table] Interests in associates and joint arrangements Description of accounting policy for investment in associates and joint ventures [text block] Customer accounts Deposits From Customers, Undiscounted Cash Flows Deposits From Customers, Undiscounted Cash Flows Long-term incentive awards LTI deferred shares Long-Term Incentive Awards [Member] Long-Term Incentive Awards [Member] Foncière Elysées Foncière Elysées [Member] Foncière Elysées City Area Code City Area Code Contingent liabilities Description of accounting policy for contingent liabilities and contingent assets [text block] Disclosure of net defined benefit liability (asset) [table] Disclosure of net defined benefit liability (asset) [table] $ United States of America, Dollars Fair values of financial instruments carried at fair value Fair values of financial instruments not carried at fair value Disclosure of fair value of financial instruments [text block] Disclosure of directors' interest in share options Disclosure Of Director's Interests In Shares [Table Text Block] Disclosure Of Director's Interests In Shares [Table Text Block] $3,000m issued at 6.000% $3,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] $3,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] Provisions (excluding contractual commitments) Provisions, Excluding Contractual Commitments [Member] Provisions, Excluding Contractual Commitments [Member] Disclosure of financial assets that are either past due or impaired [line items] Disclosure of financial assets that are either past due or impaired [line items] HSBC Bank USA, National Association HSBC Bank USA, National Association [Member] HSBC Bank USA, National Association [Member] Loans and advances to HSBC undertakings Loans to corporate entities [member] Categories of financial liabilities [domain] Categories of financial liabilities [domain] Other movements Increase (decrease) through other changes, equity Off-balance sheet commitments Off-balance Sheet Commitments Off-balance Sheet Commitments Related party transactions Disclosure of related party [text block] COIF Nominees (UK) Two Limited COIF Nominees (UK) Two Limited [Member] COIF Nominees (UK) Two Limited – corporate and commercial Balances On Corporate And Commercial Deposits From Customers Balances On Corporate And Commercial Deposits From Customers Black employees represented in leadership Measure Of Black Employees Representation In Leadership [Member] Measure Of Black Employees Representation In Leadership Net change in fair value Gains (losses) on financial assets measured at fair value through other comprehensive income, net of tax Charterhouse Pensions Limited Charterhouse Pensions Limited [Member] Charterhouse Pensions Limited [Member] 0–500 Asset Carrying Amount, 0 To $500,000,000 [Member] Asset Carrying Amount, 0 To $500,000,000 [Member] No quoted market price in active market Level 3 Level 3 of fair value hierarchy [member] Other comprehensive income Income tax relating to components of other comprehensive income Account services Account Services Fee Income Account Services Fee Income Reverse repurchase agreements – non-trading Reverse Repos [Member] Reverse Repos Adjustments for non-cash items Adjustments For Non-Cash Items Adjustments For Non-Cash Items Financial investments Financial investments Financial Assets At Amortised Cost And At Fair Value Through Other Comprehensive Income, Category [Member] Financial Assets At Amortised Cost And At Fair Value Through Other Comprehensive Income, Category [Member] Losses recognised on sale of business operations6 Gain/(loss) on disposal of operations Loss on disposal of operations Gain (loss) recognised on measurement to fair value less costs to sell or on disposal of assets or disposal groups constituting discontinued operation Unobservable inputs [axis] Unobservable inputs [axis] Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] HSBC Bank Pension Trust (UK) Limited HSBC Bank Pension Trust (UK) Limited [Member] HSBC Bank Pension Trust (UK) Limited [Member] Interests in joint ventures Investments in joint ventures reported in separate financial statements Assets written off Assets written off Decrease through write-off, financial assets Loans and advances at amortised cost Loans and advances at amortised cost Tax related investigations Tax related investigations [Member] Tax related investigations Risk-weighted assets as a percentage of total assets in the short to medium term Description Of Risk-Weighted Assets As Percentage Of Total Assets In Current Estimate Of Value In Use Description Of Risk-Weighted Assets As Percentage Of Total Assets In Current Estimate Of Value In Use Financial liabilities Net financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements [abstract] Strong Strong [Member] Strong [Member] 7.35% Subordinated Notes due 2032 (US404280DJ50) 7.35% Subordinated Notes due 2032 [Member] 7.35% Subordinated Notes due 2032 HSBC Nominees (Asing) Sdn Bhd HSBC Nominees (Asing) Sdn Bhd [Member] HSBC Nominees (Asing) Sdn Bhd [Member] – movements in provisions for uncertain tax positions Tax Effect Of Movement In Uncertain Tax Positions Tax Effect Of Movement In Uncertain Tax Positions HSBC InvestDirect Sales & Marketing (India) Private Limited HSBC InvestDirect Sales & Marketing (India) Private Limited [Member] HSBC InvestDirect Sales & Marketing (India) Private Limited – other income/(losses) Other Income (Loss) [Member] Other Income (Loss) Disclosure of remuneration of executive Directors Disclosure Of Detailed Information About Directors' Remuneration [Table Text Block] Disclosure Of Detailed Information About Directors' Remuneration [Table Text Block] Past due status [axis] Past due status [axis] HSBC Mortgage Corporation (USA) HSBC Mortgage Corporation (USA) [Member] HSBC Mortgage Corporation (USA) [Member] Net income/(expense) from financial instruments measured at fair value through profit and loss Disclosure of financial instruments at fair value through profit or loss [text block] HSBC Software Development (Malaysia) Sdn Bhd HSBC Software Development (Malaysia) Sdn Bhd [Member] HSBC Software Development (Malaysia) Sdn Bhd [Member] Number of historical banking relationships Number Of Historical Banking Relationships Number Of Historical Banking Relationships HSBC Leasing (Asia) Limited HSBC Leasing (Asia) Limited [Member] HSBC Leasing (Asia) Limited [Member] Forfeited in the year (in shares) Cancelled in period (in shares) Number of other equity instruments forfeited in share-based payment arrangement – Pillar 2 and qualifying domestic top-up taxes Current tax expense (income), related to Pillar Two income taxes Financial assets with HSBC undertakings designated and otherwise mandatorily measured at fair value Financial assets with HSBC undertakings designated and otherwise mandatorily measured at fair value Loans And Advances To Banks At Fair Value Loans And Advances To Banks At Fair Value Notional returns Directors Remuneration Expense, Notional Returns Directors Remuneration Expense, Notional Returns HSBC Life Assurance (Malta) Ltd. HSBC Life Assurance (Malta) Ltd. [Member] HSBC Life Assurance (Malta) Ltd. – other Other Assets (Negative Cash) Amount Contributed To Fair Value Of Plan Assets Other Assets (Negative Cash) Amount Contributed To Fair Value Of Plan Assets Tax rate effect of gain (loss) on unrecognised deferred tax Tax Rate Effect Of Gain (Loss) On Unrecognised Deferred Tax Tax Rate Effect Of Gain (Loss) On Unrecognised Deferred Tax Share interests (number of shares) Key Management Personnel Compensation, Share Interests Held Key Management Personnel Compensation, Share Interests Held WARDLEY LIMITED WARDLEY LIMITED [Member] WARDLEY LIMITED Benefits expected to be paid from plans Maturity Of Payments In Respect Of Settlements, Net Defined Benefit Liability (Asset) Maturity Of Payments In Respect Of Settlements, Net Defined Benefit Liability (Asset) Tekoma Energy Inc Tekoma Energy Inc [Member] Tekoma Energy Inc Prepayments, accrued income and other assets Disclosure of prepayments and other assets [text block] HSBC Issuer Services Common Depositary Nominee (UK) Limited HSBC Issuer Services Common Depositary Nominee (UK) Limited [Member] HSBC Issuer Services Common Depositary Nominee (UK) Limited [Member] United States Internal Revenue Service (IRS)1 [Member] Internal Revenue Service (IRS)1 [Member] 5.887% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 (US404280DZ92) 5.887% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 [Member] 5.887% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 Structured notes Structured Notes, Liabilities [Member] Structured Notes, Liabilities [Member] 5.250% Subordinated Notes due 2044 (US404280AQ21) 5.25% Subordinated Notes Due March 2044 [Member] 5.25% Subordinated Notes Due March 2044 [Member] Percentage of base salary received in lieu of pension contributions Directors Renumeration Expense, Percentage Of Base Salary Received In Lieu Of Pension Contributions Directors Renumeration Expense, Percentage Of Base Salary Received In Lieu Of Pension Contributions ProServe Bermuda Limited ProServe Bermuda Limited [Member] ProServe Bermuda Limited [Member] EUR1,000m issued at 6.000% EUR 1,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] EUR 1,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] Period for substantial recovery of deferred tax assets (liabilities) Deferred Tax Asset, Period For Substantial Recovery Deferred Tax Asset, Period For Substantial Recovery Disclosure of detailed information about financial instruments Disclosure of detailed information about financial instruments [text block] Other assets Other assets [member] – reverse repurchase agreements with banks of one month or less Other banking arrangements, classified as cash equivalents Called up share capital and share premium Issued Capital And Share Premium [Member] Issued Capital And Share Premium [Member] Guarantees issued and others Guarantees Issued And Other Financial Assets [Member] Guarantees Issued And Other Financial Assets Equity correlation Equity Correlation, Measurement Input [Member] Equity Correlation, Measurement Input [Member] Cash margins pledged Cash Margin Pledged Subject To Enforceable Master Netting Arrangement Or Similar Agreement Not Set Off Against Financial Liabilities Cash Margin Pledged Subject To Enforceable Master Netting Arrangement Or Similar Agreement Not Set Off Against Financial Liabilities ECL income statement change for the period ECL income statement change for the period Increase (decrease) in financial assets Categories Of Key Assumptions [Axis] Categories Of Key Assumptions [Axis] Categories Of Key Assumptions [Axis] HSBC Global Custody Nominee (UK) Limited HSBC Global Custody Nominee (UK) Limited [Member] HSBC Global Custody Nominee (UK) Limited [Member] Classes of other provisions [axis] Classes of other provisions [axis] Number of components in VIU calculation Number Of Main Components In Value-In-Use Calculation Number Of Main Components In Value-In-Use Calculation Debt securities in issue Disclosure of debt instruments [text block] Award Basis [Domain] Award Basis [Domain] [Domain] for Award Basis [Axis] Hang Seng Investment Services Limited Hang Seng Investment Services Limited [Member] Hang Seng Investment Services Limited [Member] $2,250m issued at 6.375% $2,250m 6.375% Perpetual Subordinated Contingent Convertible Securities [Member] $2,250m 6.375% Perpetual Subordinated Contingent Convertible Securities [Member] Keyser Ullmann Limited Keyser Ullmann Limited [Member] Keyser Ullmann Limited [Member] – insurance service revenue Total insurance revenue Total insurance revenue Insurance revenue 2.013% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280CL16) 2.013% Fixed/Floating Rate Senior Unsecured Notes Due 2028 [Member] 2.013% Fixed/Floating Rate Senior Unsecured Notes Due 2028 Additional information [abstract] Additional information [abstract] Over 20 years Later than twenty years [Member] Later than twenty years Fair value Not measured at fair value in statement of financial position but for which fair value is disclosed [member] Disclosure of insurance subsidiaries sensitivity analysis to market risk Sensitivity analysis for types of market risk [text block] Other structural foreign exchange3 Other Currency [Member] Climate Asset Management Limited Climate Asset Management Limited [Member] Climate Asset Management Limited Immediate shares Immediate Share Awards [Member] Immediate Share Awards Derivatives Fair value of derivative liabilities Derivative financial liabilities Disclosure of credit risk exposure [line items] Disclosure of credit risk exposure [line items] Disclosure of defined benefit plans Disclosure of defined benefit plans [text block] Expense rates Measurement Input, Expense Rate [Member] Measurement Input, Expense Rate HSBC Equity (UK) Limited (In Liquidation) HSBC Equity (UK) Limited [Member] HSBC Equity (UK) Limited [Member] Due over 3 months but not more than 6 months Later than three months and not later than six months [member] Ordinary shares Ordinary shares [member] HSBC Broking Futures (Asia) Limited HSBC Broking Futures (Asia) Limited [Member] HSBC Broking Futures (Asia) Limited [Member] Diversified Loan Fund – Direct Lending A S.a.r.l Diversified Loan Fund – Direct Lending A S.a.r.l [Member] Diversified Loan Fund – Direct Lending A S.a.r.l Loan impairment provisions Allowance for credit losses [member] Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [text block] Liabilities of disposal groups held for sale Liabilities of disposal groups held for sale Liabilities included in disposal groups classified as held for sale – second interim dividend Second Quarter Dividend, Previous Year [Member] Second Quarter Dividend [Member] Equity instruments measured at fair value through other comprehensive income Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [text block] Subordinated liabilities – subordinated liabilities Subordinated Debt1 [Member] Subordinated Debt1 [Member] Earning per share Disclosure of earnings per share [text block] Auditor's remuneration Disclosure of auditors' remuneration [text block] Gross amount Gross carrying amount Total gross loans and advances Gross carrying amount [member] High Time Investments Limited High Time Investments Limited [Member] High Time Investments Limited [Member] 6.332% Fixed Rate/Floating Rate Senior Unsecured Notes due 2044 (US404280DW61) 6.332% Fixed Rate/Floating Rate Senior Unsecured Notes due 2044 [Member] 6.332% Fixed Rate/Floating Rate Senior Unsecured Notes due 2044 Applicable tax rate Taxation at UK corporation tax rate of 25.0% (2024: 25.0%, 2023: 23.5%) Applicable tax rate Change in other liabilities Adjustments for increase (decrease) in other liabilities – movements in unrecognised deferred tax Tax Rate Effect Of Movement In Foreign Unrecognised Deferred Tax Tax Rate Effect Of Movement In Unrecognised Deferred Tax Insurance revenue Insurance revenue [abstract] – Hong Kong Government certificates of indebtedness Currency Notes In Circulation [Member] Currency Notes In Circulation [Member] HSBC PB Services (Suisse) SA HSBC PB Services (Suisse) SA [Member] HSBC PB Services (Suisse) SA [Member] – subordinated liabilities and preferred securities Subordinated Liabilities And Preferred Securities [Member] Subordinated Liabilities And Preferred Securities [Member] Less than 1 year 2026 No later than one year Not later than one year [member] Pro Forma Pro Forma1 [Member] Pro Forma1 [Member] Investments in subsidiaries Investments In Subsidiaries, Highest Amount During The Year Investments In Subsidiaries, Highest Amount During The Year Current tax liabilities Current tax liabilities Financial assets and off-balance sheet loan commitments Financial Assets And Off-balance Sheet Loan Commitments Financial Assets And Off-balance Sheet Loan Commitments – fee income Fee income Fee and commission income HSBC Securities Services (Luxembourg) S.A. HSBC Securities Services (Luxembourg) S.A. [Member] HSBC Securities Services (Luxembourg) S.A. [Member] 10% depreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Foreign Currency Translation Year ended 31 Dec Year ended 31 Dec Auditor's remuneration Financial Investments Excluding Equity Securities Financial Investments Excluding Equity Securities [Member] Financial Investments Excluding Equity Securities [Member] Net amounts in the balance sheet Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position Disclosure of financial assets [line items] Disclosure of financial assets [line items] Weighting actual (%) Weighting Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Actual Weighting Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Actual Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [table] Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [table] HSBC Global Asset Management (Singapore) Limited HSBC Global Asset Management (Singapore) Limited [Member] HSBC Global Asset Management (Singapore) Limited [Member] HSBC Global Services (China) Holdings Limited HSBC Global Services (China) Holdings Limited [Member] HSBC Global Services (China) Holdings Limited [Member] Debt securities issued Proceeds from borrowings, classified as financing activities 3.00% Resettable Senior Unsecured Notes due 2030 (XS2003500142) 3% Resettable Senior Unsecured Notes Due 2030 [Member] 3% Resettable Senior Unsecured Notes Due 2030 HSBC Bank Malaysia Berhad HSBC Bank Malaysia Berhad [Member] HSBC Bank Malaysia Berhad [Member] Market risk Market risk [member] – fair value gains Other comprehensive income, before tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets Yan Nin Development Company Limited Yan Nin Development Company Limited [Member] Yan Nin Development Company Limited [Member] Disclosure of coupons on capital securities classified as equity Disclosure Of Discretionary Coupons On Capital Securities [Table Text Block] Disclosure Of Discretionary Coupons On Capital Securities [Table Text Block] Consensus central scenario Central scenario Consensus Central scenario allowance for ECL Central Scenario [Member] Central Scenario HSBC Investment Funds (Hong Kong) Limited HSBC Investment Funds (Hong Kong) Limited [Member] HSBC Investment Funds (Hong Kong) Limited [Member] Number of current and former employees Number Of Current And Former Employees Number Of Current And Former Employees Price Prices, Measurement Input [Member] Inflation rate (CPI) Actuarial Assumption Of Expected Rates Of Inflation, Consumer Price Index Actuarial Assumption Of Expected Rates Of Inflation, Consumer Price Index Benefits paid Decrease (increase) in net defined benefit liability (asset) resulting from payments in respect of settlements Fixed pay allowance ('FPA') Directors Remuneration Expense, Fixed Pay Allowance Directors Remuneration Expense, Fixed Pay Allowance Liquidity risk Liquidity risk [member] Fees Key Management Personnel Compensation, Fees Key Management Personnel Compensation, Fees Share interests (in shares) Key Management Personnel Compensation, Shareholding Retention Requirement, Number Of Shares Held Key Management Personnel Compensation, Shareholding Retention Requirement, Number Of Shares Held Adjusted weighted average number of ordinary shares outstanding (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Multi-seller conduit Multi-Seller Conduit [Member] Multi-Seller Conduit [Member] Mortgages First lien residential mortgages Mortgages [member] Gross amounts Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements Securities issued by other HSBC subsidiaries Other Subsidiaries [Member] Other Subsidiaries Conversion threshold, common equity tier 1 percentage Conversion Threshold, Common Equity Tier 1 Percentage Conversion Threshold, Common Equity Tier 1 Percentage – bonds index-linked Floating interest rate [member] Subordinated loan capital repaid Repayments of subordinated liabilities – equities Equity instruments, amount contributed to fair value of plan assets Treasury and other eligible bills – treasury and other eligible bills Treasury And Other Eligible Bills [Member] Treasury And Other Eligible Bills [Member] – origination and reversal of temporary differences Deferred tax expense (income) relating to origination and reversal of temporary differences Normal employee retirement age Key Management Personnel Compensation, Normal Employee Retirement Age Key Management Personnel Compensation, Normal Employee Retirement Age Factors Effecting Change [Axis] Factors Effecting Change [Axis] Factors Effecting Change Scorecard outcome Directors Remuneration Expense, Scorecard Outcome Directors Remuneration Expense, Scorecard Outcome Other Other Other Financial Assets [Member] Other Financial Assets [Member] HSBC UK Covered Bonds (LM) Limited HSBC UK Covered Bonds (LM) Limited [Member] HSBC UK Covered Bonds (LM) Limited Inmobiliaria Bisa, S.A. de C.V. Inmobiliaria Bisa, S.A. de C.V. [Member] Inmobiliaria Bisa, S.A. de C.V. 1 to 29 DPD One To Twenty-Nine Days Past Due [Member] One To Twenty-Nine Days Past Due [Member] Other audit fees payable Auditor's Remuneration For Other Audit Services Auditor's Remuneration For Other Audit Services Disclosure of joint ventures [line items] Disclosure of joint ventures [line items] Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Transfers Decrease in merger reserve Increase (Decrease) Through Transfer Between Merger Reserve And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Merger Reserve And Retained Earnings, Equity HSBC Private Trustee (Hong Kong) Limited HSBC Private Trustee (Hong Kong) Limited [Member] HSBC Private Trustee (Hong Kong) Limited [Member] Net trading activities Trading securities Trading securities Trading securities [member] Maximum opportunity (% of salary) Directors Remuneration Expense, Maximum Opportunity, Percent Of Salary Directors Remuneration Expense, Maximum Opportunity, Percent Of Salary HSBC sponsored structured entities Description Of Accounting Policy For Sponsored Structured Entities Explanatory [Policy Text Block] Description Of Accounting Policy For Sponsored Structured Entities [Policy Text Block] Performance Categories And Objectives [Axis] Performance Categories And Objectives [Axis] Performance Categories And Objectives [Axis] Disclosure of quantitative information about leases for lessor [abstract] Contingent Matter Closed Contingent Matter Closed [Member] Contingent Matter Closed Customer accounts Customer Accounts [Member] Customer Accounts [Member] – Tier 2 securities issued by HSBC Bank USA Inc HSBC Bank USA Inc [Member] HSBC Bank USA Inc Unrealised gains or losses recognised in profit or loss for assets and liabilities held at end of period Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement Disclosure of Funds [Table] Disclosure of Funds [Table] Disclosure of Funds [Table] Of which exercisable (in GBP per share) Weighted average exercise price of share options exercisable in share-based payment arrangement – non-controlling interests Profit attributable to non-controlling interests Profit (loss), attributable to non-controlling interests – non-bank financial institutions Non-Bank Financial Institutions Loans Sector [Member] Non-Bank Financial Institutions Loans Sector [Member] Equity Equity [abstract] Private equity including strategic investments Other equity securities [member] Software capitalisation costs Software Capitalisation Costs [Member] Software Capitalisation Costs Summarised aggregate financial information of associates Disclosure of reconciliation of summarised financial information of associate accounted for using equity method to carrying amount of interest in associate [text block] Common equity tier 1 capital: instruments and reserves Common Equity Tier One Capital Instruments And Reserves [Abstract] Common Equity Tier One Capital Instruments And Reserves HSBC Securities Brokers (Asia) Limited HSBC Securities Brokers (Asia) Limited [Member] HSBC Securities Brokers (Asia) Limited [Member] Disclosure of interests in joint ventures Disclosure of interests in joint arrangements [text block] Life expectancy at age 60 Actuarial assumption of life expectancy after retirement HSBC Holdings HSBC Holdings HSBC Holdings [Member] HSBC Holdings [Member] Subclassifications of assets, liabilities and equities [abstract] Subclassifications of assets, liabilities and equities [abstract] 6.254% Fixed Rate/Floating Rate Senior Unsecured Notes due 2034 (US404280DV88) 6.254% Fixed Rate/Floating Rate Senior Unsecured Notes due 2034 [Member] 6.254% Fixed Rate/Floating Rate Senior Unsecured Notes due 2034 Floating Rate Senior Unsecured Notes due 2030 (US404280EP02) Floating Rate Senior Unsecured Notes due 2030 [Member] Floating Rate Senior Unsecured Notes due 2030 Effect on profit after tax for the year Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Effect On Contractual Service Margin [Abstract] Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Effect On Contractual Service Margin – local taxes and overseas withholding taxes Tax Rate Effect Of Foreign And Local Taxes Tax Rate Effect Of Foreign And Local Taxes Debt instruments at fair value through other comprehensive income Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income Energy [Domain] Energy [Domain] Capitalisation, intangible assets other than goodwill Additions other than through business combinations, intangible assets other than goodwill – transfers from stage 3 Increase (Decrease) Through Transfers, Financial Assets, Transfers Out From Stage 3 Increase (Decrease) Through Transfers, Financial Assets, Transfers Out From Stage 3 – gains less losses from financial investments at fair value through other comprehensive income Gain (Loss) On Financial Instruments [Member] Gain (Loss) On Financial Instruments [Member] Amounts recognised in OCI Financial assets at fair value through other comprehensive income, category Financial investments - measured at fair value through other comprehensive income Financial assets at fair value through other comprehensive income, category [member] Rate of increase for pensions Actuarial assumption of expected rates of pension increases Mandatorily measured at fair value Financial assets at fair value through profit or loss, mandatorily measured at fair value, category [member] +100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Parallel Shift In Yield Curves Interest expense for financial liabilities not at fair value through profit or loss Interest expense for financial liabilities not at fair value through profit or loss Net income/(expense) from assets and liabilities of insurance businesses, including related derivatives, measured at fair value through profit or loss Net income/(expense) from assets and liabilities of insurance businesses, including related derivatives, measured at fair value through profit or loss Increase (decrease) through insurance revenue, insurance contracts liability (asset) Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Banks, sovereigns, government entities and low-risk counterparties Banks, Sovereigns And Government Entities [Member] Banks, Sovereigns And Government Entities Change in fair value Change in fair value Gain (loss) on change in fair value of hedging instrument used as basis for recognising hedge ineffectiveness HSBC Alternative Investments Limited HSBC Alternative Investments Limited [Member] HSBC Alternative Investments Limited [Member] Auditor Firm ID Auditor Firm ID HSBC Trinkaus & Burkhardt Gesellschaft fur Bankbeteiligungen mbH HSBC Trinkaus & Burkhardt Gesellschaft fur Bankbeteiligungen mbH [Member] HSBC Trinkaus & Burkhardt Gesellschaft fur Bankbeteiligungen mbH Post-employment benefits Key management personnel compensation, post-employment benefits HSBC North America Holdings Inc. HSBC North America Holdings Limited [Member] HSBC North America Holdings Limited Corporate lending adjustments Corporate Lending Adjustments [Member] Corporate Lending Adjustments Service cost Current Service Cost, Net Past Service Cost And Gains (Losses) Arising From Settlements, Net Defined Benefit Liability (Asset) Current Service Cost, Net Past Service Cost And Gains (Losses) Arising From Settlements, Net Defined Benefit Liability (Asset) – impact of business disposals Tax Rate Effect Of Business Disposals Tax Rate Effect Of Business Disposals Silkroad GP II Limited Silkroad GP II Limited [Member] Silkroad GP II Limited HSBC USD Senior Direct Lending GP S.à.r.l HSBC USD Senior Direct Lending GP S.à.r.l [Member] HSBC USD Senior Direct Lending GP S.à.r.l – bonds Other Portfolios, Assets, Bonds [Member] Other Portfolios, Assets, Bonds Trading liabilities Disclosure of financial liabilities held for trading [text block] Interest accreted Interest accreted Interest accreted – stock borrowing Stock Borrowing [Member] Stock Borrowing [Member] Corporate Center Corporate1 [Member] Corporate1 [Member] MP Payments Singapore Pte. Ltd. (In Liquidation) MP Payments Singapore Pte. Ltd. [Member] MP Payments Singapore Pte. Ltd. MENA Infrastructure Fund (GP) Ltd MENA Infrastructure Fund (GP) Ltd [Member] MENA Infrastructure Fund (GP) Ltd [Member] – impact of hyperinflation Tax Rate Effect Of Hyperinflation Impact Tax Rate Effect Of Hyperinflation Impact Red Hexagon ETA Tekoma Japan Limited Red Hexagon ETA Tekoma Japan Limited [Member] Red Hexagon ETA Tekoma Japan Limited 3.000% Resettable Senior Unsecured Notes due 2028 (XS1961843171) 3% Resettable Senior Unsecured Notes Due 2028 [Member] 3% Resettable Senior Unsecured Notes Due 2028 Insurance acquisition cash flows Increase (decrease) through insurance acquisition cash flows, insurance contracts liability (asset) – impact of sale of French retail banking business Tax Effect Of Sale Of Disposal Group Tax Effect Of Sale Of Disposal Group Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] Total management judgemental adjustments (B) Management Judgemental Adjustments [Member] Management Judgemental Adjustments Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [table] Title and Position [Axis] Title and Position [Axis] Other movements Increase (decrease) in net defined benefit liability (asset) resulting from other changes Financial liabilities at amortised cost Financial liabilities at amortised cost Total investment return (memorandum) Investment Return Investment Return Retention period Share-Based Compensation Arrangement By Share-Based Payment Award, Retention Period Share-Based Compensation Arrangement By Share-Based Payment Award, Retention Period HSBC Retirement Services Limited (In Liquidation) HSBC Retirement Services Limited (In Liquidation) [Member] HSBC Retirement Services Limited (In Liquidation) Honey Blue Enterprises Limited Honey Blue Enterprises Limited [Member] Honey Blue Enterprises Limited Deposits by banks Due to and placements from banks and other financial institutions Deposits by banks Deposits from banks Environment Performance Metric, Environment [Member] Performance Metric, Environment Income Tax Authority, Name [Domain] Income Tax Authority, Name1 [Domain] [Domain] for Income Tax Authority, Name1 [Axis] Net operating income Net Operating Income Net Operating Income Customer accounts Customer accounts Deposits from customers Type of measurement of expected credit losses [domain] Type of measurement of expected credit losses [domain] HSBC USA Inc. HSBC USA Inc. [Member] HSBC USA Inc. [Member] Other derivatives Other Derivatives, Liabilities [Member] Other Derivatives, Liabilities [Member] Vesting percentage Total Share-Based Compensation Arrangement By Share-Based Payment Award, Vesting Outcome Of Performance Metrics Share-Based Compensation Arrangement By Share-Based Payment Award, Vesting Outcome Of Performance Metrics Assetfinance December (H) Limited (In Liquidation) Assetfinance December (H) Limited [Member] Assetfinance December (H) Limited [Member] Term of options granted for share-based payment arrangements Term Of Options Granted For Share-based Payment Arrangements Term Of Options Granted For Share-based Payment Arrangements Total operating expenses Operating Expense (Income) Operating Expense (Income) – fair value gains/(losses) Other comprehensive income, before tax, gains (losses) from investments in equity instruments HSBC Transaction Services GmbH HSBC Transaction Services GmbH [Member] HSBC Transaction Services GmbH [Member] Disclosure of maturity analysis of finance lease payments receivable [line items] Disclosure of maturity analysis of finance lease payments receivable [line items] Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets Expense from equity-settled share-based payment transactions HSBC Overseas Nominee (UK) Limited HSBC Overseas Nominee (UK) Limited [Member] HSBC Overseas Nominee (UK) Limited [Member] Assets held for sale – assets held for sale Assets held for sale Non-current assets or disposal groups classified as held for sale 1 to 5 years Later than one year and no later than five years Later than one year and not later than five years [member] Continuing operations, unless line item indicates otherwise Continuing operations, unless line item indicates otherwise [member] Valuation techniques used in fair value measurement [domain] Valuation techniques used in fair value measurement [domain] Disclosure of detailed information about hedged items [table] Disclosure of detailed information about hedged items [table] Items of contingent liabilities [domain] Items of contingent liabilities [domain] Settlements Settlements, fair value measurement, liabilities Maximum Top of range Top of range [member] Earnings per share [line items] Earnings per share [line items] Of which: face value £000 Equity Instruments, Face Value Equity Instruments, Face Value Average share price (in gbp per share) Weighted average share price Scenario [Axis] Scenario [Axis] Disclosure of balance sheet amounts related to insurance manufacturing subsidiaries Additional information about insurance contracts [text block] Weighted average fair value of awards granted (in dollars per share) Weighted average exercise price of other equity instruments granted in share-based payment arrangement HSBC Insurance Agency (USA) Inc. HSBC Insurance Agency (USA) Inc. [Member] HSBC Insurance Agency (USA) Inc. [Member] Retention period Directors Remuneration Expense, Annual Incentive, Retention Period Directors Remuneration Expense, Annual Incentive, Retention Period Remeasurement of defined benefit asset/(liability) – remeasurement of defined benefit asset/liability Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Other trading entities2 Other Trading Entities [Member] Other Trading Entities Increase (decrease) in financial assets, sensitive portfolios Increase (Decrease) In Financial Assets Included In Sensitivity Analysis Increase (Decrease) In Financial Assets Included In Sensitivity Analysis AI Nominees (UK) Two Limited AI Nominees (UK) Two Limited [Member] AI Nominees (UK) Two Limited Income Statement Location [Domain] Income Statement Location1 [Domain] [Domain] for Income Statement Location1 [Axis] Types Of Market Risk Portfolios [Domain] Types Of Market Risk Portfolios [Domain] [Domain] for Types Of Market Risk Portfolios [Axis] Cash flows payable under financial liabilities and other contractual commitments Financial Liabilities And Other Contractual Commitments, Undiscounted Cash Flows Financial Liabilities And Other Contractual Commitments, Undiscounted Cash Flows total return swaps Derivative, Return Swaps, Liabilities [Member] Derivative, Return Swaps, Liabilities Silkroad Property Partners PTE. LTD. Silkroad Property Partners PTE. LTD. [Member] Silkroad Property Partners PTE. LTD. Additional tier 1 capital before regulatory adjustments Additional Tier One Capital, Before Regulatory Adjustments Additional Tier One Capital, Before Regulatory Adjustments Amounts recognised in OCI Amounts Recognised In Other Comprehensive Income [Member] Amounts Recognised In Other Comprehensive Income HSBC Securities (Japan) Co., Ltd. HSBC Securities (Japan) Co., Ltd. [Member] HSBC Securities (Japan) Co., Ltd. Reverse repurchase agreements – non-trading Reverse Repurchase Agreement, Non-trading Reverse Repurchase Agreement, Non-trading [Member] Reverse Repurchase Agreement, Non-trading [Member] – non-taxable income and gains Tax effect of revenues exempt from taxation 2024 LTI Award 2024 LTI Award [Member] 2024 LTI Award HSBC Trustee (Hong Kong) Limited HSBC Trustee (Hong Kong) Limited [Member] HSBC Trustee (Hong Kong) Limited [Member] HSBC Broking Services (Asia) Limited HSBC Broking Services (Asia) Limited [Member] HSBC Broking Services (Asia) Limited [Member] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Swee Lian Teo Swee Lian Teo Non-Executive Director, Swee Lian Teo [Member] Non-Executive Director, Swee Lian Teo Other related parties Other related parties [member] Cash flows payable under financial liabilities Financial Liabilities, Undiscounted Cash Flows Financial Liabilities, Undiscounted Cash Flows Foreign exchange Foreign currency Foreign exchange and commodity Currency risk [member] Carrying amount of transferred assets Assets that entity continues to recognise Maximum shares required to deliver all outstanding options (in shares) Maximum Shares Required To Deliver All Outstanding Options Maximum Shares Required To Deliver All Outstanding Options Saf Guangzhou Saf Guangzhou [Member] Saf Guangzhou [Member] UK banking surcharge Tax Rate Effect Of Domestic Banking Surcharge Tax Rate Effect Of Domestic Banking Surcharge Financing Receivable Portfolio Segment1 [Axis] Financing Receivable Portfolio Segment1 [Axis] Financing Receivable Portfolio Segment1 [Axis] other interest rate derivatives Other Derivative Liabilities, Miscellaneous [Member] Other Derivatives Liabilities, Miscellaneous [Member] Claw-back period Share-Based Compensation Arrangement By Share-Based Payment Award, Claw-Back Period Share-Based Compensation Arrangement By Share-Based Payment Award, Claw-Back Period Other comprehensive income/(expense) for the year, net of tax Other comprehensive income Other comprehensive income Trading portfolios Trading Portfolios [Member] Trading Portfolios [Member] Trinkaus Private Equity Verwaltungs GmbH Trinkaus Private Equity Verwaltungs GmbH [Member] Trinkaus Private Equity Verwaltungs GmbH [Member] Transfers out Transfers out Transfers out of Level 3 of fair value hierarchy, assets Counterparties [domain] Counterparties [domain] Past due status [domain] Past due status [domain] Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Forecast Forecast [Member] Title of 12(b) Security Title of 12(b) Security Amounts due to joint ventures Joint ventures where entity is venturer [member] Capital securities issued Issue of equity Number of shares held in employee benefit trust (in shares) Number Of Shares Held In Employee Benefit Trust Number Of Shares Held In Employee Benefit Trust Employee benefit assets (Note 5) Net defined benefit asset Industry Sector [Domain] Industry Sector 1 [Domain] [Domain] for Industry Sector 1 [Axis] Hedged items [member] Hedged items [domain] Pension payments and deferred pensions Actuarial assumption of expected rates of pension increases [member] Fixed pay allowance Fixed Pay Allowance Awards [Member] Fixed Pay Allowance Awards Profit before tax Accounting profit HSBC (Guernsey) Aggregator PCC Limited HSBC (Guernsey) Aggregator PCC Limited [Member] HSBC (Guernsey) Aggregator PCC Limited HSBC SFT (C.I.) Limited HSBC SFT (C.I.) Limited [Member] HSBC SFT (C.I.) Limited Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [table] Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [table] Capital instruments and the related share premium accounts Common Equity Tier One Capital, Capital Instruments And Related Party Share Premium Accounts Common Equity Tier One Capital, Capital Instruments And Related Party Share Premium Accounts Depreciation and impairment of property, plant and equipment and right-of-use assets Depreciation, property, plant and equipment including right-of-use assets Changes in estimates that result in losses and reversal of losses on onerous contracts Increase (Decrease) Through Changes In Estimates That Result In Losses And Reversal Of Losses On Onerous Contracts, Insurance Contracts Liability (Asset) Increase (Decrease) Through Changes In Estimates That Result In Losses And Reversal Of Losses On Onerous Contracts, Insurance Contracts Liability (Asset) Other contracts Insurance contracts, other insurance contracts [Member] Insurance contracts, other insurance contracts Good Good [Member] Good [Member] Subsidiaries [domain] Subsidiaries [domain] HSBC Finance (Netherlands) HSBC Finance (Netherlands) [Member] HSBC Finance (Netherlands) [Member] Scorecard outcome after risk adjustment (%) Scorecard Outcome After Risk Adjustment [Member] Scorecard Outcome After Risk Adjustment Disclosure of credit risk exposure Disclosure of credit risk exposure [text block] Accruals, deferred income and other liabilities Accruals, deferred income and other liabilities Accruals, Deferred Income And Other Liabilities Accruals, Deferred Income And Other Liabilities HSBC Insurance SAC 1 (Bermuda) Limited HSBC Insurance SAC 1 (Bermuda) Limited [Member] HSBC Insurance SAC 1 (Bermuda) Limited [Member] Employee compensation and benefits Employee compensation and benefits Employee Benefit Expense, Excluding Capitalised Wages And Salaries Employee Benefit Expense, Excluding Capitalised Wages And Salaries HSBC Factoring (France) HSBC Factoring (France) [Member] HSBC Factoring (France) [Member] Reconciliation of reported and adjusted items Disclosure Of Reconciliation Of Reported Amounts To Adjusted Amounts [Table Text Block] Disclosure Of Reconciliation Of Reported Amounts To Adjusted Amounts [Table Text Block] Benchmark rate litigation Benchmark Rate Litigation [Member] Benchmark Rate Litigation [Member] HSBC REIM (France) HSBC REIM (France) [Member] HSBC REIM (France) [Member] Other long-term employee benefits Key management personnel compensation, other long-term employee benefits Participant Current Demographic [Domain] Participant Current Demographic [Domain] [Domain] for Participant Current Demographic [Axis] Movements in carrying amounts of insurance contracts – analysis by remaining coverage and incurred claims Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [text block] Credit facilities Credit-related fee and commission income HSBC Middle East Securities L.L.C (In Liquidation) HSBC Middle East Securities L.L.C [Member] HSBC Middle East Securities L.L.C Long-term growth rate Long-Term Growth Rate, Measurement Input [Member] Long-Term Growth Rate, Measurement Input Financial Investments Financial liabilities designated at fair value Offsetting of financial assets and financial liabilities Disclosure of financial instruments [text block] HSBC Private Banking Nominee 3 (Jersey) Limited HSBC Private Banking Nominee 3 (Jersey) Limited [Member] HSBC Private Banking Nominee 3 (Jersey) Limited [Member] Classes of intangible assets and goodwill [domain] Classes of intangible assets and goodwill [domain] Fair value of hedging assets Carrying amount, assets Hedging instrument, assets Vesting Tranche 4 Vesting Tranche Four [Member] Vesting Tranche Four Disclosure Of Critical Performance Measures And Indicators Management Uses [Line Items] Disclosure Of Critical Performance Measures And Indicators Management Uses [Line Items] Disclosure Of Critical Performance Measures And Indicators Management Uses [Line Items] HSBC Insurance (Asia-Pacific) Holdings Limited HSBC Insurance (Asia-Pacific) Holdings Limited [Member] HSBC Insurance (Asia-Pacific) Holdings Limited [Member] Hang Seng Real Estate Management Limited Hang Seng Real Estate Management Limited [Member] Hang Seng Real Estate Management Limited [Member] Reinsurance contract assets Reinsurance contract assets Reinsurance contracts held that are assets Disclosure of range of exercise prices of outstanding share options [table] Disclosure of range of exercise prices of outstanding share options [table] – changes in fair value of other financial instruments mandatorily measured at fair value through profit or loss Changes In Fair Value Of Other Financial Instruments Mandatorily Measured At Fair Value Through Profit Or Loss [Member] Changes In Fair Value Of Other Financial Instruments Mandatorily Measured At Fair Value Through Profit Or Loss [Member] Somers Dublin DAC Somers Dublin DAC [Member] Somers Dublin DAC [Member] Summary Of Income Taxes [Line Items] Summary Of Income Taxes [Line Items] [Line Items] for Summary Of Income Taxes [Table] Capital reallocation to Asia target (with CET1 underpin) Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Capital Reallocation To Asia Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Capital Reallocation To Asia New IFRSs [domain] New IFRSs [domain] Share of HSBC’s constant currency profit before tax Percentage Of Entity's Adjusted Profit (Loss) Before Tax Percentage Of Entity's Adjusted Profit (Loss) Before Tax Sterling preference shares Sterling Preference Shares [Member] Sterling Preference Shares [Member] Disclosure of detailed information about intangible assets [line items] Disclosure of detailed information about intangible assets [line items] Consensus downside scenario Downside scenario Consensus Downside scenario allowance for ECL Downside Scenario , Worst Outcome [Member] Downside Scenario , Worst Outcome Global Payments Technology México, S.A. de C.V. Global Payments Technology Mexico S.A. De C.V. [Member] Global Payments Technology Mexico S.A. De C.V. [Member] UK UK, Segment [Member] UK [Member] – personal Loans to consumers 10–20 years Later than ten years and not later than twenty years [Member] Later than ten years and not later than twenty years Amounts not subject to enforceable netting arrangements Financial Instruments Not Subject To Enforceable Master Netting Arrangements In Statement Of Financial Position Financial Instruments Not Subject To Enforceable Master Netting Arrangements In Statement Of Financial Position Measure Of Growth In Net New Invested Assets Measure Of Growth In Net New Invested Assets [Member] Measure Of Growth In Net New Invested Assets Regulatory excellence, wealth acceleration and strategic investments, Group technology strategy Measure Of Personal Objectives, Technology Transformation [Member] Measure Of Personal Objectives, Technology Transformation Financial instruments measured at amortised cost Description of accounting policy for financial instruments [text block] Transition to net zero Performance Metric, Transition To Net Zero [Member] Performance Metric, Transition To Net Zero Independently reviewed net profits net of any foreseeable charge or dividend Common Equity Tier One Capital, Profit (Loss) Net Of Forseeable Charge Or Dividend Common Equity Tier One Capital, Profit (Loss) Net Of Forseeable Charge Or Dividend Reclassification adjustments on exchange differences on translation of foreign operations, before tax Reclassification adjustments on exchange differences on translation of foreign operations, before tax Interests In Other Entities [Abstract] Interests In Other Entities [Abstract] Interests In Other Entities [Abstract] Director Director1 [Member] Director1 [Member] – preferred securities Preferred Securities [Member] Preferred Securities [Member] Income statement Deferred tax expense (income) recognised in profit or loss Regulatory excellence, Group Sustainability priorities, robust liquidity and capital management Measure Of Personal Objectives, Finance Workforce [Member] Measure Of Personal Objectives, Finance Workforce Total gains/(losses) recognised in profit or loss Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, liabilities Assetfinance March (F) Limited Assetfinance March (F) Limited [Member] Assetfinance March (F) Limited [Member] Gross total fair values of derivative liabilities Gross Derivative Financial Liabilities, Including Not Subject to Enforceable Master Netting Arrangements Gross Derivative Financial Liabilities, Including Not Subject to Enforceable Master Netting Arrangements HK$ Hong Kong dollar-denominated structural foreign exchange Hong Kong, Dollars – cash collateral, net settlement accounts and items in course of collection from/transmission to other banks Cash Collateral And Net Settlement Accounts Cash Collateral And Net Settlement Accounts Disclosure of types of insurance contracts [table] Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [table] Group income protection (non-taxable) Directors Remuneration Expense, Benefits, Group Income Protection Directors Remuneration Expense, Benefits, Group Income Protection HSBC Bank A.S. HSBC Bank A.S. [Member] HSBC Bank A.S. [Member] GDP (annual average growth rate, %) Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, GDP Growth Rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, GDP Growth Rate HSBC Europe B.V. HSBC Europe B.V. [Member] HSBC Europe B.V. [Member] Portfolio Concentration Risk Portfolio Concentration Risk [Member] Portfolio Concentration Risk [Member] Losses and reversal of losses on onerous contracts Increase (decrease) through changes that relate to future service, insurance contracts liability (asset) Disclosure of registered offices from interests in subsidiaries, joint ventures, and associates Disclosure Of Registered Offices From Interests In Subsidiaries, Joint Arrangements, And Associates [Table Text Block] Disclosure Of Registered Offices From Interests In Subsidiaries, Joint Arrangements, And Associates [Table Text Block] Total future minimum payments Undiscounted finance lease payments to be received Disclosure of transactions between related parties [table] Disclosure of transactions between related parties [table] HSBC Nominees (Tempatan) Sdn Bhd HSBC Nominees (Tempatan) Sdn Bhd [Member] HSBC Nominees (Tempatan) Sdn Bhd [Member] Types of hedges [axis] Types of hedges [axis] Derivatives managed in conjunction with HSBC Holdings-issued debt securities Long-term Debt Issued And Related Derivatives, Derivatives Managed In Conjunction With Issued Debt Securities [Member] Long-term Debt Issued And Related Derivatives, Derivatives Managed In Conjunction With Issued Debt Securities [Member] $1,800m issued at 6.500% $1,800m 6.5% Perpetual Subordinated Contingent Convertible Securities [Member] $1,800m 6.5% Perpetual Subordinated Contingent Convertible Securities [Member] Attribution of expenses by nature to their function [axis] Attribution of expenses by nature to their function [axis] €1,250m issued at 4.750% EUR 1,250m 4.750% Perpetual Subordinated Contingent Convertible Securities [Member] EUR 1,250m 4.750% Perpetual Subordinated Contingent Convertible Securities [Member] 5–10 years Later than five years and not later than ten years [member] HSBC Securities Services Nominees Limited HSBC Securities Services Nominees Limited [Member] HSBC Securities Services Nominees Limited [Member] Disclosure of non-adjusting events after reporting period [table] Disclosure of non-adjusting events after reporting period [table] Cash collateral received with related party Cash Collateral Received, Related Party Transactions Cash Collateral Received, Related Party Transactions Add: current year charges for deferred bonuses from previous years Incentive Awards, Current Year Charges For Deferred Bonuses From Previous Years Incentive Awards, Current Year Charges For Deferred Bonuses From Previous Years Defined contribution pension plans Post-employment benefit expense, defined contribution plans HSBC Corporate Trustee Company (UK) Limited HSBC Corporate Trustee Company (UK) Limited [Member] HSBC Corporate Trustee Company (UK) Limited [Member] Total equity Components of equity [domain] – expected credit (recoveries)/losses recognised in the income statement – expected credit (recoveries)/losses recognised in the income statement Amounts removed from equity and adjusted against fair value of financial assets on reclassification out of fair value through other comprehensive income measurement category, before tax Dividends to shareholders Dividends recognised as distributions to owners Disclosure of operating segments [line items] Disclosure of operating segments [line items] HSBC Life (Bermuda) Limited HSBC Life (Bermuda) Limited [Member] HSBC Life (Bermuda) Limited Total related party liabilities at 31 Dec Liabilities, Highest Amount During The Year Liabilities, Highest Amount During The Year HSBC Investment Bank Holdings B.V. HSBC Investment Bank Holdings B.V. [Member] HSBC Investment Bank Holdings B.V. [Member] Average Weighted average [member] Contractual commitments1 Provision for credit commitments [member] Dame Carolyn Fairbairn Non-Executive Director, Dame Carolyn Fairbairn [Member] Non-Executive Director, Dame Carolyn Fairbairn HSBC Bank plc HSBC Bank plc [Member] HSBC Bank plc [Member] Total on-balance sheet exposure to credit risk On Balance Sheet Risk [Member] On Balance Sheet Risk [Member] Current tax assets Current tax assets Rachel Duan Non-Executive Director, Rachel Duan [Member] Non-Executive Director, Rachel Duan Amounts utilised Provision used, other provisions Range [domain] Range [domain] Classes of contingent liabilities [axis] Classes of contingent liabilities [axis] Disclosure of types of insurance contracts [line items] Disclosure of sensitivity analysis to changes in risk variables that arise from contracts within scope of IFRS 17 [line items] – Contractual service margin recognised for services provided Insurance revenue, contractual service margin recognised in profit or loss because of transfer of insurance contract services – interest income Interest income Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name Disclosure of key assumption in value in use calculation Disclosure of information for cash-generating units [text block] Carbon reduction assessment (own emissions) Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Carbon Reduction Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Carbon Reduction Customer satisfaction Measure Of Customer Satisfaction [Member] Measure Of Customer Satisfaction Scenario [Domain] Scenario [Domain] Amounts due to joint ventures and associates Amounts payable, related party transactions HSBC Life (UK) Limited HSBC Life (UK) Limited [Member] HSBC Life (UK) Limited [Member] Minority interests (amount allowed in consolidated CET1) Common Equity Tier One Capital, Non-controlling Interests Common Equity Tier One Capital, Non-controlling Interests Haseba Investment Company Limited Haseba Investment Company Limited [Member] Haseba Investment Company Limited [Member] US Anti-Terrorism Act litigation US Anti-Terrorism Act litigation [Member] US Anti-Terrorism Act litigation Unit trusts Unit Trusts Fee And Commission Income Unit Trusts Fee And Commission Income Expected credit loss rate Expected credit loss rate Insurance service expenses Increase (decrease) through insurance service expenses, insurance contracts liability (asset) [abstract] External net operating income by country Disclosure Of External Operating Income (Loss) By Geographical Areas [Table Text Block] Disclosure Of External Operating Income (Loss) By Geographical Areas [Table Text Block] Tier 1 capital adequacy ratio Description Of Tier 1 Capital Adequacy Ratio In Current Estimate Of Value In Use Description Of Tier 1 Capital Adequacy Ratio In Current Estimate Of Value In Use Banking Business In Canada & Business In Argentina Banking Business In Canada & Business In Argentina [Member] Banking Business In Canada & Business In Argentina Red Hexagon ETA Tekoma Taiwan Limited Red Hexagon ETA Tekoma Taiwan Limited [Member] Red Hexagon ETA Tekoma Taiwan Limited 7.399% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2034 (US404280EC98) 7.399% Fixed Rate/Floating Rate Subordinated Unsecured Notesdue 2034 [Member] 7.399% Fixed Rate/Floating Rate Subordinated Unsecured Notesdue 2034 Eileen Murray Non-Executive Director, Eileen Murray [Member] Non-Executive Director, Eileen Murray Oil and Gas, Average Sale Price and Production Cost Per Unit [Line Items] Oil and Gas, Average Sale Price and Production Cost Per Unit [Line Items] Types of customers [axis] Types of customers [axis] Gain (loss) from return on assets and liabilities supporting insurance policies Gain (Loss) From Return On Assets And Liabilities Supporting Insurance Policies Gain (Loss) From Return On Assets And 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Internationale Kapitalanlagegesellschaft mit beschränkter Haftung [Member] Internationale Kapitalanlagegesellschaft mit beschränkter Haftung HSBC LU Nominees Limited HSBC LU Nominees Limited [Member] HSBC LU Nominees Limited [Member] Brendan Nelson Brendan Nelson Non-Executive Director, Brendan Nelson [Member] Non-Executive Director, Brendan Nelson Excluding loss component Net liabilities or assets for remaining coverage excluding loss component [member] 5.402% Fixed Rate/Floating Rate Senior Unsecured Notes due 2033 (US404280DH94) 5.402% Fixed Rate/Floating Rate Senior Unsecured Notes due 2033 [Member] 5.402% Fixed Rate/Floating Rate Senior Unsecured Notes due 2033 Carrying amount of associated liabilities Associated liabilities that entity continues to recognise securitisation swaps Other Derivative Assets, Securitisation Swaps [Member] Other Derivative Assets, Securitisation Swaps [Member] Other Other fee and commission income Diluted earnings per ordinary share (in dollars per 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HSBC Trinkaus & Burkhardt (International) S.A. [Member] HSBC Trinkaus & Burkhardt (International) S.A. [Member] Total cash flows Total cash flows Increase (decrease) through cash flows, insurance contracts liability (asset) HSBC Life (Cornell Centre) Limited HSBC Life (Cornell Centre) Limited [Member] HSBC Life (Cornell Centre) Limited HSBC Asia Holdings B.V. HSBC Asia Holdings B.V. [Member] HSBC Asia Holdings B.V. [Member] Aged 40, Female Aged 40, Female [Member] Aged 45, Female [Member] Losses and reversal of losses on onerous contracts Increase (Decrease) Through Losses And Reversal Of Losses On Onerous Insurance Contracts, Insurance Contracts Liability (Asset) Increase (Decrease) Through Losses And Reversal Of Losses On Onerous Insurance Contracts, Insurance Contracts Liability (Asset) HSBC Bank (Mauritius) Limited HSBC Bank (Mauritius) Limited [Member] HSBC Bank (Mauritius) Limited [Member] Disclosure of associates [line items] Disclosure of associates [line items] Counterparty Name [Axis] Counterparty Name [Axis] Trinkaus Immobilien-Fonds Geschaeftsfuehrungs-GmbH Trinkaus Immobilien-Fonds Geschaeftsfuehrungs-GmbH [Member] Trinkaus Immobilien-Fonds Geschaeftsfuehrungs-GmbH [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Disposal groups held for sale Disposal Groups Held For Sale [Member] Disposal Groups Held For Sale Investment returns gains (losses) on underlying assets supporting insurance liabilities Investment Returns Gains (Losses) On Underlying Assets Supporting Insurance Liabilities Investment Returns Gains (Losses) On Underlying Assets Supporting Insurance Liabilities House prices (annual average growth rate, %) Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, House Price Growth Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, House Price Growth Concentration Risk Benchmark [Domain] Concentration Risk Benchmark1 [Domain] [Domain] for Concentration Risk Benchmark1 [Axis] Exclusions from sensitivity Financial Instruments Excluded From Sensitivity Analysis [Member] Financial Instruments Excluded From Sensitivity Analysis HSBC Financial Technology Venture Capital GP S.à r.l. HSBC Financial Technology Venture Capital GP S.à r.l. [Member] HSBC Financial Technology Venture Capital GP S.à r.l. – fair value (gains)/losses reclassified to the income statement Reclassification adjustments on cash flow hedges, before tax Discount rates Disclosure of yield curve used to discount cash flows that do not vary based on returns on underlying items [text block] HSBC Broking Securities (Hong Kong) Limited HSBC Broking Securities (Hong Kong) Limited [Member] HSBC Broking Securities (Hong Kong) Limited [Member] $1,000m issued at 4.700% $1,000m 4.7% Perpetual Subordinated Contingent Convertible Securities [Member] $1,000m 4.7% Perpetual Subordinated Contingent Convertible Securities – interest expense Interest expense Fair value of derivative liabilities Derivative Liabilities, At Fair Value, Related Party Derivative Liabilities, At Fair Value, Related Party Report Of The Directors Financial Review Risk Report [Abstract] Report of Directors Financial Review Risk Report [Abstract] Board of the Directors Report Risk Report [Abstract] Disclosure of geographical areas [line items] Disclosure of geographical areas [line items] HSBC Life (Singapore) Pte. Ltd. HSBC Life (Singapore) Pte. Ltd. [Member] HSBC Life (Singapore) Pte. Ltd. Dividends paid to holders of other equity instruments Dividends Paid To Holders Of Other Equity Instruments, Classified As Financing Activities Dividends Paid To Holders Of Other Equity Instruments, Classified As Financing Activities Formulaic scorecard outcome Formulaic Scorecard Outcome [Member] Formulaic Scorecard Outcome Deferred shares, without performance conditions Deferred Shares, Without Performance Conditions [Member] Deferred Shares, Without Performance Conditions [Member] Defined Contribution Pension Plan Defined Contribution Pension Plan [Member] Defined Contribution Pension Plan [Member] Reconciliation of Issued Capital [Roll Forward] Reconciliation of Issued Capital [Roll Forward] Reconciliation of Issued Capital [Roll Forward] Impairment loss recognised in profit or loss, intangible assets other than goodwill Impairment loss recognised in profit or loss, intangible assets other than goodwill Dividends paid on ordinary shares Dividends paid, ordinary shares Increase (decrease) through appropriation of retained earnings, equity Increase (decrease) through appropriation of retained earnings, equity Represented by [Axis] Represented by [Axis] Represented by HSBC Insurance (Asia) Limited HSBC Insurance (Asia) Limited [Member] HSBC Insurance (Asia) Limited [Member] Total liabilities in relation to HSBC’s interests in the unconsolidated structured entities Liabilities recognised in entity's financial statements in relation to structured entities Dividends to shareholders Dividends on other equity instruments Dividends paid, other shares 2–3 years 2028 Later than two years and not later than three years [member] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Fair value movements on financial instruments Adjustments for gains (losses) on change in fair value of derivatives Cash and cash equivalents comprise: Cash and cash equivalents [abstract] Underwriting Underwriting Income (Loss)1 Underwriting Income (Loss)1 Guarantees Guarantees, Related Party Transactions Guarantees, Related Party Transactions Amounts offset on derivative liabilities Amounts offset Gross financial assets set off against financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements other credit derivatives Other credit derivative, asset [Member] Other credit derivative, asset Total net finance expense from insurance contracts Finance income (cost) Valuation of financial instruments Description of accounting policy for fair value measurement [text block] Purchase of financial investments Purchase of financial instruments, classified as investing activities Hang Seng Financial Information Limited Hang Seng Financial Information Limited [Member] Hang Seng Financial Information Limited [Member] Disclosure of interests in associates Disclosure of interests in associates [text block] IFRS Accounting Standards adopted during the year ended 31 December 2025 Disclosure of changes in accounting policies [text block] Disclosure of sensitivity analysis for actuarial assumptions [line items] Disclosure of sensitivity analysis for actuarial assumptions [line items] Tax rate effect of gain (loss) on pillar two global minimum tax charge Tax Rate Effect Of Gain (Loss) On Pillar Two Global Minimum Tax Charge Tax Rate Effect Of Gain (Loss) On Pillar Two Global Minimum Tax Charge Floating Rate Senior Unsecured Notes due 2028 (US404280EK15) Floating Rate Senior Unsecured Notes due 2028 [Member] Floating Rate Senior Unsecured Notes due 2028 Collateralised Loans And Advances [Axis] Collateralised Loans And Advances [Axis] Collateralised Loans And Advances [Axis] – Change in risk adjustment for non-financial risk for risk expired Insurance revenue, change in risk adjustment for non-financial risk Impact on VIU Sensitivity Analysis, Increase (Decrease) Due To Reasonably Possible Change In Risk Variable, Amount Sensitivity Analysis, Increase (Decrease) Due To Reasonably Possible Change In Risk Variable, Amount Statement of changes in equity [line items] Statement of changes in equity [line items] Disclosure Of Analysis Of Income And Expense [Table] Disclosure Of Analysis Of Income And Expense [Table] Disclosure Of Analysis Of Income And Expense [Table] Attributable to: Comprehensive income attributable to [abstract] Vesting period of granted awards Key Management Personnel Compensation, Shareholding Guidelines, Vesting Period Key Management Personnel Compensation, Shareholding Guidelines, Vesting Period Increase in RBW NPS Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Increase in RBW NPS Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Increase in RBW NPS Interests in associates Carrying amount Investments in associates reported in separate financial statements Threadneedle Software Holdings Limited Threadneedle Software Holdings Limited [Member] Threadneedle Software Holdings Limited – other structured notes Structured Notes, Other Liabilities [Member] Structured Notes, Other Liabilities [Member] Forecasted Period [Axis] Forecasted Period [Axis] Forecasted Period [Axis] 24 Feb 20 24 Feb 20 [Member] 24 Feb 20 Republic Nominees Limited Republic Nominees Limited [Member] Republic Nominees Limited [Member] Disclosure of geographical areas [table] Disclosure of geographical areas [table] Electronic Data Process México, S.A. de C.V. Electronic Data Process México, S.A. de C.V. [Member] Electronic Data Process México, S.A. de C.V. Deposits by banks and customer accounts Deposits By Banks And Customer Accounts [Member] Deposits By Banks And Customer Accounts [Member] Dividends declared before financial statements authorized for issue Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners Effect on total equity (net) due to decrease in risk variable Increase (decrease) in equity due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17 Temporary differences from investments in subsidiaries and branches Temporary Differences From Investments In Subsidiaries And Branches [Member] Temporary Differences From Investments In Subsidiaries And Branches [Member] Total Total for all consolidated structured entities [member] HSBC Global Asset Management (Deutschland) GmbH HSBC Global Asset Management (Deutschland) GmbH [Member] HSBC Global Asset Management (Deutschland) GmbH [Member] Banco Nominees (Guernsey) Limited Banco Nominees (Guernsey) Limited [Member] Banco Nominees (Guernsey) Limited [Member] Amounts recognised in profit or loss Financial assets at fair value through profit or loss, category [member] Auditor’s remuneration Disclosure Of Auditors' Remuneration [Table Text Block] Disclosure Of Auditors' Remuneration [Table Text Block] Up-to-date Current [member] Exchange differences Increase (decrease) through net exchange differences, intangible assets and goodwill Statement of financial position [abstract] Statement of financial position [abstract] Collateral value Financial Assets, Collateral Financial Assets, Collateral Other operating income/(expense) Other operating income Other operating income (expense) Cover [Abstract] Financial investments Financial Assets At Fair Value Through Other Comprehensive Income And At Amortised Cost Financial Assets At Fair Value Through Other Comprehensive Income And At Amortised Cost Share buy-backs Purchase of own shares Payments to acquire or redeem entity's shares HSBC Global Asset Management (France) HSBC Global Asset Management (France) [Member] HSBC Global Asset Management (France) [Member] HSBC Trustee (Singapore) Limited HSBC Trustee (Singapore) Limited [Member] HSBC Trustee (Singapore) Limited [Member] Maximum Maximum [Member] 3.900% Senior Unsecured Notes due 2026 (US404280BB43) 3.9% Senior Unsecured Notes Due 2026 [Member] 3.9% Senior Unsecured Notes Due 2026 Dividends paid to non-controlling interests Dividends paid to non-controlling interests Change in bps due to reasonably possible favourable changes in key assumptions Increase (Decrease) In Basis Points Due To Reasonably Possible Favourable Changes In Key Assumptions Increase (Decrease) In Basis Points Due To Reasonably Possible Favourable Changes In Key Assumptions Effect of movements in exchange rates Increase (Decrease) Through Exchange Differences, Insurance Contracts Liability (Asset) Increase (Decrease) Through Exchange Differences, Insurance Contracts Liability (Asset) Unused amounts reversed Unused provision reversed, other provisions Capital reallocation to Asia outcome (with CET1 underpin) Share-Based Compensation Arrangement By Share-Based Payment Award, Outcome Of Performance Metric, Capital Reallocation To Asia Share-Based Compensation Arrangement By Share-Based Payment Award, Outcome Of Performance Metric, Capital Reallocation To Asia Assetfinance December (R) Limited (In Liquidation) Assetfinance December (R) Limited [Member] Assetfinance December (R) Limited [Member] Consolidation & Investments in subsidiaries Description of accounting policy for subsidiaries [text block] Net Maximum Exposure To Credit Risk, Net Of Amount Offset Maximum Exposure To Credit Risk, Net Of Amount Offset Retirement Plan Name [Domain] Retirement Plan Name1 [Domain] [Domain] for Retirement Plan Name1 [Axis] 6.800% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (XS2685873908) 6.800% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 [Member] 6.800% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 Alpha Prime Fund Limited Alpha Prime Fund Limited [Member] Alpha Prime Fund Limited Contracts under the modified retrospective approach Increase (decrease) through insurance revenue related to contracts that existed at transition date to which modified retrospective approach has been applied, insurance contracts liability (asset) Disclosure of sensitivity analysis for actuarial assumptions [table] Disclosure of sensitivity analysis for actuarial assumptions [table] Funding Uses [Domain] Funding Uses [Domain] [Domain] for Funding Uses [Axis] Sales Sales, fair value measurement, liabilities $2,350m issued at 6.250% $2,350m 6.250% Perpetual Subordinated Contingent Convertible Securities [Member] $2,350m 6.250% Perpetual Subordinated Contingent Convertible Securities [Member] Entity Shell Company Entity Shell Company HSBC UK Bank plc – WPB HSBC UK Bank plc - WPB [Member] HSBC UK Bank plc - WPB transfers from stage 2 to stage 1 Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Temporary differences related to unrecognised deferred tax liabilities arising on investments in subsidiaries and branches Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised Estimated fees paid by associated third parties Auditor's Remuneration, Estimated Fees Paid By Associated Third Parties Auditor's Remuneration, Estimated Fees Paid By Associated Third Parties Privatization Purchase Consideration Privatization Purchase Consideration [Member] Privatization Purchase Consideration Debt securities in issue Debt Securities, Undiscounted Cash Flows Debt Securities, Undiscounted Cash Flows Schedule of Funding Sources And Funding Uses [Line Items] Schedule of Funding Sources And Funding Uses [Line Items] [Line Items] for Schedule of Funding Sources And Funding Uses [Table] 30 and greater DPD Thirty Days Or Greater Than Thirty Days Past Due [Member] Thirty Days Or Greater Than Thirty Days Past Due [Member] Disclosure of credit risk Disclosure of credit risk [text block] Griffin International Limited (In Liquidation) Griffin International Limited [Member] Griffin International Limited [Member] HSBC Latin America Holdings (UK) Limited HSBC Latin America Holdings (UK) Limited [Member] HSBC Latin America Holdings (UK) Limited [Member] Midland Nominees Limited Midland Nominees Limited [Member] Midland Nominees Limited [Member] Disclosure of reconciliation of changes in insurance contracts by components [table] Disclosure of reconciliation of changes in insurance contracts by components [table] Average RoTE target with CET1 underpin Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Average Return On Equity Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Average Return On Equity – dilution loss on the Group’s investment in BoCom Tax Effect Of Dilution Loss On Investment Tax Effect Of Dilution Loss On Investment Capital redemption reserves reclassification to retained earnings Increase (Decrease) Through Transfer Between Capital Redemption Reserves And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Capital Redemption Reserves And Retained Earnings, Equity Document Fiscal Period Focus Document Fiscal Period Focus Cash and balances with HSBC undertakings – cash at bank with HSBC undertakings Balances with banks 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (US404280ER67) 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 [Member] 5.130% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 5.741% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2036 (US404280FB07) 5.741% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2036 [Member] 5.741% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2036 Total assets Total external assets – total assets Total assets Assets People and culture Measure Of Wider Society [Member] Measure Of Wider Society Banking business in Canada Banking Business In Canada [Member] Banking Business In Canada – other exchange differences Gains (losses) on exchange differences on translation of foreign operations, before tax $1,500m issued at 4.600% $1,500m 4.6% Perpetual Subordinated Contingent Convertible Securities [Member] $1,500m 4.6% Perpetual Subordinated Contingent Convertible Securities Associates [domain] Associates [domain] HSBC Global Services (Hong Kong) Limited HSBC Global Services (Hong Kong) Limited [Member] HSBC Global Services (Hong Kong) Limited [Member] Conditional share awards outstanding at 1 Jan (in shares) Conditional share awards outstanding at 31 Dec (in shares) Number of other equity instruments outstanding in share-based payment arrangement Repurchase agreements – non-trading Repurchase agreements and cash collateral on securities lent Tooley Street View Limited Tooley Street View Limited [Member] Tooley Street View Limited [Member] Current tax Current tax expense (income) and adjustments for current tax of prior periods Disclosure of Lease Receivables Disclosure of maturity analysis of finance lease payments receivable [text block] Reserve of exchange differences on translation and other reserves Reserve Of Exchange Differences On Translation And Other Reserves Reserve Of Exchange Differences On Translation And Other Reserves – Foreign exchange-linked notes Structured Notes, FX-Linked [Member] Structured Notes, FX-Linked [Member] Credit Credit spread Credit risk Credit risk [member] Derivatives, trading liabilities Financial Liabilities At Fair Value Through Profit Or Loss Classified As Held For Trading And Derivatives [Member] Financial Liabilities At Fair Value Through Profit Or Loss Classified As Held For Trading And Derivatives [Member] Other financial liabilities Other Financial Liabilities, Undiscounted Cash Flows Other Financial Liabilities, Undiscounted Cash Flows Advances and credits Unsubordinated mounts due from joint ventures and associates Amounts receivable, related party transactions New issuances Issues, fair value measurement, liabilities Legal provision Legal Provision Expense Legal Provision Expense HSBC Securities Investments (Asia) Limited HSBC Securities Investments (Asia) Limited [Member] HSBC Securities Investments (Asia) Limited [Member] Types of interest rates [axis] Types of interest rates [axis] – net operating income before changes in expected credit losses and other credit impairment charges Revenue Other portfolios Other Portfolios, Assets [Member] Other Portfolios, Assets [Member] Schedule of fees payable by HSBC's associated pension schemes to PwC Disclosure Of Auditor's Remuneration Fees Related To Pension Schemes [Table Text Block] Disclosure Of Auditor's Remuneration Fees Related To Pension Schemes [Table Text Block] Disclosure Of Non-Profit Foundation Disclosure Of Non-Profit Foundation [Text Block] Disclosure Of Non-Profit Foundation Entity Address, City or Town Entity Address, City or Town HFC Bank Limited (In Liquidation) HFC Bank Limited (In Liquidation) [Member] HFC Bank Limited (In Liquidation) Number of economic scenarios Total Number Of Economic Scenarios To Calculate ECL Total Number Of Economic Scenarios To Calculate ECL HSBC Trust Company (Delaware), National Association HSBC Trust Company (Delaware), NationalAssociation [Member] HSBC Trust Company (Delaware), NationalAssociation [Member] Called up share capital Issued capital [member] Insurance finance reserve Reserve of insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss [member] Endorsements and acceptances Bank acceptance liabilities Report of Directors Corporate Governance [Abstract] Report Of Directors Corporate Governance [Abstract] HSBC Professional Services (India) Private Limited HSBC Professional Services (India) Private Limited [Member] HSBC Professional Services (India) Private Limited [Member] – impact of changes in tax rates Tax rate effect from change in tax rate 5.874% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2035 (US404280EL97) 5.874% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2035 [Member] 5.874% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2035 Deferred shares, with performance conditions Deferred Shares, With Performance Conditions [Member] Deferred Shares, With Performance Conditions [Member] Entity Emerging Growth Company Entity Emerging Growth Company Disclosure of scheme interests awarded Disclosure Of Scheme Awards [Table Text Block] Disclosure Of Scheme Awards [Table Text Block] – impact of global and domestic minimum taxes Tax Effect Of Global Minimum Tax Top-Up Charge Tax Effect Of Global Minimum Tax Top-Up Charge HSBC (Guernsey) Focus PCC Limited HSBC (Guernsey) Focus PCC Limited [Member] HSBC (Guernsey) Focus PCC Limited Common equity tier 1 capital: regulatory adjustments [Abstract] Common Equity Tier One Capital Regulator Adjustments [Abstract] Common Equity Tier One Capital Regulator Adjustments HSBC InvestDirect Securities (India) Private Limited HSBC InvestDirect Securities (India) Private Limited [Member] HSBC InvestDirect Securities (India) Private Limited [Member] Portfolio diversification Risk diversification effect [member] Shares issued under HSBC employee share plans (in shares) Number Of Shares Issued Through Share-based Payment Transactions Number Of Shares Issued Through Share-based Payment Transactions Period of retaining shares after vesting Period Of Retaining Shares After Vesting, Other Equity Instruments Vested In Share-Based Payment Arrangement Period Of Retaining Shares After Vesting, Other Equity Instruments Vested In Share-Based Payment Arrangement Precious metals fix-related litigation Precious Metals Fix-Related Litigation [Member] Precious Metals Fix-Related Litigation [Member] – net finance expenses Amounts recognised in OCI Other comprehensive income, before tax, insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss 6.547% Fixed Rate/Floating Rate Subordinated Unsecured Notes due 2034 (US404280DX45) 6.547% Fixed Rate/Floating Rate Subordinated Unsecured Notesdue 2034 [Member] 6.547% Fixed Rate/Floating Rate Subordinated Unsecured Notesdue 2034 Sustainable finance and investment (15%) Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Environment, Sustainable Finance And Investment Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Environment, Sustainable Finance And Investment Accruals, deferred income and other liabilities Accruals And Deferred Income, Highest Amount During The Year Accruals And Deferred Income, Highest Amount During The Year Interests in associates and joint ventures Interests in associates and joint ventures Investments in subsidiaries, joint ventures and associates reported in separate financial statements Disclosure of information about expected recognition of contractual service margin in profit or loss [line items] Disclosure of information about expected recognition of contractual service margin in profit or loss [line items] Silkroad GP Limited Silkroad GP Limited [Member] Silkroad GP Limited Expected credit losses as a percentage of customer advances in the short to medium term Description Of Loan Impairment Charge As Percentage Of Customer Advances In Current Estimate Of Value In Use Description Of Loan Impairment Charge As Percentage Of Customer Advances In Current Estimate Of Value In Use Forecast period Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Forecast Period Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Forecast Period Estimates of present value of future cash flows and risk adjustment Estimates of present value of future cash flows [member] Off-balance sheet commitments received Off-Balance Sheet Commitments Received [Abstract] Off-Balance Sheet Commitments Received [Abstract] 1 Mar 21 1 Mar 21 [Member] 1 Mar 21 HSBC Real Estate Leasing (France) HSBC Real Estate Leasing (France) [Member] HSBC Real Estate Leasing (France) [Member] Effect of contracts initially recognised in the year Disclosure of effect of insurance contracts initially recognised [text block] Weighted average share price, share options granted (in dollars per share) Weighted average share price, share options granted Entity Address, Postal Zip Code Entity Address, Postal Zip Code – financial Balances On Financial Deposits From Customers Balances On Financial Deposits From Customers Disclosure Of Face Statements [Table] Disclosure Of Face Statements [Table] Disclosure Of Face Statements [Table] Shareholding guidelines (number of shares) Key Management Personnel Compensation, Shareholding Guidelines Key Management Personnel Compensation, Shareholding Guidelines Disclosure of nature and extent of risks arising from financial instruments [line items] Disclosure of nature and extent of risks arising from financial instruments [line items] Fees for other services provided to HSBC Auditor's remuneration for other services HSBC Assurances Vie (France) HSBC Assurances Vie (France) [Member] HSBC Assurances Vie (France) [Member] Disclosure of financial assets pledged as collateral which the counterparty has the right to sell or repledge Disclosure Of Financial Assets Pledged As Collateral With Right To Resell [Table Text Block] Disclosure Of Financial Assets Pledged As Collateral With Right To Resell [Table Text Block] HSBC Mexico, S.A., Institucion de Banca Multiple, Grupo Financiero HSBC HSBC Mexico, S.A., Institucion de Banca Multiple, Grupo Financiero HSBC [Member] HSBC Mexico, S.A., Institucion de Banca Multiple, Grupo Financiero HSBC Tax Disclosure of income tax [text block] Other debt securities in issue Other Debt Securities1 [Member] Other Debt Securities1 [Member] HSBC Electronic Data Processing Lanka (Private) Limited HSBC Electronic Data Processing Lanka (Private) Limited [Member] HSBC Electronic Data Processing Lanka (Private) Limited [Member] Asset Carrying Amount [Axis] Asset Carrying Amount [Axis] Asset Carrying Amount [Axis] Gross temporary differences, unused tax losses and unused tax credits for which no deferred tax asset is recognised Deductible Temporary Differences, Unused Tax Losses, And Unused Tax Credits For Which No Deferred Tax Asset Is Recognised Deductible Temporary Differences, Unused Tax Losses, And Unused Tax Credits For Which No Deferred Tax Asset Is Recognised HSBC PI Holdings (Mauritius) Limited HSBC PI Holdings (Mauritius) Limited [Member] HSBC PI Holdings (Mauritius) Limited [Member] Financial assets at amortised cost – financial investments – at amortised cost Financial assets at amortised cost Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Cash margins received Cash Margin Received Subject To Enforceable Master Netting Arrangement Or Similar Agreement Not Set Off Against Financial Assets Cash Margin Received Subject To Enforceable Master Netting Arrangement Or Similar Agreement Not Set Off Against Financial Assets Disclosure of number and weighted average exercise prices of share options Disclosure of number and weighted average exercise prices of share options [text block] Off-balance sheet commitments given Capital commitments [abstract] HASE Wealth Limited HASE Wealth Limited [Member] HASE Wealth Limited – stock lending Stock Lending [Member] Stock Lending [Member] 2.848% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (US404280CH04) 2.848% Fixed/Floating Rate Senior Unsecured Notes Due 2031 [Member] 2.848% Fixed/Floating Rate Senior Unsecured Notes Due 2031 HSBC Securities Services (Guernsey) Limited HSBC Securities Services (Guernsey) Limited [Member] HSBC Securities Services (Guernsey) Limited [Member] Confidence level corresponding to results of technique other than confidence level technique used for determining risk adjustment for non-financial risk Confidence level corresponding to results of technique other than confidence level technique used for determining risk adjustment for non-financial risk Conduits Asset-backed financings [member] HSBC RCF SPV S.à r.l. HSBC RCF SPV S.à r.l. [Member] HSBC RCF SPV S.à r.l. – insurance service expense Total insurance service expenses Insurance service expenses from insurance contracts issued HSBC (BGF) Investments Limited HSBC (BGF) Investments Limited [Member] HSBC (BGF) Investments Limited [Member] Commodity and other Commodity price risk [member] Inmobiliaria Grufin, S.A. de C.V. Inmobiliaria Grufin, S.A. de C.V. [Member] Inmobiliaria Grufin, S.A. de C.V. Effect of dilutive potential ordinary shares (in shares) Dilutive effect of convertible instruments on weighted average number of ordinary shares Disclosure of actual claims compared with previous estimates [line items] Disclosure of actual claims compared with previous estimates [line items] – 81% to 90% LTV 81 To 90 Percent [Member] LTV 81 To 90 Percent [Member] Risk free interest rate, share options granted Risk free interest rate, share options granted Disclosure of performance conditions for long-term incentives Disclosure Of Long-Term Incentive Performance Conditions [Table Text Block] Disclosure Of Long-Term Incentive Performance Conditions [Table Text Block] Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [line items] Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [line items] Downside Scenario , Additional Downside Scenario , Additional [Member] Downside Scenario , Additional Others Reclassification Adjustments On Cash Flow Hedges, Other Reclassification Adjustments On Cash Flow Hedges, Other Net income from financial instruments held for trading or managed on a fair value basis Trading income (expense) Inmobiliaria Guatusi, S.A. de C.V. Inmobiliaria Guatusi, S.A. de C.V. [Member] Inmobiliaria Guatusi, S.A. de C.V. HSBC Global Services (UK) Limited HSBC Global Services (UK) Limited [Member] HSBC Global Services (UK) Limited [Member] Cost of share-based payment arrangements Shares issued under HSBC employee share plans Increase (decrease) through share-based payment transactions, equity Income statement charge for incentive awards Incentive Awards, Net Incentive Awards, Net Foreign exchange and other reserves reclassified Foreign exchange and other reserves reclassified Increase (Decrease) Through Foreign Exchange And Other Reserves Reclassified To Income Statement On Disposal Of A Foreign Operation, Equity Increase (Decrease) Through Foreign Exchange And Other Reserves Reclassified To Income Statement On Disposal Of A Foreign Operation, Equity Saf Baiyun Saf Baiyun [Member] Saf Baiyun [Member] Hedges of net investment in foreign operations Hedges of net investment in foreign operations [member] Number of claims dismissed Loss Contingency, Claims Dismissed, Number 1 Loss Contingency, Claims Dismissed, Number 1 HSBC’s interest percent % of share class held by immediate parent company (or by the Group where this varies) Proportion of ownership interest in associate Common equity tier 1 capital before regulatory adjustments Common Equity Tier One Capital, Before Regulatory Adjustments Common Equity Tier One Capital, Before Regulatory Adjustments HSBC Innovation Bank Limited HSBC Innovation Bank Limited [Member] HSBC Innovation Bank Limited Other benefits Directors Remuneration Expense, Other Benefits Directors Remuneration Expense, Other Benefits Episode Six Inc. Episode Six Inc. [Member] Episode Six Inc. MP Payments Middle East AE L.L.C. (In Liquidation) MP Payments Middle East AE L.L.C. [Member] MP Payments Middle East AE L.L.C. Foreign exchange gain (loss) Foreign exchange gain (loss) – non-deductible bank levy expense Tax Effect Of Domestic Banking Levy Tax Effect Of Domestic Banking Levy Reductions Across Organization Reductions Across Organization [Member] Reductions Across Organization Not collateralised Not Collateralised [Member] Not Collateralised [Member] Retirement obligations Retirement Obligation Related Temporary Differences [Member] Retirement Obligation Related Temporary Differences [Member] Amounts due to joint ventures and associates, highest amount during the year Amounts Payable, Related Party Transactions, Highest Amount During The Year Amounts Payable, Related Party Transactions, Highest Amount During The Year Entity Address, Country Entity Address, Country Total fixed Directors' Remuneration Expense, Fixed Directors' Remuneration Expense, Fixed Disclosure of amounts payable on demand Disclosure of maturity analysis for liquidity risk that arises from contracts within scope of IFRS 17 [text block] MK HoldCo Limited MK HoldCo Limited [Member] MK HoldCo Limited Prepayments, accrued income and other assets Prepayments, Accrued Income And Other Assets, Highest Amount During The Year Prepayments, Accrued Income And Other Assets, Highest Amount During The Year Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [table] Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [table] Major ordinary share transactions Major ordinary share transactions [member] Euro Member Countries, Euro Euro Member Countries, Euro Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Disclosure of reconciliation of changes in intangible assets and goodwill [line items] – income taxes Income tax relating to changes in revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets included in other comprehensive income – special dividend Special Dividend [Member] Special Dividend Risk & compliance modifier Directors Remuneration Expense, Risk and Compliance Modifier Directors Remuneration Expense, Risk and Compliance Modifier Insurance service result Insurance service result Increase (decrease) through insurance service result, insurance contracts liability (asset) HSBC InvestDirect (India) Private Limited HSBC InvestDirect (India) Private Limited [Member] HSBC InvestDirect (India) Private Limited Exercise price discount Share-based Compensation Arrangement By Share-based Payment Award, Discount From Market Price, Offering Date Share-based Compensation Arrangement By Share-based Payment Award, Discount From Market Price, Offering Date Document Annual Report Document Annual Report – other structured notes Other Structured Notes [Member] – return on plan assets (excluding interest income) Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense Disclosure of significant benefits Disclosure Of Significant Benefits [Table Text Block] Disclosure Of Significant Benefits Assetfinance December (P) Limited Assetfinance December (P) Limited [Member] Assetfinance December (P) Limited [Member] Geographical areas [domain] Geographical areas [domain] Fundacion HSBC, A.C. Fundacion HSBC, A.C. [Member] Fundacion HSBC, A.C. [Member] Relative TSR assessment Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Total Shareholder Return Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Total Shareholder Return Life other contracts Insurance Contracts, Life Other Contracts [Member] Insurance Contracts, Life Other Contracts Insurance manufacturing subsidiaries Insurance Manufacturing Subsidiaries [Member] Insurance Manufacturing Subsidiaries [Member] US Government agencies US Government Corporations and Agencies Securities1 [Member] US Government Corporations and Agencies Securities1 [Member] Shareholding guidelines (% of salary) Key Management Personnel Compensation, Shareholding Guidelines, Percentage Of Salary Key Management Personnel Compensation, Shareholding Guidelines, Percentage Of Salary HSBC Global Asset Management (Switzerland) AG HSBC Global Asset Management (Switzerland) AG [Member] HSBC Global Asset Management (Switzerland) AG [Member] Non-current assets held for sale Noncurrent Assets Or Disposal Groups Classified As Held For Sale, Noncurrent Assets Noncurrent Assets Or Disposal Groups Classified As Held For Sale, Noncurrent Assets Financial liabilities designated at fair value Financial Liabilities At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently, Undiscounted Cash Flows Financial Liabilities At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently, Undiscounted Cash Flows Tier 2 capital Tier Two Risk Based Capital 1 Tier Two Risk Based Capital 1 – dilution loss on the Group’s investment in BoCom Tax Rate Effect Of Dilution Loss On Investment Tax Rate Effect Of Dilution Loss On Investment Trading assets Schedules of financial investments Disclosure of financial assets [text block] – treasury bills, other bills and certificates of deposit less than three months Short-term Investments And Deposits, Classified As Cash Equivalents Short-term Investments And Deposits, Classified As Cash Equivalents Total Key Management Personnel Compensation, Fees And Benefits Key Management Personnel Compensation, Fees And Benefits Decrease through subsidiaries classified as held for sale Increase (Decrease) Through Subsidiaries Classified As Held For Sale, Insurance Contracts Liability (Asset) Increase (Decrease) Through Subsidiaries Classified As Held For Sale, Insurance Contracts Liability (Asset) Disclosure of credit risk exposure [table] Disclosure of credit risk exposure [table] Basis of preparation and material accounting policies Disclosure of material accounting policy information [text block] +100 basis point parallel shift in yield curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Parallel Shift In Yield Curves Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Parallel Shift In Yield Curves Disclosure of compliance with regulatory capital requirements under banking regulations Disclosure Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Table Text Block] Disclosure Of Compliance With Regulatory Capital Requirements Under Banking Regulations HSBC Securities (Egypt) S.A.E. (In Liquidation) HSBC Securities (Egypt) S.A.E. (In Liquidation) [Member] HSBC Securities (Egypt) S.A.E. (In Liquidation) 5,000–25,000 Asset Carrying Amount, $5,000,000,001 To $25,000,000,000 [Member] Asset Carrying Amount, $5,000,000,001 To $25,000,000,000 [Member] Other liabilities – other liabilities Other liabilities Financial impact of increase Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption 5.210% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280DG12) 5.210% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 [Member] 5.210% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 Pension Plan Defined benefit pension plans Pension defined benefit plans [member] Loans and advances to customers Loans and advances to customers (net) – loans and advances to customers Loans and advances to customers Loans and advances to customers Repurchase agreements – non-trading Repurchase Agreements And Cash Collateral On Securities Lent, Undiscounted Cash Flows Repurchase Agreements And Cash Collateral On Securities Lent, Undiscounted Cash Flows Disclosure Of Debt Securities In Issue [Abstract] Disclosure Of Debt Securities In Issue [Abstract] Disclosure of Debt Securities In Issue [Abstract] 10% decrease in growth assets Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Equity Prices Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Equity Prices SNCB/M6-2007 A SNCB/M6-2007 A [Member] SNCB/M6-2007 A [Member] Dividends received from associates Dividends received, classified as operating activities Assetfinance September (G) Limited Assetfinance September (G) Limited [Member] Assetfinance September (G) Limited [Member] SNC Les Oliviers D'Antibes SNC Les Oliviers D’Antibes [Member] SNC Les Oliviers D’Antibes [Member] – before income taxes Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans HSBC Private Bank (Luxembourg) S.A. HSBC Private Bank (Luxembourg) S.A. [Member] HSBC Private Bank (Luxembourg) S.A. [Member] – income taxes Income tax relating to remeasurements of defined benefit plans included in other comprehensive income – non-taxable gain on disposal of HSBC Canada – non-taxable income and gains Tax Rate Effect Of Non-Taxable Gain (Loss) On Disposal Of Subsidiary Tax Rate Effect Of Non-Taxable Gain (Loss) On Disposal Of Subsidiary Downside 2 scenario Downside 2 scenario Downside 2 scenario allowance for ECL Downside Two Scenario [Member] Downside Two Scenario 2.1–3.3 CRR 2.1-3.3 [Member] CRR 2.1-3.3 Net amount reclassified to profit or loss Other comprehensive income that will be reclassified to profit or loss, net of tax Merger and other reserves Merger reserve [member] Share options outstanding at beginning of period (in shares) Share options outstanding at end of period (in shares) Number of HSBC Holdings ordinary shares (in shares) Number of options held over HSBC Holdings ordinary shares under employee share plans Share options (in shares) Number of share options outstanding in share-based payment arrangement Dividends recognised for equity instruments held at year end Dividends recognised for investments in equity instruments designated at fair value through other comprehensive income, held at end of reporting period SilkRoad Fund Management S.à.r.l SilkRoad Fund Management S.à.r.l [Member] SilkRoad Fund Management S.à.r.l Valuation techniques used in fair value measurement [axis] Valuation techniques used in fair value measurement [axis] London Precious Metals Clearing Limited London Precious Metals Clearing Limited [Member] London Precious Metals Clearing Limited St Cross Trustees Limited St Cross Trustees Limited [Member] St Cross Trustees Limited [Member] Cost-income ratio Cost Income Ratio [Member] Cost Income Ratio [Member] Pam Kaur Pam Kaur [Member] Pam Kaur 10% appreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Foreign Currency Translation – transfers to stage 3 Increase (Decrease) Through Transfers, Financial Assets, Transfer To Stage 3 Increase (Decrease) Through Transfers, Financial Assets, Transfer To Stage 3 Liabilities and equity Equity and liabilities [abstract] Assets of disposal groups held for sale Disposal Group Assets [Abstract] Disposal Group Assets +100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Shift In Credit Spreads Net fee income Disclosure of fee and commission income (expense) [text block] Net interest income Interest income/(expense) Net interest income Interest income (expense) Entity Filer Category Entity Filer Category Reverse repurchase agreements – non-trading Reverse repurchase agreements – non-trading Reverse repurchase agreements and cash collateral on securities borrowed Due over 2 years but not more than 5 years Later than two years and not later than five years [member] Sustainable finance and investment Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Sustainable Finance And Investment Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Sustainable Finance And Investment HSBC Broking Futures (Hong Kong) Limited HSBC Broking Futures (Hong Kong) Limited [Member] HSBC Broking Futures (Hong Kong) Limited [Member] Total gains/(losses) recognised in other comprehensive income (‘OCI’) Gains (losses) recognised in other comprehensive income including exchange differences, fair value measurement, assets Prudential Client HSBC GIS Nominee (UK) Limited Prudential Client HSBC GIS Nominee (UK) Limited [Member] Prudential Client HSBC GIS Nominee (UK) Limited [Member] Net interest income/(cost) on the net defined benefit asset/(liability) Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income) Disclosure of net income from financial instruments measured at fair value through profit and loss Disclosure Of Income (Expense) From Financial Instruments Measured At At Fair Value [Table Text Block] Disclosure Of Income (Expense) From Financial Instruments Measured At At Fair Value [Table Text Block] Transfers out Transfers out of Level 3 of fair value hierarchy, liabilities 10% increase in growth assets Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Equity Prices Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Equity Prices Amounts relating to changes in liabilities for remaining coverage Insurance revenue, amounts relating to changes in liability for remaining coverage Nominal contract amount of hedging instruments Nominal amount Nominal amount of hedging instrument Operating profit Profit (loss) from operating activities 4.899% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 (US404280EQ84) 4.899% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 [Member] 4.899% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 Number of hearings in early procedural stage Loss Contingency, Number Of Hearings In Early Procedural Stage Loss Contingency, Number Of Hearings In Early Procedural Stage Red Hexagon ETA Master HoldCo Limited Red Hexagon ETA Master HoldCo Limited [Member] Red Hexagon ETA Master HoldCo Limited Year ended 31 Dec Audit of HSBC’s associated pension schemes Auditor's remuneration for audit services Joint Venture And Associates Joint Venture Where Entity Is Venturer And Associates [Member] Joint Venture Where Entity Is Venturer And Associates [Member] Entity Address, Address Line One Entity Address, Address Line One Discontinued operations Discontinued operations [member] Risk-weighted assets as a percentage of total assets in the long term Description Of Risk-Weighted Assets As Percentage Of Total Assets In Future Estimate Of Value In Use Description Of Risk-Weighted Assets As Percentage Of Total Assets In Future Estimate Of Value In Use securitisation swaps Other Derivative Liabilities, Securitisation Swaps [Member] Other Derivative Liabilities, Securitisation Swaps [Member] Current Value/Cost Current estimate of future cash outflows to be paid to fulfil obligation, measurement input [member] Total capital Capital 1 Capital 1 Pentagreen Capital Pte. Ltd Pentagreen Capital Pte. Ltd [Member] Pentagreen Capital Pte. Ltd HSI International Limited HSI International Limited [Member] HSI International Limited [Member] Gains (losses) on insurance investments Gains (Losses) On Insurance Investments Measured At Fair Value Through Other Comprehensive Income, Before Tax Gains (Losses) On Insurance Investments Measured At Fair Value Through Other Comprehensive Income, Before Tax Explanation of effect of share-based payments on entity's profit or loss Explanation of effect of share-based payments on entity's profit or loss [text block] Remittances Remittance Fee And Commission Income Remittance Fee And Commission Income HSBC Asset Finance M.O.G. Holdings (UK) Limited HSBC Asset Finance M.O.G. Holdings (UK) Limited [Member] HSBC Asset Finance M.O.G. Holdings (UK) Limited [Member] Other credit judgements Other Retail Lending Adjustments [Member] Other Retail Lending Adjustments Other contracts Contractual service margin not related to contracts that existed at transition date to which modified retrospective approach or fair value approach has been applied [member] Mobilisation of value streams, percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Mobilisation Of Value Streams, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Mobilisation Of Value Streams, Percentage Dividends Payable [Table] Dividends Payable1 [Table] Dividends Payable1 [Table] Estimate of contributions expected to be paid to plan Estimate of contributions expected to be paid to plan for next annual reporting period Estimate of contributions expected to be paid to plan for next annual reporting period HSBC Global Asset Management Limited HSBC Global Asset Management Limited [Member] HSBC Global Asset Management Limited [Member] Fee expense arising from trust and fiduciary activities Fee Expense Arising From Trust And Fiduciary Activities Fee Expense Arising From Trust And Fiduciary Activities Grupo Financiero HSBC, S. A. de C. V. Grupo Financiero HSBC, S. A. de C. V. [Member] Grupo Financiero HSBC, S. A. de C. V. [Member] Provisions Disclosure of provisions [text block] HSBC Card Services Inc. HSBC Card Services Inc. [Member] HSBC Card Services Inc. [Member] Disclosure of financial assets [table] Disclosure of financial assets [table] 5.790% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 (US404280EX36) 5.790% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 [Member] 5.790% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 – pooled investment vehicles Investment funds, amount contributed to fair value of plan assets Title and Position [Domain] Title and Position [Domain] Canada Banking Business Canada Banking Business [Member] Canada Banking Business [Member] 5.450% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 (US404280ES41) 5.450% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 [Member] 5.450% Fixed Rate/Floating Rate Senior Unsecured Notes due 2036 Cash And Balances At Central Banks Cash And Balances At Central Banks [Member] Cash And Balances At Central Banks [Member] – deductions for AT1 coupon payments Tax Effect Of Deductions For AT1 Coupon Payments Tax Effect Of Deductions For AT1 Coupon Payments other credit derivatives Other credit derivative, liability [Member] Other credit derivative, liability – impact of business disposals Tax Effect Of Business Disposals Tax Effect Of Business Disposals Disclosure of components of goodwill and intangible assets Disclosure Of Components Of Goodwill And Intangible Assets [Table Text Block] Disclosure Of Components Of Goodwill And Intangible Assets [Table Text Block] – insurance finance income/(expense) recognised in other comprehensive income Increase (Decrease) Through Insurance Finance Income (Expense) From Insurance Contracts, Excluded From Profit Or Loss, Equity Increase (Decrease) Through Insurance Finance Income (Expense) From Insurance Contracts, Excluded From Profit Or Loss, Equity Housing (USA) Inc. Housing (USA) Inc. [Member] Housing (USA) Inc. Effect on total equity (net) due to increase in risk variable Increase (decrease) in equity due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17 Opening liabilities Closing liabilities Insurance contracts that are liabilities Long-term asset growth rate Description Of Growth Rate Used To Extrapolate Long-Term Asset Projections In Current Estimate Of Value In Use Growth Rate Used To Extrapolate Long-Term Asset Projections In Current Estimate Of Value In Use Defined benefit pension plans Post-employment benefit expense in profit or loss, defined benefit plans Hedged items [axis] Hedged items [axis] Disclosure of value at risk (VaR) Disclosure Of Value At Risk Explanatory [Table Text Block] Disclosure Of Value At Risk Explanatory [Table Text Block] HSBC Seguros, S.A de C.V., Grupo Financiero HSBC HSBC Seguros, S.A de C.V., Grupo Financiero HSBC [Member] HSBC Seguros, S.A de C.V., Grupo Financiero HSBC SFM SFM [Member] SFM [Member] Fund [Axis] Fund [Axis] Fund HSBC Continental Europe and the Paris branch of HSBC Bank Plc HSBC Continental Europe and the Paris branch of HSBC Bank Plc [Member] HSBC Continental Europe and the Paris branch of HSBC Bank Plc Characteristics of defined benefit plans [domain] Characteristics of defined benefit plans [domain] Change in mortality Actuarial assumption of mortality rates [member] HSBC Portfoy Yonetimi A.S. HSBC Portfoy Yonetimi A.S. [Member] HSBC Portfoy Yonetimi A.S. [Member] Financial liabilities designated at fair value Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] Net finance income/(expenses) from insurance contracts Other comprehensive income, net of tax, insurance finance income (expenses) from insurance contracts issued excluded from profit or loss that will be reclassified to profit or loss Encumbered securities Encumbered Securities Encumbered Securities Loan and other credit-related commitments Gross loan commitments Disclosure of transactions between related parties [line items] Disclosure of transactions between related parties [line items] – audit-related assurance services Auditor's Remuneration For Audit-Related Assurance Services Auditor's Remuneration For Audit-Related Assurance Services Prepayments, accrued income and other assets Prepayments, accrued income and other assets Prepayments, accrued income and other assets Prepayments, Accrued Income And Other Assets Prepayments, Accrued Income And Other Assets Capital reallocation to Asia assessment (with CET1 underpin) Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Capital Reallocation To Asia Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Capital Reallocation To Asia Other comprehensive income/(expense) Other comprehensive income [abstract] Black employee representation % Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Black Heritage Employees At Senior Management Level, Actual, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Black Heritage Employees At Senior Management Level, Actual, Percentage Disclosure of detailed information about hedging instruments [line items] Disclosure of detailed information about hedging instruments [line items] Woodex Limited Woodex Limited [Member] Woodex Limited [Member] CANADA CANADA Accrued income and other financial assets Accrued Income And Other Assets Accrued Income And Other Assets Summarised financial information: Summarised Financial Information [Abstract] Summarised Financial Information [Abstract] Classes of share capital [domain] Classes of share capital [domain] Reclassified to held for sale Decrease through classified as held for sale, intangible assets and goodwill Settlement accounts and items in course of collection from other banks Settlement Account Assets Settlement Account Assets Mainland China CHINA Contact Personnel Email Address Contact Personnel Email Address Audit fees payable to PwC Auditor's Remuneration For Statutory And Subsidiary Audit Services Auditor's Remuneration For Statutory And Subsidiary Audit Services Shares delivered as part of annual incentive award Annual Incentive Award [Member] Annual Incentive Award [Member] AUSTRALIA AUSTRALIA Disclosure of transferred financial assets that are not derecognised in their entirety [table] Disclosure of transferred financial assets that are not derecognised in their entirety [table] Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, assets Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, assets Changes in fair value of other financial instruments mandatorily measured at fair value through profit or loss Gains (losses) on financial assets at fair value through profit or loss, mandatorily measured at fair value – fair value losses/(gains) transferred to the income statement on disposal Reclassification adjustments on financial assets measured at fair value through other comprehensive income, before tax Reclassification adjustments on financial assets measured at fair value through other comprehensive income, before tax Classes of financial liabilities [axis] Classes of financial liabilities [axis] Classes of financial liabilities [domain] Classes of financial liabilities [domain] Change in reverse repurchase agreements – non-trading Adjustments for decrease (increase) in reverse repurchase agreements and cash collateral on securities borrowed Amounts recognised in profit or loss Amounts Recognised In Profit Or Loss [Member] Amounts Recognised In Profit Or Loss Gain on acquisition Gain recognised in bargain purchase transaction Gain recognised in bargain purchase transaction – non-taxable income and gains Tax rate effect of revenues exempt from taxation Total gains/(losses) recognised in other comprehensive income (‘OCI’) Gains (losses) recognised in other comprehensive income including exchange differences, fair value measurement, liabilities The Hongkong and Shanghai Banking Corporation Limited The Hongkong and Shanghai Banking Corporation Limited [Member] The Hongkong and Shanghai Banking Corporation Limited [Member] Fair value of awards (in GBP per share) Share-Based Payment Arrangement, Fair Value of Awards Share-Based Payment Arrangement, Fair Value of Awards CCF Holding (Liban) S.A.L. (In Liquidation) CCF Holding (Liban) S.A.L. (In Liquidation) [Member] CCF Holding (Liban) S.A.L. (In Liquidation) HSBC Bank (Singapore) Limited HSBC Bank Canada [Member] HSBC Bank Canada [Member] Total regulatory adjustments to additional tier 1 capital Additional Tier One Capital, Regulatory Adjustments Additional Tier One Capital, Regulatory Adjustments Derivatives, trading assets and trading liabilities Financial Assets At Fair Value Through Profit Or Loss Classified As Held For Trading And Derivatives [Member] Financial Assets At Fair Value Through Profit Or Loss Classified As Held For Trading And Derivatives [Member] Fair value of plan assets Plan assets [member] Personal lending Personal Lending Sector [Member] Personal Lending Sector [Member] Number of installments Number Of Installments Number Of Installments Financial assets Disclosure of financial assets [abstract] Lease liabilities Lease liabilities Contractual service margin Contractual service margin [member] Insurance service result Insurance service result Insurance service result Investments in equity instruments designated at fair value through other comprehensive income [domain] Investments in equity instruments designated at fair value through other comprehensive income [domain] Total regulatory adjustments to common equity tier 1 Common Equity Tier One Capital, Regulatory Adjustments Common Equity Tier One Capital, Regulatory Adjustments HSBC Holdings B.V. HSBC Holdings B.V. [Member] HSBC Holdings B.V. [Member] Changes in fair value of underlying items of direct participating contracts Gain (Loss) On Change In Fair Value Underlying Items Of Direct Participating Contracts Gain (Loss) On Change In Fair Value Underlying Items Of Direct Participating Contracts Minimum Minimum [Member] Trading assets Trading assets Financial assets at fair value through profit or loss, classified as held for trading, category [member] Increase in high performer attrition Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Increase In High Performer Attrition Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Increase In High Performer Attrition Disclosure of number of other equity instruments Disclosure of number and weighted average exercise prices of other equity instruments [text block] Purchases Purchases, fair value measurement, assets HSBC Bank (Uruguay) S.A. HSBC Bank (Uruguay) S.A. [Member] HSBC Bank (Uruguay) S.A. UAE UNITED ARAB EMIRATES Increase in female leadership representation Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Female Representation At Senior Management Level, Increase (Decrease), Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Female Representation At Senior Management Level, Increase (Decrease), Percentage Called up share capital Issued capital at beginning of period Issued capital at end of period Issued capital Financial instruments Financial instruments subject to enforceable master netting arrangement or similar agreement not set off against financial liabilities Disclosure of issued capital and share premium Disclosure Of Issued Capital And Share Premium [Table Text Block] Disclosure Of Issued Capital And Share Premium [Table Text Block] Estimates of present value of cash inflows Estimates of present value of future cash inflows [member] Proportion of cash flows payable in period Financial Liabilities And Other Contractual Commitments, Undiscounted Cash Flows, Percentage Of Total Financial Liabilities And Other Contractual Commitments, Undiscounted Cash Flows, Percentage Of Total Unused tax losses for which no deferred tax asset recognised Unused tax losses for which no deferred tax asset recognised – other contingent liabilities Other contingent liabilities [member] Other intangible assets Other intangible assets [member] Claims, other insurance service expenses paid and other cash flows Increase (decrease) through incurred claims paid and other insurance service expenses paid for insurance contracts issued excluding insurance acquisition cash flows, insurance contracts liability (asset) Non-statutory accounts Non-Statutory Accounts [Text Block] Non-Statutory Accounts HSBC Technology & Services (USA) Inc. HSBC Technology & Services (USA) Inc. [Member] HSBC Technology & Services (USA) Inc. [Member] HSBC Violet Investments (Mauritius) Limited HSBC Violet Investments (Mauritius) Limited [Member] HSBC Violet Investments (Mauritius) Limited [Member] Oil price per barrel, minimum Oil Price Per Barrel, Minimum Oil Price Per Barrel, Minimum Categories of financial assets [axis] Categories of financial assets [axis] Assetfinance June (D) Limited (In Liquidation) Assetfinance June (D) Limited [Member] Assetfinance June (D) Limited [Member] Non-statutory Accounts [Abstract] Non-statutory Accounts [Abstract] Assets held for sale Non-current assets held for sale [member] Foreign exchange and other adjustments Increase (decrease) through net exchange differences, deferred tax liability (asset) -100 basis point shift in credit spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Shift In Credit Spreads Sensitivity Analysis For Types Of Market Risk, Effect Of One Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Shift In Credit Spreads Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] Percentage of total credit quality (%) Concentration Risk, Percentage2 Concentration Risk, Percentage2 – documentary credits and short-term trade-related transactions Documentary Credits And Short-term Trade-related Transactions [Member] Documentary Credits and Short-term Trade-related Transactions [Member] Number of shares outstanding (in shares) Number of shares outstanding ending balance (in shares) Number of shares outstanding ending balance (in shares) Number of shares outstanding Types of financial liabilities [domain] Types of financial liabilities [domain] Financial liabilities Financial liabilities, beginning balance Financial liabilities, ending balance Financial liabilities Financial liabilities Member of defined benefit plan, number of employees Member Of Defined Benefit Plan, Number Of Employees Member Of Defined Benefit Plan, Number Of Employees Tax expense Tax credit Total tax expense Tax expense (income) – loan and other credit-related commitments Loan And Other Credit-Related Commitments [Member] Loan And Other Credit-Related Commitments [Member] $2,000m issued at 7.050% $2,000m 7.050% Perpetual Subordinated Contingent Convertible Securities [Member] $2,000m 7.050% Perpetual Subordinated Contingent Convertible Securities Hong Kong Hong Kong HONG KONG Proportion of ownership interest in fund Proportion Of Ownership Interest In Fund Proportion Of Ownership Interest In Fund – stage 1 Stage 1 12-month expected credit losses [member] Management's approved financial forecast period Management Financial Forecast, Period Management Financial Forecast, Period Estimates of present value of cash outflows Estimates of present value of future cash 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HSBC Diversified Loan Fund General Partner S.à r.l. [Member] HSBC Diversified Loan Fund General Partner S.à r.l. Contact Personnel Name Contact Personnel Name HSBC Bank (China) Company Limited HSBC Bank (China) Company Limited [Member] HSBC Bank (China) Company Limited [Member] Fair value of hedging liabilities Carrying amount, liabilities Hedging instrument, liabilities 27 Feb 23 27 Feb 23 [Member] 27 Feb 23 Loans and advances to customers growth rate Loans And Advances To Customers Growth Rate [Member] Loans And Advances To Customers Growth Rate Risk adjustment (%) Risk Adjustment [Member] Risk Adjustment France retail banking busines France Retail Banking Business [Member] France Retail Banking Business HSBC Inversiones S.A. HSBC Inversiones S.A. [Member] HSBC Inversiones S.A. 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LLC HSBC Middle East Asset CO. LLC [Member] HSBC Middle East Asset CO. LLC 2.357% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (US404280CK33) 2.357% Fixed/Floating Rate Senior Unsecured Notes Due 2031 [Member] 2.357% Fixed/Floating Rate Senior Unsecured Notes Due 2031 25,000+ Asset Carrying Amount, Over $25,000,000,000 [Member] Asset Carrying Amount, Over $25,000,000,000 [Member] Cash flow hedges Cash flow hedges [member] Reconciliation of average effective tax rate and applicable tax rate [abstract] Reconciliation of average effective tax rate and applicable tax rate [abstract] Transfers in – transfers to stage 3 Transfers into Level 3 of fair value hierarchy, assets Operating expenses Expenses by nature [abstract] 2.251% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 (US404280CX53) 2.251% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 [Member] 2.251% Fixed Rate/Floating Rate Senior Unsecured Notes due 2027 Deferred tax assets Deferred tax assets Non- controlling interests Non-controlling interests [member] – non-controlling interests Comprehensive income, attributable to non-controlling interests Employee monthly savings Share-based Compensation Arrangement, Employee Monthly Savings Share-based Compensation Arrangement, Employee Monthly Savings Document Accounting Standard Document Accounting Standard Types Of Market Risk Portfolios [Axis] Types Of Market Risk Portfolios [Axis] Types Of Market Risk Portfolios [Axis] US tariff rate US Tariff Rate US Tariff Rate Auditor [Line Items] Weighted average remaining contractual life of outstanding share options Weighted average remaining contractual life of outstanding share options Future state architecture providing better end-state, percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Future State Architecture Providing Better End-State, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Future State Architecture Providing Better End-State, Percentage Customer remediation Refunds provision [member] Due over 9 months but not more than 1 year Later Than Nine Months And Not Later Than One Year [Member] Later Than Nine Months And Not Later Than One Year [Member] Disclosure of joint ventures [table] Disclosure of joint ventures [table] HSBC Private Bank (Suisse) SA HSBC Private Bank (Suisse) SA [Member] HSBC Private Bank (Suisse) SA [Member] Floating Rate Senior Unsecured Notes due 2031 (US404280FF11) Floating Rate Senior Unsecured Notes due 2031 (US404280FF11) [Member] Floating Rate Senior Unsecured Notes due 2031 (US404280FF11) Investment components Increase (Decrease) Through Investment Components, Insurance Contracts Liability (Asset) Increase (Decrease) Through Investment Components, Insurance Contracts Liability (Asset) – fair value gains transferred to the income statement on disposal Reclassification adjustments of fair value gain (loss) of associates and joint ventures, before tax Reclassification adjustments of fair value gain (loss) of associates and joint ventures, before tax – bonds fixed income Debt instruments, amount contributed to fair value of plan assets – effect of profits in associates and joint ventures Tax Effect Of Share Of Profit (Loss) Of Equity Accounted Investments Tax Effect Of Share Of Profit (Loss) Of Equity Accounted Investments Savings baseline Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Savings Baseline Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Savings Baseline – actuarial gains/(losses) financial assumptions Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions total return swaps Derivative, Return Swaps, Asset [Member] Derivative, Return Swaps, Asset Fully collateralised by LTV ratio Fully Collateralised [Member] Fully Collateralised [Member] Disclosure of detailed information about financial instruments [line items] Disclosure of detailed information about financial instruments [line items] Additional proportion of ownership interests and voting rights held by non-controlling interest Proportion Of Ownership Interests Held By Noncontrolling Interests, Trading Books Proportion Of Ownership Interests Held By Noncontrolling Interests, Trading Books Sico Limited Sico Limited [Member] Sico Limited [Member] Inflation rate Actuarial assumption of expected rates of inflation [member] Additions during the year (in shares) Number of other equity instruments granted in share-based payment arrangement – corporate and commercial – corporate and commercial Corporate And Commercial Loans Sector [Member] Corporate And Commercial Loans Sector [Member] On Or Off Balance Sheet Risk [Domain] On Or Off Balance Sheet Risk [Domain] [Domain] for On Or Off Balance Sheet Risk [Axis] HSBC Finance Corporation HSBC Finance Corporation [Member] HSBC Finance Corporation [Member] Funds under management Portfolio and other management fee income Legal Entity [Axis] Legal Entity [Axis] Unallocated impairment losses Non Current Assets Or Disposal Groups Classified As Held For Sale, Disposal Groups, Impairment Loss Non Current Assets Or Disposal Groups Classified As Held For Sale, Disposal Groups, Impairment Loss Measures (weighting) Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Measurement Weight, Percentage Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Measurement Weight, Percentage Derivatives Fair value of derivative assets Derivative financial assets $1,000m issued at 4.000% $1,000m 4.0% Perpetual Subordinated Contingent Convertible Securities [Member] $1,000m 4.0% Perpetual Subordinated Contingent Convertible Securities Expected Loan to Value Ratio Expected Loan to Value Ratio Expected Loan to Value Ratio – ordinary shareholders of the parent company Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating basic earnings per share Lapsed In period (in shares) Number Of Other Equity Instruments Lapsed In Share-Based Payment Arrangement Number Of Other Equity Instruments Lapsed In Share-Based Payment Arrangement HSBC Software Development (India) Private Limited HSBC Software Development (India) Private Limited [Member] HSBC Software Development (India) Private Limited [Member] Discount rate Actuarial assumption of discount rates [member] transfers from stage 1 to stage 2 Increase (Decrease) Through Transfers, Financial Assets, Transfers Out Of Stage 1 Into Stage 2 Increase (Decrease) Through Transfers, Financial Assets, Transfers Out Of Stage 1 Into Stage 2 Cash and balances with central banks – cash and balances at central banks Cash And Bank Balances At Central Banks [Member] Cash And Bank Balances At Central Banks [Member] Disclosure of financial liabilities [table] Disclosure of financial liabilities [table] Common equity tier 1 capital Common Equity Tier One Capital 1 Common Equity Tier One Capital 1 HSBC Invoice Finance (UK) Limited HSBC Invoice Finance (UK) Limited [Member] HSBC Invoice Finance (UK) Limited [Member] – actuarial gains/(losses) demographic assumptions Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions Disclosure of financial assets that are either past due or impaired [table] Disclosure of financial assets that are either past due or impaired [table] Assets accepted as collateral and sold or repledged Collateral sold or repledged in absence of default by owner of collateral, at fair value Korea Nova Solar 2 Inc Korea Nova Solar 2 Inc [Member] Korea Nova Solar 2 Inc Commercial paper held by HSBC Corporate debt instruments held Geographical areas [axis] Geographical areas [axis] Consensus upside scenario Upside scenario Consensus Upside scenario allowance for ECL Upside Scenario [Member] Upside Scenario Loans and advances to HSBC undertakings Loans And Advances To Banks, Highest Amount During The Year Loans And Advances To Banks, Highest Amount During The Year HSBC Securities (South Africa) (Pty) Limited HSBC Securities (South Africa) (Pty) Limited [Member] HSBC Securities (South Africa) (Pty) Limited [Member] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Disclosure Of Fair Value Measurement Of Assets And Liabilities [Table] Antidilutive securities (in shares) Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount1 Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount1 Intangible assets Intangible assets other than goodwill GDP growth rate, 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HSBC Capital (USA), Inc. [Member] HSBC Capital (USA), Inc. [Member] Percentile level of stress over a one-year period Percentile Level Of Stress Over A One-Year Period Percentile Level Of Stress Over A One-Year Period HSBC Cayman Limited (In Liquidation) HSBC Cayman Limited (In Liquidation) [Member] HSBC Cayman Limited [Member] – impact of sale of French retail banking business Tax Rate Effect Of Sale Of Disposal Group Tax Rate Effect Of Sale Of Disposal Group Other liabilities – net short positions in securities Other Liabilities, Net Short Positions In Securities [Member] Other Liabilities1 [Member] Segments [domain] Segments [domain] Cash and cash equivalents at 1 Jan Cash and cash equivalents at 31 Dec Total cash and cash equivalents Cash and cash equivalents Dividends Payable [Line Items] Dividends Payable1 [Line Items] [Line Items] for Dividends Payable1 [Table] Rounding level Level Of Rounding Used Level Of Rounding Used Document Information [Table] Document Information [Table] Disclosure Of Offsetting Of Financial Assets (Liabilities) [Table] Disclosure Of Offsetting Of Financial Assets (Liabilities) [Table] Disclosure Of Offsetting Of Financial Assets (Liabilities) [Table] Disclosure of non-adjusting events after reporting period [line items] Disclosure of non-adjusting events after reporting period [line items] Disclosure of detailed information about prepayments, accrued income and other assets Disclosure Of Prepayments And Other Assets [Table Text Block] Disclosure Of Prepayments, Accrued Income And Other Assets [Table Text Block] José Antonio Meade Kuribreña Non-Executive Director, Jose Meade [Member] Non-Executive Director, Jose Meade [Member] Change in financial assets with HSBC undertakings designated and otherwise mandatorily measured at fair value Adjustments For Decrease (Increase) In Loans And Advances To Banks At Fair Value Adjustments For Decrease (Increase) In Loans And Advances To Banks At Fair Value Flandres Contentieux S.A. Flandres Contentieux S.A. [Member] Flandres Contentieux S.A. [Member] Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities Accumulated fair value hedge adjustment remaining in statement of financial position for hedged item that ceased to be adjusted for hedging gains and losses, liabilities Funding Sources [Domain] Funding Sources [Domain] [Domain] for Funding Sources [Axis] Yield used to discount cash flows that do not vary based on returns on underlying items Yield used to discount cash flows that do not vary based on returns on underlying items Barrowgate Limited Barrowgate Limited [Member] Barrowgate Limited [Member] Classes of entity's own equity instruments [domain] Classes of entity's own equity instruments [domain] Financial assets Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements [abstract] Business combinations [axis] Business combinations [axis] Redemption of preference shares and other equity instruments Payments of other equity instruments Aged 60, Female Aged 60, Female [Member] Aged 65, Female [Member] Capital requirements – tier 1 capital adequacy ratio Capital Requirements, Tier 1 Capital Adequacy Ratio [Member] Capital Requirements, Tier 1 Capital Adequacy Ratio [Member] Credit cards Retail Overdrafts And Credit Cards [Member] Retail Overdrafts And Credit Cards [Member] HSBC Corporate Secretary (UK) Limited HSBC Corporate Secretary (UK) Limited [Member] HSBC Corporate Secretary (UK) Limited Sustainable finance and investment actual Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Performance Metric, Sustainable Finance And Investment Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Performance Metric, Sustainable Finance And Investment Financial instruments credit-impaired Financial instruments credit-impaired after purchase or origination [member] Disclosure of analysis of single amount of discontinued operations [line items] Disclosure of analysis of single amount of discontinued operations [line items] Short to medium forecast term Inputs, Assumptions And Estimation Techniques Used To Determine Value In Use, Short To Medium Forecast Term Inputs, Assumptions And Estimation Techniques Used To Determine Value In Use, Short To Medium Forecast Term 4.950% Fixed Rate Senior Unsecured Notes due 2030 (US404280CF48) 4.950% Fixed Rate Senior Unsecured Notes Due 2030 [Member] 4.950% Fixed Rate Senior Unsecured Notes Due 2030 Difference between carrying amount of financial liability and amount contractually required to pay at maturity to holder of obligation, more (less) Difference between carrying amount of financial liability and amount contractually required to pay at maturity to holder of obligation Reconciliation of changes in fair value measurement, assets [abstract] Reconciliation of changes in fair value measurement, assets [abstract] Disposal losses on Markets Treasury repositioning Revenue From Disposal Of Markets Treasury Repositioning Revenue From Disposal Of Markets Treasury Repositioning Operating Segments [Abstract] Operating Segments [Abstract] Operating Segments [Abstract] Non-cumulative third dollar preference shares Non-Cumulative Third Dollar Preference Shares [Member] Non-cumulative Third Dollar Preference Shares [Member] Hong Kong Inland Revenue, Hong Kong1 [Member] Inland Revenue, Hong Kong1 [Member] – income taxes Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income Disclosure of attribution of expenses by nature to their function [table] Disclosure of attribution of expenses by nature to their function [table] Share price appreciation Share Price Appreciation, Value Share Price Appreciation, Value Statement, Scenario [Axis] Statement, Scenario1 [Axis] Statement, Scenario1 [Axis] Disclosure of cash flows payable under financial liabilities by remaining contractual maturities Disclosure of maturity analysis for non-derivative financial liabilities [text block] Tekoma Korea Holdings Limited Tekoma Korea Holdings Limited [Member] Tekoma Korea Holdings Limited Expired during the year (in shares) Number of share options expired in share-based payment arrangement HSBC SDL UK 2020 LendCo S.à r.l.B137 HSBC SDL UK 2020 LendCo S.à r.l.B137 [Member] HSBC SDL UK 2020 LendCo S.à r.l.B137 Disclosure of detailed information about hedging instruments Disclosure of detailed information about hedging instruments [text block] Interest rate Interest rate Interest rate risk [member] HSBC Electronic Data Service Delivery (Egypt) S.A.E HSBC Electronic Data Service Delivery (Egypt) S.A.E [Member] HSBC Electronic Data Service Delivery (Egypt) S.A.E HSBC North America Holdings Inc. HSBC North America Holdings Inc. [Member] HSBC North America Holdings Inc. [Member] Sustainable finance and investment target Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Sustainable Finance And Investment Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric Target, Sustainable Finance And Investment Disclosure of financial assets and liabilities Disclosure Of Financial Assets And Liabilities [Table] Disclosure Of Financial Assets And Liabilities [Table] Dividend income from subsidiaries Dividend income HSBC Private Banking Holdings (Suisse) SA HSBC Private Banking Holdings (Suisse) SA [Member] HSBC Private Banking Holdings (Suisse) SA [Member] – corporate and commercial Loans to corporate entities Percentage receivable for minimum performance Share-Based Payment Arrangement, Percentage Receivable For Minimum Performance Share-Based Payment Arrangement, Percentage Receivable For Minimum Performance Repurchase agreements – non-trading Repurchase Agreement, Non-trading [Member] Repurchase Agreement, Non-trading [Member] 2031-2035 Due over 5 years Later than five years Later than five years [member] – 51% to 75% LTV 51 To 75 Percent [Member] LTV 51 To 75 Percent [Member] Classes of financial assets [domain] Classes of financial assets [domain] Effect on profit after tax (net) due to decrease in risk variable Increase (decrease) in profit (loss) due to reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17 Mortgage Portfolio Mortgage Portfolio [Member] Mortgage Portfolio Items in the course of transmission to other banks Items in course of transmission to other banks New issuances Issues, fair value measurement, assets Compliance with International Financial Reporting Standards Statement of IFRS compliance [text block] Expiration within 10 years Not Later Than Ten Years [Member] Not Later Than Ten Years [Member] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Critical estimates and judgements Disclosure of accounting judgements and estimates [text block] HSBC Trustee (Guernsey) Limited HSBC Trustee (Guernsey) Limited [Member] HSBC Trustee (Guernsey) Limited [Member] 5.597% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280EF20) 5.597% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 [Member] 5.597% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 Change in risk adjustment for non-financial risk expired Increase (decrease) through change in risk adjustment for non-financial risk that does not relate to future or past service, insurance contracts liability (asset) Intangible Assets [Abstract] Intangible Assets [Abstract] Intangible Assets [Abstract] Auditor Name Auditor Name Premiums received Increase (decrease) through premiums received for insurance contracts issued, insurance contracts liability (asset) R/CLIP Corp. R/CLIP Corp. [Member] R/CLIP Corp. [Member] Aggregate continuing and discontinued operations Aggregate continuing and discontinued operations [member] HSBC Life (Tsing Yi Industrial) Limited HSBC Life (Tsing Yi Industrial) Limited [Member] HSBC Life (Tsing Yi Industrial) Limited Segment consolidation items [domain] Segment consolidation items [domain] Weighting (%) Weighting Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives Weighting Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives HSBC Broking Forex (Asia) Limited HSBC Broking Forex (Asia) Limited [Member] HSBC Broking Forex (Asia) Limited [Member] HSBC Master Trust Trustee Limited (In Liquidation) HSBC Master Trust Trustee Limited (In Liquidation) [Member] HSBC Master Trust Trustee Limited (In Liquidation) Disclosure of information about unconsolidated structured entities Disclosure of unconsolidated structured entities [text block] Total employee benefit assets (within Note 22 ‘Prepayments, accrued income and other assets’) – prepayments, accrued income and other assets Prepayments, Accrued Income, And Other Assets [Member] Prepayments, Accrued Income, And Other Assets [Member] – performance and other guarantees Performance And Other Guarantee Contracts Performance And Other Guarantee Contracts [Member] Performance And Other Guarantee Contracts [Member] HSBC Securities Services (Bermuda) Limited HSBC Securities Services (Bermuda) Limited [Member] HSBC Securities Services (Bermuda) Limited [Member] HSBC BANK (CHILE) HSBC BANK (CHILE) [Member] HSBC BANK (CHILE) Goodwill Goodwill [member] Loans and advances to customers, including loan commitments and financial guarantees Loans And Advances To Customers, Including Loan Commitments And Financial Guarantees [Member] Loans And Advances To Customers, Including Loan Commitments And Financial Guarantees [Member] Other equity instruments Other equity interest Other equity interest [member] House price growth, 5-year average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, House Price Growth, Five Year Average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, House Price Growth, Five Year Average Not subject to expiration No Maturity [Member] No Maturity [Member] Tier 2 securities Tier Two Securities [Member] Tier Two Securities Net cash from operating activities Cash flows from (used in) operating activities HSBC ASIA LIVING REAL ESTATE GP S.À R.L. HSBC ASIA LIVING REAL ESTATE GP S.À R.L. [Member] HSBC ASIA LIVING REAL ESTATE GP S.À R.L. Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Non-current Assets Held For Sale And Discontinued Operations [Abstract] Non-current Assets Held For Sale And Discontinued Operations [Abstract] Non-current Assets Held For Sale And Discontinued Operations [Abstract] Interest in associates and joint ventures Structured entities HSBC Holdings' subsidiaries, funds, joint ventures and associates Disclosure of interests in other entities [text block] Assets held for sale, liabilities of disposal groups held for sale and business acquisitions Disclosure of non-current assets held for sale and discontinued operations [text block] Entity [Domain] Entity [Domain] Miscellaneous other operating income Miscellaneous other operating income Insurance contracts [axis] Insurance contracts [axis] Disclosure Of Analysis Of Income And Expense [Line Items] Disclosure Of Analysis Of Income And Expense [Line Items] [Line Items] for Disclosure Of Analysis Of Income And Expense [Table] Plan Name1 [Axis] Plan Name1 [Axis] Plan Name1 [Axis] Reversal of impairment loss recognised in other comprehensive income Reversal of impairment loss recognised in other comprehensive income Foreign exchange options Other Derivative Assets, Foreign Exchange Options [Member] Other Derivative Assets, Foreign Exchange Options [Member] Document Fiscal Year Focus Document Fiscal Year Focus Assets held for sale Non-Current Financial Assets Or Disposal Groups Classified As Held For Sale Non-Current Financial Assets Or Disposal Groups Classified As Held For Sale Adjustments for non-cash items: Adjustments to reconcile profit (loss) [abstract] Electronic Payment Services Company (Hong Kong) Limited Electronic Payment Services Company (Hong Kong) Limited [Member] Electronic Payment Services Company (Hong Kong) Limited Sensitivity of VIU to reasonably possible changes in key assumptions Disclosure Of 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interpretations [text block] Financial guarantee contracts Description of accounting policy for financial guarantees [text block] Debt securities in issue Disclosure Of Detailed Information About Debt Securities In Issue Explanatory [Table Text Block] Disclosure Of Detailed Information About Debt Securities In Issue Explanatory [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type1 [Domain] [Domain] for Concentration Risk Type1 [Axis] Trading liabilities Financial Liabilities At Fair Value Through Profit Or Loss Classified As Held For Trading, Undiscounted Cash Flows Financial Liabilities At Fair Value Through Profit Or Loss Classified As Held For Trading, Undiscounted Cash Flows High performer attrition % Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, High Performer Attrition Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, High Performer Attrition Disclosure of Funds [Line Items] Disclosure of Funds [Line Items] Disclosure of Funds [Line Items] Post-employment benefit plan assets under management of subsidiary Liability (Asset) Of Defined Benefit Plans Managed By Related Party Liability (Asset) Of Defined Benefit Plans Managed By Related Party We Trade Innovation Designated Activity Company (In Liquidation) We Trade Innovation Designated Activity Company (In Liquidation) [Member] We Trade Innovation Designated Activity Company (In Liquidation) Change in VIU due to reasonably possible favourable changes in key assumptions Reversal Of Impairment / Value In Use Headroom Of Investments In Associates Due To Reasonably Possible Favourable Changes In Key Assumptions Reversal Of Impairment / Value In Use Headroom Of Investments In Associates Due To Reasonably Possible Favourable Changes In Key Assumptions Diversified Loan Fund – Direct Lending B S.a.r.l Diversified Loan Fund – Direct Lending B S.a.r.l [Member] Diversified Loan Fund – Direct Lending B S.a.r.l Total Key management personnel compensation HSBC Capital Funding 1 LP HSBC Capital Funding (Dollar 1) LP [Member] HSBC Capital Funding (Dollar 1) LP Disclosure Of Other Equity [Table] Disclosure Of Other Equity [Table] Disclosure Of Other Equity [Table] HSBC Private Bank (UK) Limited HSBC Private Bank (UK) Limited [Member] HSBC Private Bank (UK) Limited [Member] Other movements recognised in the statement of profit or loss Other Increase (Decrease), Insurance Contracts Liability (Asset) Other Increase (Decrease), Insurance Contracts Liability (Asset) Risk-weighted assets as a percentage of total assets Risk-Weighted Assets As Percentage Of Total Assets [Member] Risk-Weighted Assets As Percentage Of Total Assets [Member] Hong Kong And Mainland China Hong Kong And Mainland China [Member] Hong Kong And Mainland China Disclosure of initial application of standards or interpretations [table] Disclosure of initial application of standards or interpretations [table] Disaggregation of insurance contracts [axis] Disaggregation of insurance contracts [axis] Vesting Tranche 2 Vesting Tranche Two [Member] Vesting Tranche Two Characteristics of defined benefit plans [axis] Characteristics of defined benefit plans [axis] Risk adjustment for non-financial risk Risk adjustment for non-financial risk [member] Fund [Domain] Fund [Domain] Fund [Domain] Hang Seng Indexes (Netherlands) B.V. Hang Seng Indexes (Netherlands) B.V. [Member] Hang Seng Indexes (Netherlands) B.V. Disclosure of unconsolidated structured entities [table] Disclosure of unconsolidated structured entities [table] Change in other assets Adjustments for decrease (increase) in other assets long-dated single stock options Other Derivative Assets, Long-Dated Single Stock Options [Member] Other Derivative Assets, Long-Dated Single Stock Options [Member] Inflation (annual average growth rate, %) Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Inflation Rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Inflation Rate Loans Loans, Liabilities [Member] Loans, Liabilities Unemployment rate, 5-year average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Unemployment Rate, Five Year Average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Unemployment Rate, Five Year Average Maximum value of shares per employee per quarter Share-based Compensation Arrangement By Share-based Payment Award, Maximum Value Of Shares Per Employee Per Quarter Share-based Compensation Arrangement by Share-based Payment Award, Maximum Value of Shares Per Employee Per Quarter US Treasury US Treasury Securities1 [Member] US Treasury Securities1 [Member] – impact of hyperinflation Tax Effect Of Hyperinflation Impact Tax Effect Of Hyperinflation Impact Performance period Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period Endorsements and acceptances Bank acceptance assets Retirement Plan, Name [Axis] Retirement Plan Name1 [Axis] Retirement Plan Name1 [Axis] – accounting gain on acquisition of SVB UK Tax Effect Of Gain On Acquisitions Tax Effect Of Gain On Acquisitions – exchange differences Gains (losses) on exchange differences on translation of foreign operations, net of tax Gains (losses) on exchange differences on translation of foreign operations, net of tax Local Phone Number Local Phone Number Insurance finance expense Amounts recognised in profit or loss Insurance finance expense Insurance finance income (expenses) from insurance contracts issued recognised in profit or loss – second interim dividend Second Interim Dividend [Member] Second Interim Dividend – other comprehensive income reclassified to the income statement on disposal of interest in an associate Reclassification adjustments of other comprehensive income of associates and joint ventures Reclassification adjustments of other comprehensive income of associates and joint ventures Financial guarantees Financial Guarantee Contracts, Undiscounted Cash Flows Financial Guarantee Contracts, Undiscounted Cash Flows Long-term effective tax rate Long-Term Effective Tax Rate [Member] Long-Term Effective Tax Rate [Member] Gains (losses) on hedges of net investments in foreign operations, before tax Losses on hedges of net investments in foreign operations, before tax Gains (losses) on hedges of net investments in foreign operations, before tax Rest of the Group Rest Of The Group [Member] Rest Of The Group Critical Estimates And Judgements Critical Estimates And Judgements [Table Text Block] Critical Estimates And Judgements Outcome Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives Additional proportion of ownership interest in subsidiary Proportion Of Ownership Interest In Subsidiary, Trading Books Proportion Of Ownership Interest In Subsidiary, Trading Books Others Other Equity Instruments [Member] Other Equity Instruments [Member] Sub-standard Sub-standard1 [Member] Sub-standard1 [Member] Total incentives awarded and recognised in the current year Current Year Incentive Awards Recognized Current Year Incentive Awards Recognized – financial assets at fair value through other comprehensive income Financial assets measured at fair value through other comprehensive income HSBC Global Asset Management Holdings (Bahamas) Limited HSBC Global Asset Management Holdings (Bahamas) Limited [Member] HSBC Global Asset Management Holdings (Bahamas) Limited [Member] Executive Officer Executive Officer [Member] Litigation Closed Litigation Closed [Member] Litigation Closed Within 12 years Within 12 Years [Member] Within 12 Years 25 Feb 19 25 Feb 19 [Member] 25 Feb 19 Total variable Directors' Remuneration Expense, Variable Directors' Remuneration Expense, Variable Securities lending agreements Securities lending [member] Intelligent Processing Solution Limited Intelligent Processing Solution Limited [Member] Intelligent Processing Solution Limited Entity Voluntary Filers Entity Voluntary Filers Impairment loss recognised in profit or loss Impairment Impairment Impairment loss recognised in profit or loss Percentage of share class held by immediate parent company (or by the Group) where this varies Proportion of ownership interest in subsidiary Disposal of major subsidiary Disposal of major subsidiary [member] Carrying amount for these contracts Estimates of present value of future cash outflows (inflows) that arise from contracts within scope of IFRS 17 that are liabilities – other trading liabilities Other Trading Liabilities [Member] Other Trading Liabilities [Member] Tekoma Energy Korea Inc Tekoma Energy Korea Inc [Member] Tekoma Energy Korea Inc Gender representation in leadership Measure Of Gender Representation In Leadership [Member] Measure Of Gender Representation In Leadership Entity Registrant Name Entity Registrant Name HSBC SDL UK II HoldCo S.à r.l. HSBC SDL UK II HoldCo S.à r.l. [Member] HSBC SDL UK II HoldCo S.à r.l. Basic earnings per ordinary share (in dollars per share) Basic earnings per share (in dollars per share) Basic earnings (loss) per share Elimination of exchange differences Adjustments for unrealised foreign exchange losses (gains) Unearned finance income Unearned finance income relating to finance lease payments receivable Measurement [axis] Measurement [axis] Sun Hung Kai Development (Lujiazui III) Limited Sun Hung Kai Development (Lujiazui III) Limited [Member] Sun Hung Kai Development (Lujiazui III) Limited [Member] Securities called upon Securities Called Upon [Member] Securities Called Upon 6.161% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 (US404280DU06) 6.161% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 [Member] 6.161% Fixed Rate/Floating Rate Senior Unsecured Notes due 2029 Total taxable and non-taxable benefits Total taxable and non-taxable benefits Directors Renumeration Expense, Taxable And Nontaxable Benefits Directors Renumeration Expense, Taxable And Nontaxable Benefits – effect of profits in associates and joint ventures Tax Rate Effect Of Share Of Profit (Loss) Of Equity Accounted Investments Tax Rate Effect Of Share Of Profit (Loss) Of Equity Accounted Investments HSBC Climate Growth Partners GP S.à r.l. HSBC Climate Growth Partners GP S.à r.l. [Member] HSBC Climate Growth Partners GP S.à r.l. HSBC Insurance (Bermuda) Limited HSBC Insurance (Bermuda) Limited [Member] HSBC Insurance (Bermuda) Limited [Member] Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations Consolidated structured entities [axis] Consolidated structured entities [axis] Offset Maximum Exposure To Credit Risk, Amount Offset Maximum Exposure To Credit Risk, Amount Offset Disclosure of associates [table] Disclosure of associates [table] Disclosure of offsetting of financial assets [table] Disclosure of offsetting of financial assets [table] Energy [Axis] Energy [Axis] Tax rate effect of disposal of interest in subsidiary Tax Rate Effect Of Gain (Loss) On Disposal Of Interest In Subsidiary Tax Rate Effect Of Gain (Loss) On Disposal Of Interest In Subsidiary Share-based payment expense – share-based payment expense Adjustments for share-based payments Participant Current Demographic [Axis] Participant Current Demographic [Axis] Participant Current Demographic [Axis] Changes due to modifications not derecognised Increase (Decrease) Through Changes To Risk Parameters, Modifications Not Derecognised, Financial Assets Increase (Decrease) Through Changes To Risk Parameters, Modifications Not Derecognised, Financial Assets Estimated financial effect of contingent liabilities Guarantees and other contingent liabilities Estimated financial effect of contingent liabilities Disclosure of offsetting of financial assets and financial liabilities Disclosure of offsetting of financial assets and financial liabilities [text block] Wholesale Wholesale Lending Sector [Member] Wholesale Lending Sector [Member] Subordinated liabilities Subordinated Liabilities, Undiscounted Cash Flows Subordinated Liabilities, Undiscounted Cash Flows Net amount Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements Hang Seng Security Management Limited Hang Seng Security Management Limited [Member] Hang Seng Security Management Limited [Member] Types of financial assets [axis] Types of financial assets [axis] Non-controlling interests Accumulated non-controlling interests of the subsidiary Non-controlling interests Debt securities Debt securities in issue Debt securities in issue Debt securities [member] – fair value gains/(losses) – financial investments: fair value gains/(losses) Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax West Texas Intermediate oil West Texas Intermediate Oil [Member] West Texas Intermediate Oil Liabilities, highest amount during the year Liabilities, Highest Amount During The Year [Abstract] Liabilities, highest amount during the year [Abstract] Loan and other credit-related commitments Loan And Other Credit Related Commitments Received Loan And Other Credit Related Commitments Received Segment consolidation items [axis] Segment consolidation items [axis] $1,150m issued at 6.950% $1,150m 6.950% Perpetual Subordinated Contingent Convertible Securities [Member] $1,150m 6.950% Perpetual Subordinated Contingent Convertible Securities Disclosure of reconciliation of changes in intangible assets and goodwill Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Depreciation, amortisation and impairment – depreciation, amortisation and impairment/expected credit losses Adjustments for depreciation and amortisation expense and impairment loss (reversal of impairment loss) recognised in profit or loss All Currencies [Domain] All Currencies [Domain] Foreign exchange options Other Derivative Liabilities, Foreign Exchange Options [Member] Other Derivative Liabilities, Foreign Exchange Options [Member] Disclosure of fair value measurement of assets Fair values of financial instruments not carried at fair value and bases of valuation - assets Disclosure of fair value measurement of assets [text block] Sustainable finance and investment assessment Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Sustainable Finance And Investment Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Sustainable Finance And Investment Prepayment rate Constant prepayment rate, measurement input [member] Present value Net investment in finance lease HSBC Overseas Investments Corporation (New York) HSBC Overseas Investments Corporation (New York) [Member] HSBC Overseas Investments Corporation (New York) [Member] Experience adjustments Increase (decrease) through experience adjustments, insurance contracts liability (asset) Statement, Scenario [Domain] Statement, Scenario1 [Domain] [Domain] for Statement, Scenario1 [Axis] Summary of net fee income Disclosure Of Major Components Of Net Fee And Commission Income (Expense) [Table Text Block] Disclosure Of Major Components Of Net Fee Income [Table Text Block] ECL Economic Scenario [Axis] ECL Economic Scenario [Axis] ECL Economic Scenario HSBC Asset Finance (UK) Limited HSBC Asset Finance (UK) Limited [Member] HSBC Asset Finance (UK) Limited [Member] Exchange differences Increase (decrease) in net defined benefit liability (asset) resulting from changes in foreign exchange rates, net defined benefit liability (asset) Contracts initially recognised in the year Total Increase (decrease) through effects of contracts initially recognised in period, insurance contracts liability (asset) Increase (decrease) in financial assets [abstract] Increase (decrease) in financial assets [abstract] Change in financial liabilities designated at fair value Adjustments for increase (decrease) in financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently Vesting percentage Vesting Percentage, Perfomance Conditions Assessed And Confirmed, Other Equity Instruments Outstanding In Share-Based Payment Arrangement Vesting Percentage, Perfomance Conditions Assessed And Confirmed, Other Equity Instruments Outstanding In Share-Based Payment Arrangement South Africa South Africa Business [Member] South Africa Business HSBC Life (UK) Limited and HSBC Assurances Vie (France) HSBC Life (UK) Limited and HSBC Assurances Vie (France) [Member] HSBC Life (UK) Limited and HSBC Assurances Vie (France) Hedging gains (losses) for hedge of group of items with offsetting risk positions Hedging gains (losses) for hedge of group of items with offsetting risk positions Disclosure of interest in funds Disclosure of interest in funds [text block] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Disclosure of fair value of plan assets Disclosure of fair value of plan assets [text block] Disclosure of other provisions rollforward Disclosure of other provisions [text block] Female leadership representation % Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Female Representation At Senior Management Level, Actual, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Female Representation At Senior Management Level, Actual, Percentage Change in repurchase agreements – non-trading Adjustments for increase (decrease) in repurchase agreements and cash collateral on securities lent Disclosure of significant unobservable inputs used in fair value measurement of liabilities Disclosure of significant unobservable inputs used in fair value measurement of liabilities [text block] Disaggregation of insurance contracts [domain] Disaggregation of insurance contracts [domain] Carbon reduction (own emissions) (5%) Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Environment, Carbon Reduction Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Metric, Environment, Carbon Reduction Disclosure of offsetting of financial assets [line items] Disclosure of offsetting of financial assets [line items] Cash in lieu of pension Directors Remuneration Expense, Cash In Lieu Of Pension Directors Remuneration Expense, Cash In Lieu Of Pension Foreign exchange volatility Foreign Exchange Volatility, Measurement Input [Member] Foreign Exchange Volatility, Measurement Input [Member] Social security costs Social security contributions HSBC Bank USA, N.A. HSBC Bank USA, N.A. [Member] HSBC Bank USA, N.A. [Member] Georges Elhedery Georges Elhedery [Member] Imenson Limited Imenson Limited [Member] Imenson Limited [Member] Restructuring costs Restructuring provision [member] Annual change in management judgmental adjustments Increase (Decrease) In Financial Assets, Movement Increase (Decrease) In Financial Assets, Movement Change in expected credit losses and other credit impairment charges Change in expected credit losses and other credit impairment charges ECL Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Loans Impairment Charges And Other Risk Provisions Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Loans Impairment Charges And Other Risk Provisions Share premium Share premium [member] Other Other Consolidated Structured Entities [Member] Other Consolidated Structured Entities [Member] – impact of global and domestic minimum taxes Tax Rate Effect Of Global Minimum Tax Top-Up Charge Tax Rate Effect Of Global Minimum Tax Top-Up Charge HSBC Service Delivery (Polska) Sp. z o.o. HSBC Service Delivery (Polska) Sp. z o.o. [Member] HSBC Service Delivery (Polska) Sp. z o.o. Financial assets pledged as collateral Financial assets pledged as collateral for liabilities or contingent liabilities 10 to 15 years Later than ten years and not later than fifteen years [member] SGD 800m issued at 5.000% SGD 800m 5.000% Perpetual Subordinated Contingent Convertible Securities [Member] SGD 800m 5.000% Perpetual Subordinated Contingent Convertible Securities Awards vesting, number of equal tranches Awards Vesting, Number Of Equal Tranches Awards Vesting, Number Of Equal Tranches Vesting1 [Domain] Vesting1 [Domain] [Domain] for Vesting1 [Axis] Total liabilities – total liabilities Liabilities Award Date1 [Axis] Award Date1 [Axis] Award Date1 [Axis] Banking business in Canada and Argentina business Banking Business In Canada And Argentina Business [Member] Banking Business In Canada And Argentina Business MP Payments UK Limited MP Payments UK Limited [Member] MP Payments UK Limited Deposits by banks Deposits By Banks [Member] Deposits By Banks [Member] – cash and cash equivalents held for sale Cash and cash equivalents classified as part of disposal group held for sale Change in discount rate from prior year Increase (Decrease) In Discount Rate Increase (Decrease) In Discount Rate HSBC Saudi Arabia, Closed Joint Stock Company HSBC Saudi Arabia, Closed Joint Stock Company [Member] HSBC Saudi Arabia, Closed Joint Stock Company 6.5% Subordinated Notes 2037 (US404280AH22) 6.5% Subordinated Notes Due September 2037 [Member] 6.5% Subordinated Notes Due September 2037 [Member] Housing (USA) Inc. HSBC Argentina Holdings S.A. [Member] HSBC Argentina Holdings S.A. [Member] Group Chief Executive Group Chief Executive [Member] Group Chief Executive [Member] Disclosure of cash flows payable under derivative financial liabilities by remaining contractual maturities Disclosure of maturity analysis for derivative financial liabilities [text block] Financial assets excluding equity securities Financial Assets Excluding Equity Securities [Member] Financial Assets Excluding Equity Securities [Member] Disclosure of net defined benefit liability (asset) [line items] Disclosure of net defined benefit liability (asset) [line items] Effect on CSM due to decrease in risk variable Increase (Decrease) In Contractual Service Margin Due To Reasonably Possible Decrease In Risk Variable That Arises From Contracts Within Scope Of IFRS 17 Increase (Decrease) In Contractual Service Margin Due To Reasonably Possible Decrease In Risk Variable That Arises From Contracts Within Scope Of IFRS 17 Vesting Tranche 1 Vesting Tranche One [Member] Vesting Tranche One – other changes Gain (Loss) On Other Changes In Remeasurement Of Net Defined Benefit Liability (Asset) Gain (Loss) On Other Changes In Remeasurement Of Net Defined Benefit Liability (Asset) HSBC Life (International) Ltd HSBC Life (International) Limited [Member] HSBC Life (International) Limited [Member] Disclosure of fair value of plan assets [line items] Disclosure of fair value of plan assets [line items] Disclosure of information for cash-generating units [table] Disclosure of information for cash-generating units [table] Shareholdings, options and other securities of key management personnel (in shares) Number Of Share Options And Shares Held In Entity By Subsidiaries Or Associates Number Of Share Options And Shares Held In Entity By Subsidiaries Or Associates Disclosure of information about consolidated structured entities [table] Disclosure of information about consolidated structured entities [table] Insurance contracts Description of accounting policy for insurance contracts and related assets, liabilities, income and expense [text block] Disclosure of nature and extent of risks arising from financial instruments [table] Disclosure of nature and extent of risks arising from financial instruments [table] Non-interest income and expense Description Of Accounting Policy For Non-Interest Income And Expense Explanatory [Policy Text Block] Description Of Accounting Policy For Non-Interest Income And Expense Explanatory [Policy Text Block] 4.300% Senior Unsecured Notes due 2026 (US404280AW98) 4.3% Senior Unsecured Notes Due 2026 [Member] 4.3% Senior Unsecured Notes Due 2026 Weighted average holding period of granted awards Key Management Personnel Compensation, Shareholding Guidelines, Weighted Average Holding Period Key Management Personnel Compensation, Shareholding Guidelines, Weighted Average Holding Period – financial guarantees Financial guarantee contracts [member] Financial assets pledged as collateral which the counterparty has the right to sell or repledge Financial Assets Pledged As Collateral For Liabilities Or Contingent Liabilities, Permitted To Be Sold Or Pledged Financial Assets Pledged As Collateral For Liabilities Or Contingent Liabilities, Permitted To Be Sold Or Pledged Forfeited during the year (in GBP per share) Weighted average exercise price of share options forfeited in share-based payment arrangement 500–2,000 Asset Carrying Amount, $500,000,001 To $2,000,000,000 [Member] Asset Carrying Amount, $500,000,001 To $2,000,000,000 [Member] Unused tax losses and tax credits Unused Tax Losses And Unused Tax Credits [Member] Unused Tax Losses And Unused Tax Credits [Member] Downside scenario Downside Scenario [Member] Downside Scenario HSBC Client Holdings Nominee (UK) Limited HSBC Client Holdings Nominee (UK) Limited [Member] HSBC Client Holdings Nominee (UK) Limited [Member] HSBC Global Services (Canada) Limited HSBC Global Services (Canada) Limited [Member] HSBC Global Services (Canada) Limited [Member] – for this year Current tax expense (income) Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Discount rate Discount Rate [Member] Discount Rate [Member] Vesting Tranche 3 Vesting Tranche Three [Member] Vesting Tranche Three Relative TSR actual Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Performance Metric, Total Shareholder Return Share-Based Compensation Arrangement By Share-Based Payment Award, Actual Performance Metric, Total Shareholder Return Wayfoong (Asia) Limited Wayfoong (Asia) Limited [Member] Wayfoong (Asia) Limited 10% depreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On CSM, Foreign Currency Translation Equity attributable to shareholders less other equity instruments Share Of Total Shareholders' Equity Of Associates, Excluding Other Equity Instruments Share Of Total Shareholders' Equity Of Associates, Excluding Other Equity Instruments Settlements Settlements, fair value measurement, assets – non-deductible bank levy expense Tax Rate Effect Of Domestic Banking Levy Tax Rate Effect Of Domestic Banking Levy Legal proceedings and regulatory matters Legal proceedings provision [member] 3–4 years 2029 Later than three years and not later than four years [member] Economic factors Economic Factors [Member] Economic Factors Turnsonic (Nominees) Limited Turnsonic (Nominees) Limited [Member] Turnsonic (Nominees) Limited [Member] – other equity holders Profit (Loss) Attributable To Other Equity Holders Of Parent Entity Profit (Loss) Attributable To Other Equity Holders Of Parent Entity Total regulatory adjustments to tier 2 capital Tier Two Risk Based Capital, Regulatory Adjustments Tier Two Risk Based Capital, Regulatory Adjustments Loans and advances to banks Loans And Advances To Banks Loans And Advances To Banks [Member] Loans And Advances To Banks [Member] HSBC Global Asset Management (Malta) Limited HSBC Global Asset Management (Malta) Limited [Member] HSBC Global Asset Management (Malta) Limited [Member] Assets and liabilities classified as held for sale [axis] Assets and liabilities classified as held for sale [axis] Fee expense arising from financial liabilities not at fair value through profit or loss Fee expense arising from financial liabilities not at fair value through profit or loss Joint ventures [axis] Joint ventures [axis] Concentration Risk Type [Axis] Concentration Risk Type1 [Axis] Concentration Risk Type1 [Axis] Due over 6 months but not more than 9 months Later Than Six Months And Not Later Than Nine Months [Member] Later Than Six Months And Not Later Than Nine Months [Member] Saudi Awwal Bank Saudi Awwal Bank [Member] The Saudi British Bank [Member] Percentage of reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17 Percentage of reasonably possible decrease in risk variable that arises from contracts within scope of IFRS 17 4.041% Fixed Rate/Floating Rate Senior Unsecured Notes due 2028 (US404280BK42) 4.041% Fixed/Floating Rate Senior Unsecured Notes Due 2028 [Member] 4.041% Fixed/Floating Rate Senior Unsecured Notes Due 2028 Foreign currencies Description of accounting policy for functional currency [text block] Net new and further lending/repayments Net new and further lending/repayments Increase (Decrease) Through Origination Or Purchase (Repayments), Financial Assets Increase (Decrease) Through Origination Or Purchase (Repayments), Financial Assets Disclosure Of Face Statements [Line Items] Disclosure Of Face Statements [Line Items] [Line Items] for Disclosure Of Face Statements [Table] Deferred tax liabilities Deferred tax liabilities Geographical [Axis] Geographical [Axis] Tax paid Tax received Income taxes paid (refund), classified as operating activities 10% increase in growth assets Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Equity Prices Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Equity Prices Average daily closing share price (GBP per share) Average Daily Closing Share Price Average Daily Closing Share Price Treasury shares Treasury shares [member] Net decrease in cash and cash equivalents Increase (decrease) in cash and cash equivalents before effect of exchange rate changes 10-year discount rate (%) Ten Year Discount Rate [Member] Ten Year Discount Rate Disclosure of funding sources and uses Disclosure Of Funding Sources And Uses [Table Text Block] Disclosure Of Funding Sources And Uses [Table Text Block] – other trading assets Other Trading Assets [Member] Other Trading Assets [Member] Disclosure of subsidiaries [line items] Disclosure of subsidiaries [line items] Disclosure of fair value measurement of liabilities Fair values of financial instruments not carried at fair value and bases of valuation - liabilities Disclosure of fair value measurement of liabilities [text block] Pension Pension [Member] Pension Lion Corporate Services Limited Lion Corporate Services Limited [Member] Lion Corporate Services Limited [Member] 5.546% Fixed Rate/Floating Rate Senior Unsecured Notes due 2030 (US404280ED71) 5.546% Fixed Rate/Floating Rate Senior Unsecured Notes due 2030 [Member] 5.546% Fixed Rate/Floating Rate Senior Unsecured Notes due 2030 HSBC Global Asset Management (Hong Kong) Limited HSBC Global Asset Management (Hong Kong)Limited [Member] HSBC Global Asset Management (Hong Kong)Limited [Member] Taxable benefits Directors Remuneration Expense, Taxable Benefits Directors Remuneration Expense, Taxable Benefits Trinkaus Private Equity Management GmbH Trinkaus Private Equity Management GmbH [Member] Trinkaus Private Equity Management GmbH [Member] Silkroad GP SC S.a r.l Silkroad GP SC S.a r.l [Member] Silkroad GP SC S.a r.l Percentage of reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17 Percentage of reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17 Other balance sheet liabilities Other Balance Sheet Liabilities [Member] Other Balance Sheet Liabilities [Member] Attribution of expenses by nature to their function [domain] Attribution of expenses by nature to their function [domain] Inclusion index, snapshot survey, percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Inclusion Index, Snapshot Survey, Percentage Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Inclusion Index, Snapshot Survey, Percentage HSBC Nominees (New Zealand) Limited HSBC Nominees (New Zealand) Limited [Member] HSBC Nominees (New Zealand) Limited [Member] Capitalised wages and salaries Capitalised Wages And Salaries Capitalised Wages And Salaries Disclosure of insurance subsidiaries sensitivity analysis to insurance risk Disclosure of additional information representative of risk exposure arising from contracts within scope of IFRS 17 during period [text block] – debt instruments at fair value through other comprehensive income Other Comprehensive Income, Net Of Tax, Financial Assets Measured At Fair Value Through Other Comprehensive Income, Excluding Disposal Of Subsidiary Other Comprehensive Income, Net Of Tax, Financial Assets Measured At Fair Value Through Other Comprehensive Income, Excluding Disposal Of Subsidiary Effective trade-weighted average rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Effective Trade-Weighted Average Rate Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Effective Trade-Weighted Average Rate HSBC (Malaysia) Trustee Berhad HSBC (Malaysia) Trustee Berhad [Member] HSBC (Malaysia) Trustee Berhad [Member] Debt securities repaid Repayments of borrowings, classified as financing activities Prepayments and accrued income Prepayments and accrued income other than contract assets Assetfinance December (F) Limited Assetfinance December (F) Limited [Member] Assetfinance December (F) Limited [Member] Other provisions Miscellaneous other provisions [member] HSBC Securities (Singapore) Pte Limited HSBC Securities (Singapore) Pte Limited [Member] HSBC Securities (Singapore) Pte Limited [Member] Trinkaus Europa Immobilien-Fonds Nr.3 Objekt Utrecht Verwaltungs-GmbH Trinkaus Europa Immobilien-Fonds Nr.3 Objekt Utrecht Verwaltungs-GmbH [Member] Trinkaus Europa Immobilien-Fonds Nr.3 Objekt Utrecht Verwaltungs-GmbH [Member] Effect on profit after tax (net) due to increase in risk variable Increase (decrease) in profit (loss) due to reasonably possible increase in risk variable that arises from contracts within scope of IFRS 17 Growth rate beyond initial cash flow Growth rate used to extrapolate cash flow projections International employee share purchase plan International Employee Share Purchase Plan [Member] International Employee Share Purchase Plan [Member] 26 Feb 24 26 Feb 24 [Member] 26 Feb 24 Disclosure of detailed information about hedging instruments [table] Disclosure of detailed information about hedging instruments [table] Number of other HSBC securities held (in shares) Number Of Other Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates Number Of Other Shares In Entity Held By Entity Or By Its Subsidiaries Or Associates Accumulated impairment losses Allowance for ECL Accumulated impairment Accumulated impairment [member] Contingent liabilities, contractual commitments and guarantees Disclosure of commitments and contingent liabilities [text block] Liabilities under investment contracts designated at fair value Investment Contracts Liabilities At Fair Value Investment Contracts Liabilities At Fair Value 10% depreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Decrease, Reasonably Possible Change In Risk Variable, Effect On Profit (Loss) After Tax, Foreign Currency Translation Assets held for sale Assets Held For Sale1 [Member] Assets Held For Sale1 [Member] Asset Carrying Amount [Domain] Asset Carrying Amount [Domain] [Domain] for Asset Carrying Amount [Axis] Net cash from investing activities Cash flows from (used in) investing activities Other financial assets at amortised cost not presented as wholesale or personal lending, including held for sale Other Financial Assets, Including Assets Held For Sale [Member] Other Financial Assets, Including Assets Held For Sale Derivatives Disclosure of derivative financial instruments [text block] CIB CIB, Segment [Member] CIB [Member] – 76% to 90% LTV 76 To 90 Percent [Member] LTV 76 To 90 Percent [Member] HSBC Investment Company Limited HSBC Investment Company Limited [Member] HSBC Investment Company Limited [Member] Bahrain Retail Banking Business Bahrain Retail Banking Business [Member] Bahrain Retail Banking Business Award vesting period, maximum period from purchase of shares Share-based Compensation Arrangement By Share-based Payment Award, Award Vesting Period, Maximum Period From Purchase of Shares Share-based Compensation Arrangement By Share-based Payment Award, Award Vesting Period, Maximum Period From Purchase of Shares Employee compensation and benefits Gross employee compensation and benefits for the year ended 31 Dec Employee compensation and benefits Employee benefits expense Average RoTE assessment with CET1 underpin Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Average Return On Equity Share-Based Compensation Arrangement By Share-Based Payment Award, Assessment Of Performance Metric, Average Return On Equity Amortisation, intangible assets other than goodwill Amortisation, intangible assets other than goodwill Balance Sheet Location [Axis] Balance Sheet Location1 [Axis] Balance Sheet Location [Axis] Lifetime expected credit losses Stage 2 Lifetime expected credit losses [member] Other instruments Other personal lending Other Financial Instruments [Member] Other Financial Instruments [Member] Share of profit/(loss) in associates and joint ventures less impairment Share Of Profit (Loss) Of Associates And Joint Ventures Accounted For Using Equity Method, Less Impairment Share Of Profit (Loss) Of Associates And Joint Ventures Accounted For Using Equity Method, Less Impairment Loan and other credit-related commitments Commitments Contractual capital commitments Disclosure of operating segments [table] Disclosure of operating segments [table] German custody business German Custody Business [Member] German Custody Business Fees for HSBC Holdings’ statutory audit Auditor's Remuneration For Statutory Audit Services Auditor's Remuneration For Statutory Audit Services HSBC Bank plc Total for all subsidiaries Total for all subsidiaries [member] PT Bank HSBC Indonesia PT Bank HSBC Indonesia [Member] PT Bank HSBC Indonesia [Member] Financial Liabilities Subject To Offsetting Financial Liabilities Subject To Offsetting [Member] Financial Liabilities Subject To Offsetting [Member] Award as a percentage of base salary Share-Based Compensation Arrangement By Share-Based Payment Award, Award As A Percentage Of Base Salary Share-Based Compensation Arrangement By Share-Based Payment Award, Award As A Percentage Of Base Salary Other plans Other Plans [Member] Other Plans [Member] HSBC Services Japan Limited HSBC Services Japan Limited [Member] HSBC Services Japan Limited [Member] Net cash flows from disposal of loan portfolio and customer accounts Net Cash Inflow (Outflow) From Disposal Of Customer And Loan Portfolios Net Cash Inflow (Outflow) From Disposal Of Customer And Loan Portfolios Equities Equity Equity price risk [member] Retained home and other loan portfolio French Retained Home And Other Loan Portfolio [Member] French Retained Home And Other Loan Portfolio Segments [axis] Segments [axis] Types of risks [axis] Types of risks [axis] Assetfinance March (D) Limited Assetfinance March (D) Limited [Member] Assetfinance March (D) Limited [Member] Employees involved in litigation Number Of Employees Involved In Litigation Number Of Employees Involved In Litigation Not later than four years Not Later Than Four Years [Member] Not Later Than Four Years [Member] HSBC Bank Middle East Limited HSBC Bank Middle East Limited [Member] HSBC Bank Middle East Limited [Member] Summary Of Income Taxes [Table] Summary Of Income Taxes [Table] Summary Of Income Taxes [Table] Net cash inflow on acquisition/disposal of subsidiaries, businesses, associates and joint ventures Cash Inflow From Disposal (Purchase) Of Subsidiaries, Businesses, Associates, And Joint Ventures Cash Inflow From Disposal (Purchase) Of Subsidiaries, Businesses, Associates, And Joint Ventures Other adjustments (C) Other Macroeconomic Related Adjustments [Member] Other Macroeconomic Related Adjustments Financial measure, payout Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Payout Critical Financial Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Payout Sopingest Sopingest [Member] Sopingest [Member] Non-current assets and disposal groups held for sale Description of accounting policy for non-current assets or disposal groups classified as held for sale and discontinued operations [text block] Adjustments for fair value losses (gains) Adjustments for fair value losses (gains) Marketnode PTE. Ltd. Marketnode PTE. Ltd. [Member] Marketnode PTE. Ltd. HSBC Electronic Data Processing India Private Limited HSBC Electronic Data Processing India PrivateLimited [Member] HSBC Electronic Data Processing India PrivateLimited [Member] Contingent liabilities dismissed Contingent Liabilities Dismissed Contingent Liabilities Dismissed Exercised during the year (in GBP per share) Weighted average exercise price of share options exercised in share-based payment arrangement Funding Uses [Axis] Funding Uses [Axis] Funding Uses [Axis] Financial investments - measured at amortised cost Debt instruments measured at amortised cost Financial assets at amortised cost, category Financial assets at amortised cost, category [member] Carbon Reduction Carbon Reduction [Member] Carbon Reduction Long-term incentive awards, with performance conditions Long-Term Incentive Awards, With Performance Conditions [Member] Long-Term Incentive Awards, With Performance Conditions [Member] Transferred financial assets that are not derecognised in their entirety [axis] Transferred financial assets that are not derecognised in their entirety [axis] SGD1,000m issued at 4.700% SGD 1000m 4.700% Perpetual Subordinated Contingent Convertible Securities [Member] SGD 1000m 4.700% Perpetual Subordinated Contingent Convertible Securities [Member] Par value per share (in dollars per share) Par value per share Dividends [Axis] Dividends1 [Axis] Dividends1 [Axis] Inflation rate, 5-year average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Inflation Rate, Five Year Average Inputs, Assumptions And Estimation Techniques Used To Determine Expected Credit Losses, Inflation Rate, Five Year Average UK Government United Kingdom Government Securities [Member] United Kingdom Government Securities [Member] Disclosure of sensitivity analysis for actuarial assumptions [abstract] Disclosure of sensitivity analysis for actuarial assumptions [abstract] Expected dividend yield Expected dividend as percentage, share options granted Annual savings Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Annual Savings Outcome Of Critical Performance Measure Used To Evaluate Entity's Performance Against Stated Objectives, Annual Savings Non-HSBC managed funds Investment Funds Managed By Third Party [Member] Investment Funds Managed By Third Party [Member] (Impairment) of subsidiaries/reversal of impairment Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Subsidiary Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Subsidiary Amendment Flag Amendment Flag Deposits Deposits, Related Party Transactions Deposits, Related Party Transactions Disclosure of total incentive awards granted to income statement charge Disclosure Of Incentive Awards [Table Text Block] Disclosure Of Incentive Awards [Table Text Block] Employee compensation and benefits Description of accounting policy for employee benefits [text block] Reinsurance contract liabilities Reinsurance contracts held that are liabilities CET1 capital ratio CET1 Capital Ratio CET1 Capital Ratio Hang Seng Bank Hang Seng Bank [Member] Hang Seng Bank HSBC Australia Holdings Pty Limited HSBC Australia Holdings Pty Limited [Member] HSBC Australia Holdings Pty Limited [Member] Insurance agency commission Insurance Agency Fee And Commission Income Insurance Agency Fee And Commission Income Other instruments managed on a fair value basis Other Other Financial Assets Designated At Fair value [Member] Other Financial Assets Designated At Fair value [Member] Related party management fees Services received, related party transactions Total operating income Net operating income/(expense) before change in expected credit losses and other credit impairment charge Revenue Revenue Revenue and other operating income Period of tenure required for no performance conditions for Directors who cease employment as good leaver Key Management Personnel Compensation, Shareholding Guidelines, Minimum Tenure Period Required For No Performance Conditions Key Management Personnel Compensation, Shareholding Guidelines, Minimum Tenure Period Required For No Performance Conditions Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Risk variables [domain] Risk variables [domain] HSBC Electronic Data Processing (Philippines), Inc. HSBC Electronic Data Processing (Philippines), Inc. [Member] HSBC Electronic Data Processing (Philippines), Inc. [Member] Accumulated decrease in fair value of financial liability, attributable to changes in credit risk of liability Accumulated increase (decrease) in fair value of financial liability, attributable to changes in credit risk of liability Performance guarantees Performance Guarantees [Member] Performance Guarantees – other derivatives other derivative asset [Member] other derivative asset Currency translation Corporate And Reconciling Items [Member] Corporate And Reconciling Items Disclosure of assets pledged Disclosure Of Assets Pledged As Collateral [Table Text Block] Disclosure Of Assets Pledged As Collateral [Table Text Block] Recurring fair value measurement Recurring fair value measurement [member] HSBC Global Asset Management (Bermuda) Limited HSBC Global Asset Management (Bermuda) Limited [Member] HSBC Global Asset Management (Bermuda) Limited [Member] Due over 1 month but not more than 3 months Later than one month and not later than three months [member] Carrying amount, assets Hedged item, assets Share Capital, Reserves And Other Equity Interest [Abstract] Share Capital, Reserves And Other Equity Interest [Abstract] Share Capital, Reserves And Other Equity Interest [Abstract] Trading assets Disclosure of financial assets held for trading [text block] HSBC Asset Management (Fund Services UK) Limited HSBC Asset Management (Fund Services UK) Limited [Member] HSBC Asset Management (Fund Services UK) Limited Expense from share-based payments Expense from share-based payment transactions 4.619% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 (US404280FE46) 4.619% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 [Member] 4.619% Fixed Rate/Floating Rate Senior Unsecured Notes due 2031 Insurance contract fulfillment cost Insurance Contract Fulfillment Cost [Member] Insurance Contract Fulfillment Cost Other Other Financial Assets, Including Unallocated [Member] Other Financial Assets, Including Unallocated HSBC Servicios, S.A. DE C.V., Grupo Financiero HSBC HSBC Servicios, S.A. DE C.V., Grupo Financiero HSBC [Member] HSBC Servicios, S.A. DE C.V., Grupo Financiero HSBC [Member] Card-Flo 3, Inc. Card-Flo 3, Inc. [Member] Card-Flo 3, Inc. [Member] Assetfinance June (A) Limited Assetfinance June (A) Limited [Member] Assetfinance June (A) Limited [Member] Loan To Value [Axis] Loan To Value1 [Axis] Loan To Value1 [Axis] Over 10 years Later than ten years [member] Issue of ordinary share capital and other equity instruments Proceeds From Issuing Shares And Other Equity Instruments Proceeds From Issuing Shares And Other Equity Instruments Additions Additional provisions, other provisions HSBC Bank (General Partner) Limited HSBC Bank (General Partner) Limited [Member] HSBC Bank (General Partner) Limited [Member] Estimated assets needed to secure all future pension payments Estimated Assets Needed To Secure All Future Pension Payments Estimated Assets Needed To Secure All Future Pension Payments Korean short selling investigation Korean Short Selling Investigation [Member] Korean Short Selling Investigation Exposures to legacy tax cases Adjustments For Credit (Charge) To Current Tax Relating To Legacy Tax Cases Adjustments For Credit (Charge) To Current Tax Relating To Legacy Tax Cases Currency [Axis] Currency [Axis] Duration of reasonably possible increase in actuarial assumption Duration Of Reasonably Possible Increase In Actuarial Assumption Duration Of Reasonably Possible Increase In Actuarial Assumption CCF & Partners Asset Management Limited CCF & Partners Asset Management Limited [Member] CCF & Partners Asset Management Limited [Member] Privatization of Subsidiary Privatization of Subsidiary [Member] Privatization of Subsidiary Solitaire Solitaire [Member] Solitaire [Member] Investments in subsidiaries Disclosure of interests in subsidiaries Disclosure of interests in subsidiaries [text block] Ann Godbehere Ann Godbehere Non-Executive Director, Ann Godbehere [Member] Non-Executive Director, Ann Godbehere Change in deposits by banks and customer accounts Adjustments for increase (decrease) in deposits Fulcher Enterprises Company Limited (In Liquidation) Fulcher Enterprises Company Limited [Member] Fulcher Enterprises Company Limited [Member] Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] International Wealth and Premier Banking International Wealth and Premier Banking, Segment [Member] International Wealth and Premier Banking, Segment Credit impairment of financial instruments [domain] Credit impairment of financial instruments [domain] 10% appreciation in US dollar exchange rate against local functional currency Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Foreign Currency Translation Sensitivity Analysis For Types Of Market Risk, Effect Of Ten Percentage Point Increase, Reasonably Possible Change In Risk Variable, Effect On Total Equity, Foreign Currency Translation HSBC Securities (USA) Inc. HSBC Securities (USA) Inc. [Member] HSBC Securities (USA) Inc. [Member] HSBC Asia Pacific Holdings (UK) Limited HSBC Asia Pacific Holdings (UK) Limited [Member] HSBC Asia Pacific Holdings (UK) Limited [Member] Average effective tax rate Average effective tax rate Average effective tax rate Assets accepted as collateral that can be sold or repledged in the absence of default Collateral held permitted to be sold or repledged in absence of default by owner of collateral, at fair value Designated at fair value At fair value [member] Onerous contracts issued Increase (decrease) through effects of groups of onerous contracts initially recognised in period, insurance contracts liability (asset) Disclosure of detailed information on earnings per share Earnings per share [text block] Auditor's renumeration, expenses reimbursed Auditor's Renumeration, Expenses Reimbursed Auditor's Renumeration, Expenses Reimbursed Securities Financial Assets Designated At Fair Value Excluding Corporate And Consumer Loans [Member] Financial Assets Designated At Fair Value Excluding Corporate And Consumer Loans [Member] Sustainable finance and investment Sustainable finance and investment [Member] Sustainable finance and investment Tekoma Korea Limited Tekoma Korea Limited [Member] Tekoma Korea Limited HSBC Brasil Holding S.A. HSBC Brasil Holding S.A. [Member] HSBC Brasil Holding S.A. [Member] Model – Option model Option pricing model [member] HSBC International Trustee (Holdings) Pte. Limited HSBC International Trustee (Holdings) Pte. Limited [Member] HSBC International Trustee (Holdings) Pte. Limited [Member] Wealth Fees & Other Operating Income Wealth Fees & Other Operating Income [Member] Wealth Fees & Other Operating Income Employee benefit liabilities (Note 5) Net defined benefit liability Net investment in intangible assets Purchase of intangible assets, classified as investing activities Period after appointment to meet minimum shareholding guideline Key Management Personnel Compensation, Shareholding Guidelines, Period After Appointment To Meet Guideline Key Management Personnel Compensation, Shareholding Guidelines, Period After Appointment To Meet Guideline $2,000m issued at 8.000% $2,000m 8% Perpetual Subordinated Contingent Convertible Securities [Member] $2,000m 8% Perpetual Subordinated Contingent Convertible Securities – financial Financial Loans Financial Loans HSBC Retirement Benefits Trustee (UK) Limited HSBC Retirement Benefits Trustee (UK) Limited [Member] HSBC Retirement Benefits Trustee (UK) Limited [Member] Internal credit grades [axis] Internal credit grades [axis] HSBC Securities Services Holdings (Ireland) DAC HSBC Securities Services Holdings (Ireland) DAC [Member] HSBC Securities Services Holdings (Ireland) DAC [Member] Percentage of plan funded Defined Benefit Plan, Funded Level Defined Benefit Plan, Funded Level