Dilutive effect of share-based compensation (in shares) Dilutive effect of share options on weighted average number of ordinary shares At cost Gross carrying amount [member] Cash and cash equivalents Description Of Accounting Policy For Cash And Temporary Investments, Net Explanatory [Policy Text Block] The description of the entity's accounting policy for cash and temporary investments, net. Treasury shares Treasury shares [member] Weighted average fair value at measurement date, other equity instruments granted Weighted average fair value at measurement date, other equity instruments granted Phantom restricted share units - Canadian $ denominated Phantom Restricted Share Units Canadian Dollar Denominated [Member] This member stands for phantom restricted share units, Canadian $ denominated. Non-current liabilities Non-current liabilities [abstract] Payments to related parties Payments To Related Parties Amount of cash payments to related parties. Share-based compensation Key management personnel compensation, share-based payment Financial assets, category [member] Financial assets, category [member] Withholding and other taxes Tax Effect Of Withholding And Other Taxes The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to withholding and other taxes. Accounting policy developments Accounting policy developments No definition. Depreciation and amortization Adjustments for depreciation and amortisation expense Share Option Awards Tranche A Share Option Awards Tranche A [Member] Share Option Awards Tranche A Wages and salaries Wages and salaries Vesting Method [Domain] Vesting Method [Domain] Vesting Method [Domain] Non-deductible items Tax effect of expense not deductible in determining taxable profit (tax loss) Granted (in shares) Number Of Other Equity Instruments Granted In Sharebased Payment Arrangement Number Of Other Equity Instruments Granted In Sharebased Payment Arrangement Classes of employee benefits expense [abstract] Classes of employee benefits expense [abstract] Expected lives (years) Option life, share options granted Benefits recognized for non-capital losses Tax benefit arising from previously unrecognised tax loss, tax credit or temporary difference of prior period used to reduce current tax expense Number of shares authorised (in shares) Number of shares authorised Unit appreciation rights, granted, value Unit Appreciation Rights, Granted, Value Unit Appreciation Rights, Granted, Value Carryforward period Unused Tax Losses For Which No Deferred Tax Asset Recognized, Carryforward Period Unused Tax Losses For Which No Deferred Tax Asset Recognized, Carryforward Period Trade accounts payable Current trade payables Liquidity risk Disclosure of financial liabilities [line items] Disclosure Of Detailed Information On Trade And Other Receivables Disclosure Of Detailed Information On Trade And Other Receivables [Table Text Block] Disclosure Of Detailed Information On Trade And Other Receivables Accounts receivable Disclosure of trade and other receivables [text block] Canadian Dollars Canada, Dollars Schedule of gains and losses, excluding income tax effects, arising from derivative instruments that are classified as cash flow hedging items Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [text block] Later than eight fiscal quarters Later Than Eight Fiscal Quarters [Member] This member stands for a time band of later than eight fiscal quarters. Transfers Increase (decrease) through transfers, property, plant and equipment Dispositions and other Disposals, intangible assets and goodwill Percentage of reasonably possible decrease in unobservable input, liabilities Percentage of reasonably possible decrease in unobservable input, liabilities Future cash outflows in respect of associated interest and like carrying costs Future Cash Outflows Long Term Debt Interest And Like Carrying Costs Future cash outflows in respect of long-term debt interest and like carrying costs. Range [axis] Range [axis] Grant date fair value, number of shares (in shares) Equity Accounted Awards, Grant Date Fair Value, Number of Shares Equity Accounted Awards, Grant Date Fair Value, Number of Shares Total Parent And Subsidiaries Of Parent [Member] This member stands for parent and subsidiaries of parent. Maximum maturity date IFRS Derivative Instrument Maximum Maturity Date The maximum maturity date of the derivative instrument. Proportion of voting rights held by non-controlling interests Proportion of voting rights held by non-controlling interests Financial instruments, class [member] Financial instruments, class [member] Granted (in dollars per share) Weighted average exercise price of share options granted in share-based payment arrangement Trading Symbol Trading Symbol Total Nonderivative And Derivative Financial Liabilities Undiscounted Cash Flows The amount of contractual undiscounted cash flows in relation to derivative and non-derivative financial liabilities. Share option awards, Weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Exercise Price [Abstract] No definition available Amounts to be exchanged, (receive) Contractual Amounts To Be Exchanged In Derivative Financial Instrument For Which Gross Cash Flows Are Exchanged Derivative Receive The amount of contractual undiscounted cash flows in relation to contractual amounts to be exchanged in a derivative receivable financial instrument for which gross cash flows are exchanged. Shares exchanged or redesignated Value of Number of Shares Exchanged or Redesignated Value of Number of Shares Exchanged or Redesignated Capital asset additions Capital Expenditures [Abstract] This concept does not have a custom type definition. All Currencies [Domain] All Currencies [Domain] Derivatives held for hedging Derivatives Held For Hedging [Member] This member stands for derivative financial instruments that are held for hedging purposes. Share-based compensation Disclosure of share-based payment arrangements [text block] Computer equipment, furniture, and other Computer Equipment, Furniture, And Other [Member] Computer Equipment, Furniture, And Other Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Accounts with TELUS Corporation and subsidiaries, beginning balance, accounts payable Accounts with TELUS Corporation and subsidiaries, ending balance, accounts payable Balances due to related party Amounts payable, related party transactions Property, plant and equipment Disclosure of detailed information about property, plant and equipment [line items] Notes to Consolidated Financial Statements Disclosure of additional information [text block] Summary of significant accounting policies Summary of significant accounting policies n/a Multiple Voting Shares Issued in Secondary Public Offering Multiple Voting Shares Issued in Secondary Public Offering [Member] Multiple Voting Shares Issued in Secondary Public Offering Total liabilities and owners’ equity Equity and liabilities Write-off Utilisation, allowance account for credit losses of financial assets Balance at beginning of year Balance at end of year Other provisions Share option awards, Non-vested IFRS Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Products and services Products and services [member] Local Phone Number Local Phone Number Prepaid and other assets Prepaid And Other Assets Recognized As Of Acquisition Date Prepaid And Other Assets Recognized As Of Acquisition Date Due to affiliated companies Trade And Other Payables To Related Parties [Member] This member stands for trade and other payables to related parties. Common Class A to Common Class E Common Class A to Common Class E [Member] Common Class A to Common Class E TELUS Corporation Parent [member] Amount arising Other comprehensive income, before tax, exchange differences on translation of foreign operations Temporary difference, unused tax losses and unused tax credits Temporary difference, unused tax losses and unused tax credits [member] Maturity [axis] Maturity [axis] Financial instruments - recognition and measurement Description of accounting policy for financial instruments [text block] Schedule of changes in liabilities arising from financing activities Disclosure of Detailed Information About Changes in Liabilities Arising from Financing Activities [Text Block] The disclosure of detailed information about changes in liabilities arising from financing activities for a statement of cash flows. Net income sensitivity to increase in risk variable Increase Decrease in Net Income Due to Reasonably Possible Increase in Risk Variable The increase (decrease) in net income, as a result of an increase in the relevant risk variable that was reasonably possible at the end of the reporting period. Prepaid expenses Adjustments for decrease (increase) in prepaid expenses Leases Leases [Member] This member stands for leases. Cash payments for acquisitions, net of cash acquired Cash Payments To Acquire Businesses Net The net cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Financial assets, class [member] Financial assets, class [member] Accrued and paid expense Accrued and Paid Expense From Cash-Settled Share-Based Payment Transactions Accrued and Paid Expense From Cash-Settled Share-Based Payment Transactions Common shares issued Carrying Value Of Business Acquired Less Fair Value Of Consideration Paid Carrying Value Of Business Acquired Less Fair Value Of Consideration Paid Change in market value of derivatives and other Adjustments For Changes In Market Value Of Derivatives And Other Adjustments Adjustments for gains (losses) on changes in the market value of derivatives and other adjustments to reconcile profit (loss) to net cash flow from (used in) operating activities. Number of businesses acquired Businesses Acquired, Number Businesses Acquired, Number Adjustments recognized in the current year for income tax of prior years Adjustments for current tax of prior periods Receipts from related parties Receipts From Related Parties Amount of cash receipts from related parties. Exercised (in shares) Number of other equity instruments exercised or vested in share-based payment arrangement Exercised (in shares) Number Of Vested Share Options Exercised In Share-Based Payment Arrangement The number of vested share options exercised in a share-based payment arrangement. Total Current liabilities Long-term debt Long term Borrowings Current And Non current Total long-term borrowings, including the current and non-current portion. Tax rate effect of (gains) losses not recognized (as a percent) Tax Rate Effect Of (Gains) Losses Not Recognized Tax Rate Effect Of (Gains) Losses Not Recognized Estimated useful lives of purchased intangible assets other than goodwill Useful life of intangible assets Useful life measured as period of time, intangible assets other than goodwill Provisions Non-current Other non-current provisions Document Accounting Standard Document Accounting Standard Geographical areas [axis] Geographical areas [axis] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Additions Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets Interest expense Interest costs [abstract] OTHER COMPREHENSIVE INCOME (LOSS) Other comprehensive income [abstract] Foreign exchange Increase (Decrease) Through Net Exchange Differences, Related Party Transactions The increase (decrease) in related party balances resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. Net identifiable assets acquired Net identifiable assets acquired Identifiable assets acquired (liabilities assumed) Other Aggregated individually immaterial business combinations [member] Phantom Restricted Share Units Settled With Subordinate Voting Shares Phantom Restricted Share Units Settled With Subordinate Voting Shares [Member] Phantom Restricted Share Units Settled With Subordinate Voting Shares Customer relationships Customer-related intangible assets [member] Foreign exchange Increase (decrease) through net exchange differences, intangible assets and goodwill Long-term debt Long-term borrowings [member] Deferred income taxes Deferred tax liabilities recognised as of acquisition date Total Non-current assets Interest expense and foreign exchange Interest expense and foreign exchange No definition available. Allowance for doubtful accounts Balance, beginning of year Balance, end of year Allowance account for credit losses of financial assets Provisions Disclosure of other provisions [line items] Exercisable, end of year (in dollars per share) Weighted average exercise price of share options exercisable in share-based payment arrangement Disclosure of objectives, policies and processes for managing capital [abstract] Disclosure of objectives, policies and processes for managing capital [abstract] Income and other taxes receivable Current tax assets, current Vested (in shares) Number Of Other Equity Instruments Vested In Sharebased Payment Arrangement The number of other equity instruments (i.e. other than share options) vested in a share-based payment arrangement. Cash flow hedging item (HFH) Cash flow hedges [member] Bulgaria BULGARIA Salaries and benefits Salaries and benefits Employee benefits expense Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Security Exchange Name Security Exchange Name Owned Assets Property Plant And Equipment Owned Assets [Member] Information pertaining to owned assets. Schedule of other comprehensive income Disclosure Of Analysis Of Other Comprehensive Income By Item Explanatory [Table Text Block] Disclosure by line item for other comprehensive income. Other comprehensive income (loss) Disclosure of analysis of other comprehensive income by item [line items] Thereafter Later than five years [member] Accounts receivable Fair value of acquired receivables Document Type Document Type 5 Years 5 Years [Member] 5 Years Period over which management has projected cash flows Period Over Which Management Has Projected Cash Flows Period over which management has projected cash flows based on financial budgets/forecasts approved by management. Segment reporting Disclosure of entity's operating segments [text block] 2028 Later than four years and not later than five years [member] 2027 Later than three years and not later than four years [member] Outstanding, beginning of year (in shares) Outstanding, end of year (in shares) Number of share options outstanding in share-based payment arrangement Current maturities of long-term debt Current Portion Of Long-Term Debt Recognized As Of Acquisition Date Current Portion Of Long-Term Debt Recognized As Of Acquisition Date Comprehensive income sensitivity to decrease in risk variable Increase Decrease in Comprehensive Income Due to Reasonably Possible Decrease in Risk Variable The increase (decrease) in comprehensive income, as a result of an decrease in the relevant risk variable that was reasonably possible at the end of the reporting period. Lionbridge Ai Lionbridge Ai [Member] This member stands for the Lionbridge AI division of Lionbridge Technologies, Inc. Schedule of reconciliation of revenue and net long-lived assets by geographic area Disclosure Of Operating Segments Reconciliation Explanatory [Table Text Block] The disclosure of reconciliation of operating segments. Derivatives held for trading Derivatives Held For Trading [Member] This member stands for derivative financial instruments that are held for trading purposes and are not designated as being in a hedging relationship. Property, plant and equipment Disclosure of property, plant and equipment [text block] Number of restricted share units - Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Number of Shares [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. property, plant and equipment [table] Disclosure of detailed information about property, plant and equipment [table] Other Miscellaneous other provisions [member] Risks [member] Risks [member] Concentration risk percentage IFRS Concentration Risk, Percentage For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Minimum acquisition aggregate cash consideration threshold to increase the maximum permitted net debt to EBIDTA ratio Business Combination Minimum Cash Consideration For Increase In Required Net Debt To EBITDA Ratio Minimum aggregate cash consideration for acquisition needed to increase the maximum permitted net debt to EBIDTA ratio, per provisions of debt instrument. Disclosure of detailed information about business combination [table] Disclosure of detailed information about business combination [table] Maximum Top of range [member] Title of 12(b) Security Title of 12(b) Security Total liabilities assumed Identifiable Liabilities Recognized As Of Acquisition Date Identifiable Liabilities Recognized As Of Acquisition Date Acquired during the year & other Increase (decrease) in deferred tax liability (asset) Future exercise period Future Exercise Period Future Exercise Period Disclosure of disaggregation of revenue from contracts with customers [table] Disclosure of disaggregation of revenue from contracts with customers [table] Accumulated balance at beginning Accumulated balance at ending Reserve of cash flow hedges Thereafter Later than ten years [member] Share issue price (in dollars per share) Equity Securities, Shares Issued, Price Per Share Per share or per unit amount of equity securities issued. Interest on lease liabilities Interest expense on lease liabilities Exercise period Contractual Life Of Share Based Awards Option term (expiration period), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Disclosure of objectives, policies and processes for managing capital [line items] Disclosure of objectives, policies and processes for managing capital [line items] Term loan components Telus International Cda Inc Term Loan [Member] This member stands for the TELUS International (Cda) Inc. term loan component of the credit facility. 2025 Later than one year and not later than two years [member] Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents after effect of exchange rate changes Spain SPAIN Balance at beginning of the year Balance at end of the year Intangible assets and goodwill Other comprehensive income sensitivity to decrease in risk variable Increase Decrease in Other Comprehensive Income Due to Reasonably Possible Decrease in Risk Variable The increase (decrease) in other comprehensive income, as a result of an decrease in the relevant risk variable that was reasonably possible at the end of the reporting period. Entity Interactive Data Current Entity Interactive Data Current Expected volatility Expected volatility, share options granted Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Debt issuance costs Payments for debt issue costs Summary of the activity related to share option awards Disclosure of number and weighted average exercise prices of share options [text block] After-tax impact of provisions for written put options Increase (decrease) to profit (loss) to reflect dilutive effect resulting from assumed conversion of potential ordinary shares Weighted average fair value at measurement date, share options granted Weighted average fair value at measurement date, share options granted Software Computer software [member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-current assets recognised as of acquisition date Non-current assets recognised as of acquisition date Tax rate effect for foreign tax differential (as a percent) Tax rate effect of foreign tax rates Non-adjusting events after reporting period Non-adjusting events after reporting period [member] Related party transactions Disclosure of related party [text block] Ownership interest in businesses acquired Percentage of voting equity interests acquired Disclosure of classes of share capital [abstract] Disclosure of classes of share capital [abstract] Long-term debt excluding Lease liabilities Long term Borrowings Current And Non current Excluding Lease Liabilities Total long-term borrowings, including the current and non-current portion but excluding the lease liabilities. Brand Names, And Other Intangible Assets Brand Names, And Other Intangible Assets [Member] Brand Names, And Other Intangible Assets HFT Financial assets at fair value through profit or loss, classified as held for trading, category [member] Tech and Games Tech and Games [Member] Tech and Games Derivative assets non-current Derivative Assets Non-Current [Member] Derivative Assets Non-Current Auditor Location Auditor Location Operating revenues benchmark Operating Revenues Benchmark [Member] This member stands for concentrations of risk classified as operating revenues. Income taxes Disclosure of income tax [text block] Summary of transactions with key management personnel Disclosure of information about key management personnel [text block] Long-term debt Disclosure Of Long Term Borrowings Explanatory [Text Block] The disclosure of non-current borrowings. [Refer: Borrowings] Forfeited (in shares) Number Of Vested Share Options Forfeited In Shar-Based Payment Arrangement Number Of Vested Share Options Forfeited In Shar-Based Payment Arrangement Classes of financial instruments [axis] Classes of financial instruments [axis] Dividend yield Expected dividend as percentage, share options granted Schedule of gains and losses (excluding income tax effects) arising from derivative instruments classified as held for trading Schedule of Gains and Losses from Derivative Instruments Classified as Held for Trading [Table Text Block] Tabular disclosure of gains and losses arising from derivative instruments classified as held for trading and not designated as being in a hedging relationship. Owners’ equity Beginning balance Ending balance Equity Germany GERMANY Current assets derivatives Derivative Assets Current [Member] This member stands for current asset derivative financial instruments or other contracts within the scope of IFRS 9 with all three of the following characteristics: (a) Their value changes in response to the change in a specified interest rate, financial instrument price, commodity price, foreign exchange rate, index of prices or rates, credit rating or credit index, or other variable, provided in the case of a non-financial variable that the variable is not specific to a party to the contract (sometimes called the 'underlying'); (b) They require no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; (c) They are settled at a future date. [Refer: Financial instruments, class [member]] Components of equity [axis] Components of equity [axis] Document Shell Company Report Document Shell Company Report Amount of gain (loss) recognized in other comprehensive income (effective portion) Gains (losses) on cash flow hedges, before tax Ineffective portion of derivative instruments classified as cash flow hedging items Gain (loss) on hedge ineffectiveness recognised in profit or loss Computer equipment, furniture, and other Fixtures and fittings [member] Competence Call Center Competence Call Center [Member] This member stands for Competence Call Center. Business combinations Description of accounting policy for business combinations [text block] North America North America [Member] Canada CANADA Multiple voting shares to subordinate voting shares Multiple Voting Shares to Subordinate Voting Shares [Member] Multiple Voting Shares to Subordinate Voting Shares Multiple Voting Shares Issued in Initial Public Offering Multiple Voting Shares Issued in Initial Public Offering [Member] Multiple Voting Shares Issued in Initial Public Offering Total liabilities Liabilities Employee defined benefit plan re- measurements Employee defined benefit plan re-measurements [Abstract] Employee defined benefit plan re-measurements Total items that may subsequently be reclassified to income Other comprehensive income that will be reclassified to profit or loss, net of tax Written Put Options Related to Retained Equity Interests Written Put Options Related to Retained Equity Interests [Member] Written Put Options Related to Retained Equity Interests Issued in lieu of dividends (in dollars per share) Weighted Average Fair Value At Measurement Date Other Equity Instruments Issued In Lieu Of Dividends In Period The weighted average fair value at the measurement date of equity instruments other than share options issued in lieu of dividends during the period. U.S dollars United States of America, Dollars Accumulated amortization Accumulated depreciation and amortisation [member] Schedule of employee benefit expenses Disclosure of information about employees [text block] Useful lives Useful life measured as period of time, property, plant and equipment Leases Temporary Differences From Leases [Member] This member stands for temporary differences from leases. Interest expense Interest expense Basis point change of reasonably possible decrease in unobservable input, liabilities Basis Point Change of Reasonably Possible Decrease in Unobservable Input, Liabilities Basis Point Change of Reasonably Possible Decrease in Unobservable Input, Liabilities Diluted earnings per share [abstract] Diluted earnings per share [abstract] Share option award fair value (in dollars per share) Weighted average share price, share options granted Lease liabilities Lease liabilities [member] Class B common shares Class B Ordinary Shares [Member] This member stands for Class B ordinary shares. Current liabilities, notional amount Notional Amount Current Derivative Liabilities The nominal or face amount of a derivative instrument classified as a current liability, used to calculate payments made on that instrument. Disclosure of accounting policies requiring a more significant choice among policies and/or a more significant application of judgment Disclosure Of Accounting Policies Requiring Significant Choice Or Significant Application Of Judgment [Table Text Block] Disclosure Schedule of derivative financial instruments measured at fair value on a recurring basis Disclosure of derivative financial instruments [text block] Currency swap agreement amounts to be exchanged Currency Risk Foreign Currency Transactions [Member] This member stands for a type of market risk representing the risk that future cash flows related to revenues and purchases denominated in a foreign currency will fluctuate because of changes in foreign exchange rates. Cash provided by (used in) financing activities Cash flows from (used in) financing activities Disclosure of detailed information about property, plant and equipment [abstract] Disclosure of detailed information about property, plant and equipment [abstract] Cash Cash and cash equivalents recognised as of acquisition date Total Interest expense on borrowings Schedule of details of long-term debt Disclosure of detailed information about borrowings [text block] Accounts payable and accrued liabilities Increase Decrease in Accounts Payable And Accrued Liabilities The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. Details of long-term debt Details Of Long Term Debt [Abstract] Pertains to details of long-term debt of the entity. Issued in lieu of dividends (in shares) Number Of Instruments Other Equity Instruments Issued In Lieu Of Dividends The number of other equity instruments (ie other than share options) issued in lieu of dividends in a share-based payment arrangement. Defined benefit plans Defined benefit plans [member] India INDIA Share capital Disclosure of share capital, reserves and other equity interest [text block] Receivables from contracts with customers [abstract] Guatemala GUATEMALA Intangible assets subject to amortization Intangible Assets Subject To Amortization [Member] This member stands for intangible assets subject to amortization. Long-term debt Non-current Non-current portion of non-current borrowings Phantom Restricted Share Units and Phantom Share Units Settled With Cash Phantom Restricted Share Units and Phantom Share Units Settled With Cash [Member] Phantom Restricted Share Units and Phantom Share Units Settled With Cash Losses not recognized Tax Effect Of (Gains) Losses Not Recognized The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to (gains) losses not recognized. Hedge ratio IFRS Hedge Ratio Percentage The hedge ratio of the derivative, established by assessing the degree of matching between the notional amounts of hedging items and the notional amounts of the associated hedged items. Accounting policy developments Disclosure of changes in accounting policies, accounting estimates and errors [text block] Gross profit Gross Profit, Related Party Transactions Amount of gross profit derived by the entity in related party transactions. Classes of financial liabilities [axis] Classes of financial liabilities [axis] Financial liabilities, class Financial liabilities, class [member] Adjustments recognized in the current year for income tax of prior years Adjustments for deferred tax of prior periods Other long-term assets Other long-term assets n/a Additional financial information Additional financial information No definition available. Other comprehensive loss Total Other comprehensive income Change in balance Increase (Decrease) In Related Party Transactions Amount of increase (Decrease) in related party transactions. Provisions and other Temporary Differences From Provisions And Other [Member] This member stands for temporary differences from provisions and other. Concentrations of risk [axis] Concentrations of risk [axis] Interest rate risk Interest rate risk [member] Share issue related cost Share issue related cost Share issue related cost Entity Emerging Growth Company Entity Emerging Growth Company Income taxes Income tax relating to cash flow hedges included in other comprehensive income Shares issued Proceeds from issue of ordinary shares Share-based compensation payments Share-based Compensation Payments, Classified As Operating Activities Share-based Compensation Payments, Classified As Operating Activities Consolidated statements of financial position Statement of financial position [abstract] Initial Public Offering Initial Public Offering [Member] Initial Public Offering TELUS Corporation (parent) Parent Company [Member] Disclosure of reconciliation of liabilities arising from financing activities Disclosure of reconciliation of liabilities arising from financing activities [line items] Deferred income tax expense (recovery) Deferred tax expense (income) [abstract] Expense from cash-settled share-based payment transactions Expense from cash-settled share-based payment transactions Classes of share capital [axis] Classes of share capital [axis] Buildings and leasehold improvements Buildings And Leasehold Improvements [Member] This member stands for a class of plant, property and equipment representing depreciable buildings and improvements to assets held under a lease agreement. Accounts with TELUS Corporation and subsidiaries, beginning balance, accounts receivable Accounts with TELUS Corporation and subsidiaries, ending balance, accounts receivable Balances due from related party Amounts receivable, related party transactions Current portion of derivative assets Current assets, fair value and carrying value Current derivative financial assets Disclosure of detailed information about intangible assets [line items] Disclosure of detailed information about intangible assets [line items] Ranges Ranges [member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Due to affiliated companies Due to Current payables to related parties Types of risks [axis] Types of risks [axis] Share Option Awards Tranche B Share Option Awards Tranche B [Member] Share Option Awards Tranche B Borrowings by name [axis] Borrowings by name [axis] Other comprehensive income Disclosure of analysis of other comprehensive income by item [text block] Sensitivity analysis of exposure to market risks Sensitivity analysis for types of market risk [text block] Forfeited (in USD and CDN dollars per share) Weighted Average Fair Value At Measurement Date Other Equity Instruments Forfeited And Cancelled In Period The weighted average fair value at the measurement date of equity instruments other than share options forfeited and cancelled during the period. Outstanding, beginning of year (in shares) Outstanding, end of year (in shares) Number Of Vested Outstanding Share Options The number of vested share options outstanding in a share-based payment arrangement. Market price multiplier, number of shares (in shares) Liability Accounted Awards, Market Price Multiplier, Number of Shares Liability Accounted Awards, Market Price Multiplier, Number of Shares Unissued Subordinate Voting Shares Reserved for Issuance Under our Share-based Compensation Plans Unissued Subordinate Voting Shares Reserved for Issuance Under our Share-based Compensation Plans [Member] Unissued Subordinate Voting Shares Reserved for Issuance Under our Share-based Compensation Plans Aggregated time bands Aggregated time bands [member] Acquisition with aggregate cash consideration greater than $60 million If Acquisition With Aggregate Cash Consideration In Excess Of60 Million Occurs In Any Twelve Month Period [Member] This member stands for the scenario when an acquisition with an aggregate cash consideration in excess of $60 million occurs in any twelve-month period. Business Contact Business Contact [Member] Prepaid lease deposits and other Prepaid Lease Deposits and Other Prepaid Lease Deposits and Other Number of customers accounting for more than 10% of revenues Concentrations Of Risk, Operating Revenues, Number of Major Customers The number of customers representing more than 10% of operating revenues. Income tax expense Adjustments for income tax expense Derivative assets Derivatives [member] Debt and equity issue costs Temporary Differences From Debt And Equity Issue Cost [Member] This member stands for temporary differences from debt and equity issue cost. Buildings and leasehold improvements Buildings [member] Temporary differences Disclosure of deferred taxes [text block] Accumulated depreciation Accumulated depreciation, amortisation and impairment [member] Arising from the origination and reversal of temporary differences Deferred tax expense (income) relating to origination and reversal of temporary differences CASH POSITION Cash Position [Abstract] No definition. Number of restricted share units - Non-vested IFRS Share-based Compensation Arrangement By Share-based Payment Award Equity Instruments Other Than Options Non-vested [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Past billing date status [Axis] Past billing date status [Axis] n/a Share-based payment arrangements Share-based payment arrangements [member] Revenue Disclosure of revenue from contracts with customers [text block] Goods and services purchased from Purchase Of Goods And Services, Related Party Transactions The amount of goods and services purchased by the entity in related party transactions. Disclosure of other provisions [table] Disclosure of other provisions [table] Depreciation Depreciation expense Net long-lived assets Net Long Lived Assets The amount of net long-lived assets of the entity. Disclosure of geographic information Disclosure of geographical areas [line items] Currency risk related to purchases Currency Risk Purchase Transactions [Member] This member stands for a type of market risk representing the risk that future cash flows related to purchases denominated in a foreign currency will fluctuate because of changes in foreign exchange rates. Beginning of year End of year Liabilities arising from financing activities Document Transition Report Document Transition Report Property, plant and equipment Property, plant and equipment [member] Entity's total for related parties Entity's total for related parties [member] Granted (in shares) Number of other equity instruments granted in share-based payment arrangement (in shares) Number of other equity instruments granted in share-based payment arrangement Disclosure of detailed information about intangible assets [table] Disclosure of detailed information about intangible assets [table] TOTAL WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract] Contributed surplus Share premium [member] Effective interest rate Borrowings, Effective Interest Rate Borrowings, Effective Interest Rate Share option awards Share Option Awards [Member] This member stands for share option awards. Grant-date fair value Disclosure Of Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Maximum aggregate amount of credit facility Total IFRS Line Of Credit Facility Maximum Borrowing Capacity Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. For current reporting year Current tax expense (income) Types of hedges [axis] Types of hedges [axis] Item that will not be subsequently reclassified to income Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] Disclosure of terms and conditions of share-based payment arrangement [abstract] Disclosure of terms and conditions of share-based payment arrangement [abstract] Entity Address, Country Entity Address, Country Post-employment pension and other benefits Post Employment Pension and Other Benefits The amount of expense relating to post employment pension and other benefits. Diluted earnings per share (in dollars per share) Diluted earnings (loss) per share Credit facility Telus International Cda Inc. Credit Facility [Member] This member stands for TELUS International (Cda) Inc. credit facility. Pensions—defined contribution Defined benefit pension expense Defined benefit pension plan, expenses incurred Post-employment benefit expense, defined contribution plans Contingent liabilities Disclosure of contingent liabilities [text block] Contractual maturities, non-derivative liabilities Undiscounted contractual maturities Non-derivative financial liabilities, undiscounted cash flows Goods and services purchased Goods And Services Purchased The amount of expense incurred for goods and services purchased. Additions Additional provisions, other provisions Adjustments recognized in the current year for income tax of prior years Tax Effect of Current Period Adjustments For Tax Of Prior Periods Tax effect of adjustments recognized in the current period for income taxes of prior periods. Schedule of the reconciliations of the denominators of the basic and diluted per share computations Earnings per share [text block] Number of reporting segments Number of Reporting Segments Number of Reporting Segments Schedule of additional information for statements of financial position Disclosure of additional information about understanding financial position and liquidity of entity [text block] Acquisition-date fair value of total consideration transferred [abstract] Acquisition-date fair value of total consideration transferred [abstract] Additions from acquisition Acquisitions through business combinations, intangible assets and goodwill Related party transactions Disclosure of transactions between related parties [line items] Disclosure of detailed information about borrowings [abstract] Disclosure of detailed information about borrowings [abstract] Net income Profit (loss) of acquiree since acquisition date Additional financial information Supplemental Financial Statement Disclosures [Text Block] The entire disclosure of supplemental financial statement disclosures. Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Other long-term liabilities Other non-current liabilities Share options granted (in shares) Granted (in shares) Number of share options granted in share-based payment arrangement Schedule of interest expense and foreign exchange Schedule Of Detailed Information About Interest Expense And Foreign Exchange, Disclosure, Explanatory [Table Text Block] The disclosure of detailed information about interest expense and foreign exchange. Foreign exchange Increase (decrease) through net exchange differences, property, plant and equipment Goodwill Goodwill recognised as of acquisition date Total current assets Current assets recognised as of acquisition date Exchange [Domain] Exchange [Domain] Indefinite Indefinite [Member] Indefinite Senior Leadership Team Key management personnel of entity or parent [member] Document Period End Date Document Period End Date Philippines PHILIPPINES Schedule of transactions with TELUS Corporation Disclosure of transactions between related parties [text block] Weighted average remaining contractual life Weighted average remaining contractual life of outstanding share options Due from affiliated companies Due from Current receivables due from related parties Outstanding, beginning of year (in dollars per share) Outstanding, end of year (in dollars per share) Weighted average exercise price of share options outstanding in share-based payment arrangement Tax losses incurred for which no deferred tax asset is recognized Unused tax losses for which no deferred tax asset recognised Common Class C to Common Class E Common Class C to Common Class E [Member] Common Class C to Common Class E Business combinations [axis] Business combinations [axis] Payments (made) collected by related parties on our behalf and other adjustments Payments Made By Related Parties On Company's Behalf Amount of payments made by related parties on the Company's behalf. Shares issued for acquisition (in shares) Number of instruments or interests issued or issuable Disclosure of geographical areas [table] Disclosure of geographical areas [table] Changes in business combination-related provisions Adjustments For Changes In Business Combination Related Provisions Amount of adjustments for change in provisions for business combinations to reconcile profit (loss) to net cash flow from (used in) operating activities. Property, plant and equipment, net Property, plant and equipment at beginning of period Property, plant and equipment at end of period Property, plant and equipment Basis point change of reasonably possible increase in unobservable input, liabilities Basis Point Change of Reasonably Possible Increase in Unobservable Input, Liabilities Basis Point Change of Reasonably Possible Increase in Unobservable Input, Liabilities Percentage of reasonably possible increase in market risk variable Percentage of reasonably possible increase in unobservable input, liabilities Common shares sold (in shares) Common Shares Sold Common Shares Sold Class A common shares Class A Ordinary Shares [Member] This member stands for Class A ordinary shares. Tax rate effect for other (as a percent) Other tax rate effects for reconciliation between accounting profit and tax expense (income) Identifiable assets acquired recognized as of acquisition date Identifiable Assets Acquired Recognized As Of Acquisition Date Identifiable Assets Acquired Recognized As Of Acquisition Date Deferred income taxes Deferred tax assets Deferred tax assets Other long-term liabilities Adjustments For Increase Decrease In Other Noncurrent Liabilities Adjustments for increase (decrease) in other non-current assets to reconcile profit (loss) to net cash flow from (used in) operating activities. Number of months base salary considered for severance payments Key managerial personnel, severance payments, number of months base salary considered Number of months' of base salary, benefits and accrual of pension service in lieu of notice, to be considered for severance payments if an executive's employment is terminated without cause. Disclosure of disaggregation of revenue from contracts with customers Disclosure of disaggregation of revenue from contracts with customers [line items] Schedule of long-term debt maturities Disclosure of detailed information about long-term debt maturities [Table Text Block] The disclosure of detailed information about long-term debt maturities. Depreciation, amortization and impairment Description of accounting policy for depreciation expense [text block] Current portion of provisions Current Other current provisions Exercised (in dollars per share) Weighted average exercise price of share options exercised in share-based payment arrangement Salaries and benefits Disclosure of employee benefits [text block] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Statement of cash flows [abstract] Statement of cash flows [abstract] Non-current liabilities recognised as of acquisition date Non-current liabilities recognised as of acquisition date COMPREHENSIVE INCOME Comprehensive income OTHER (INCOME) EXPENSES Ifrs Nonoperating Income (Expense) [Abstract] No definition available. Operating cash flow to debt service ratio Ratio of operating cash flow to debt service ratio Operating cash flows divided by interest and scheduled principal repayment. Dilutive effect of provisions for written put options (in shares) Dilutive effect of other instruments on weighted average number of ordinary shares Granted (in USD and CDN dollars per share) Grant-date-fair-value of awarded units (in dollars per share) Weighted Average Fair Value At Measurement Date Other Equity Instruments Granted In Period The weighted average fair value at the measurement date of equity instruments other than share options granted during the period. Cash and cash equivalents Cash and cash equivalents, beginning of year Cash and cash equivalents, end of year Cash and cash equivalents Gain (loss) reclassified from other comprehensive income to income (effective portion) Reclassification adjustments on cash flow hedges, net of tax Document Annual Report Document Annual Report Number of operating segments Operating Segments, Number Operating Segments, Number Change in associated non-cash investing working capital Increase (Decrease) in Non-cash Investing Working Capital The increase (decrease) in non-cash investing working capital. Share option awards - Canadian $ denominated Share Option Awards Canadian Dollar Denominated [Member] This member stands for share option awards, Canadian $ denominated. Total Non-current liabilities Revision of Prior Period [Axis] Revision of Prior Period [Axis] Cover [Abstract] Cover [Abstract] Rate reconciliations IFRS Schedule Of Effective Income Tax Rate Reconciliation [Table Text Block] Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pre-tax income from continuing operations. Total assets Assets United States UNITED STATES Disclosure of analysis of other comprehensive income by item [abstract] Disclosure of analysis of other comprehensive income by item [abstract] Price (in usd/eur per share) Derivative Weighted Average Price Per Unit The price of a derivative instrument used to manage changes in share-based compensation costs. Basic earnings per share [abstract] Basic earnings per share [abstract] Total Current tax expense (income) and adjustments for current tax of prior periods Non-current liabilities, notional amount Notional Amount Noncurrent Derivative Liabilities The nominal or face amount of a derivative instrument classified as a noncurrent liability, used to calculate payments made on that instrument. Future cash outflows in respect of composite long-term debt principal repayments Notional amount Other Deferred Expenses Non Current The amount of deferred expenses classified as non-current. Google Google [Member] Google Gross borrowings Outstanding Gross Borrowings Borrowings that are outstanding at the reporting date, excluding unamortized costs. Net assets acquired Consideration transferred, acquisition-date fair value FINANCING ACTIVITIES Cash flows from (used in) financing activities [abstract] Depreciation Depreciation, property, plant and equipment Derivative assets Non-current assets, fair value and carrying value Non-current derivative financial assets Common shares Issued capital [member] 2026 Later than two years and not later than three years [member] Entity Current Reporting Status Entity Current Reporting Status Number of share-based compensation awards issued (in shares) Number of instruments granted in share-based payment arrangement Consolidation Disclosure of basis of consolidation [text block] Class E common shares Class E Ordinary Shares [Member] This member stands for Class E ordinary shares. Non-current assets, notional amount Notional Amount, Non-Current Derivative Assets Notional Amount, Non-Current Derivative Assets Basic (in shares) Weighted average number of equity shares outstanding (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share Consolidated Entities [Domain] Consolidated Entities [Domain] Right-of-use lease assets Right-of-use assets [member] Net deferred income tax asset (liability) Unused tax losses [member] Phantom Performance Share Units Phantom Performance Share Units [Member] Phantom Performance Share Units Cash payments for capital assets Cash Payments For Capital Assets The cash outflow for the purchases of capital assets, classified as investing activities. Derivative liabilities Non-current liabilities, fair value and carrying value Non-current derivative financial liabilities Provisions Adjustments for provisions Auditor Information [Abstract] Auditor Information Philippine peso Philippine Peso [Member] This member stands for Philippine peso. share-based compensation Disclosure of terms and conditions of share-based payment arrangement [line items] Scenario [Domain] Scenario [Domain] El Salvador EL SALVADOR Reconciliation of effective tax rate (as a percent) Reconciliation Of Applicable Tax Rates [Abstract] No definition available. Current liabilities Current liabilities [abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] OPERATING EXPENSES Expenses by nature [abstract] Entity Voluntary Filers Entity Voluntary Filers Summary of significant accounting policies Disclosure of material accounting policy information [text block] Term of master service agreement Term of Agreement With Related Parties Period of agreement entered with related parties. Disclosure of detailed information about intangible assets [abstract] Disclosure of detailed information about intangible assets [abstract] Income taxes paid, net Income taxes paid (refund), classified as operating activities Employee benefits expense - gross Employee benefits expense [Abstract] Information pertaining to employee benefits expense. Schedule of acquisition costs Disclosure of detailed information about business combination [text block] Cumulative foreign currency translation adjustment Cumulative foreign currency translation adjustment [Abstract] Cumulative foreign currency translation adjustment Interest rate swap agreement Interest rate swap contract [member] Share capital Share capital [member] Due from affiliated companies Trade And Other Receivables From Related Parties [Member] This member stands for trade and other receivables from related parties. Changes in business combination-related provisions Changes In Business Combination Related Provisions Amount of expense (income) related to adjustment for change in provisions for business combinations. Multiple voting shares Multiple Voting Shares [Member] This member stands for multiple voting shares. Net income sensitivity to decrease in risk variable Increase Decrease in Net Income Due to Reasonably Possible Decrease in Risk Variable The increase (decrease) in net income, as a result of an decrease in the relevant risk variable that was reasonably possible at the end of the reporting period. Schedule of useful lives of property, plant, and equipment, right-of-use lease assets and intangible assets Disclosure of depreciation and amortisation expense [text block] Matching contribution to employees' 5% contribution (in percent) Defined Contribution, Employer Matching Contribution To Employee's Five Percent Contribution The percentage of employer matching contribution to employee's first 5% contribution to defined contribution plan. OPERATING INCOME Profit (loss) from operating activities Credit risk Disclosure of financial assets [line items] Reconciliation of effective tax rate Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Shares exchanged or redesignated (in shares) Number of Shares Exchanged or Redesignated Number of Shares Exchanged or Redesignated Amortization of financing fees and other Amortization Of Financing Fees And Other Amortization Of Financing Fees And Other Total Operating expense Amortization of intangible assets Amortization Amortisation, intangible assets other than goodwill Revolving component Telus International Cda Inc Revolving Credit Facility [Member] This member stands for the TELUS International (Cda) Inc. revolving component of the credit facility. Tax rate effect of current period adjustments for tax of prior periods (as a percent) Tax Rate Effect Of Current Period Adjustments For Tax Of Prior Periods Tax Rate Effect Of Current Period Adjustments For Tax Of Prior Periods Beginning of year Previously Reported [Member] Beginning balance (in shares) Ending balance (in shares) Number of shares outstanding Income tax expense Income tax expense Tax expense (income) Prepaid and other assets Current prepayments Issued or received Increase Decrease Issuing Or Receiving Liabilities Arising From Financing Activities The increase (decrease) in liabilities arising from financing activities resulting from debt issued or received. Deferred debt transaction costs Deferred Debt Transaction Costs [Member] This member stands for deferred debt transaction costs. Outstanding, beginning of year (in USD and CDN dollars per share) Outstanding, end of year (in USD and CDN dollars per share) Weighted Average Grant Date Fair Value Other Equity Instruments The weighted average grant date fair value of equity instruments other than share options. Non-current assets Non-current assets [abstract] Revenue arising from contracts with customers Revenue of acquiree since acquisition date Amount arising Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans Portion of consideration paid (received) consisting of cash and cash equivalents Portion of consideration paid (received) consisting of cash and cash equivalents Disclosure of nature and extent of risks arising from financial instruments [table] Disclosure of nature and extent of risks arising from financial instruments [table] Vested (in USD and CDN dollars per share) Weighted Average Fair Value At Measurement Date Other Equity Instruments Vested In Period The weighted average fair value at the measurement date of equity instruments other than share options vested during the period. Other comprehensive income sensitivity to increase in risk variable Increase Decrease in Other Comprehensive Income Due to Reasonably Possible Increase in Risk Variable The increase (decrease) in other comprehensive income, as a result of an increase in the relevant risk variable that was reasonably possible at the end of the reporting period. Accounts receivable Total Trade and other current receivables Tax rate for Income tax expense per consolidated statements of income and other comprehensive income (as a percent) Average effective tax rate Intangible assets and goodwill Intangible assets and goodwill [member] Income taxes Income tax relating to remeasurements of defined benefit plans included in other comprehensive income Earnings per share Disclosure of earnings per share [text block] Graded-Vesting Method Graded-Vesting Method [Member] Graded-Vesting Method Obligation for defined benefit pension plans Net defined benefit liability (asset) Short-term benefits Short-term employee benefits expense Classes of other provisions [axis] Classes of other provisions [axis] Disclosure of transactions between related parties [table] Disclosure of transactions between related parties [table] Business acquisition consideration transferred, value of shares Subordinate voting shares Business Acquisition Consideration Transferred, Value Of Shares Business Acquisition Consideration Transferred, Value Of Shares Use Provision used, other provisions Disclosure of operating segments [abstract] Disclosure of operating segments [abstract] Accrued liabilities Accruals classified as current Vested (in shares) Number Of Other Equity Instruments Nonvested In Sharebased Payment Arrangement Vested During The Period The number of other equity instruments (i.e. other than share options) non-vested in a share-based payment arrangement, that vested during the period. Schedule of authorized share capital Disclosure of classes of share capital [text block] Unused Tax Losses Dependent on Future Earnings Unused Tax Losses Dependent on Future Earnings [Member] Unused Tax Losses Dependent on Future Earnings Net change in non-cash operating working capital Net change in non-cash operating working capital Increase (decrease) in working capital Tax rate effect for non-tax deductible items (as a percent) Tax rate effect of expense not deductible in determining taxable profit (tax loss) Total Purchase of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets Ownership interest maintained by acquired entity management Ownership Interest Maintained By Acquired Entity Management Ownership Interest Maintained By Acquired Entity Management Other Other tax effects for reconciliation between accounting profit and tax expense (income) Basic earnings per share (in dollars per share) Basic earnings (loss) per share Employee defined benefit plan re-measurements Net Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Currency risk related to business acquisition Currency Risk Business Acquisition [Member] This member stands for a type of market risk representing the risk that the fair value or future cash flows related to business acquisition denominated in a foreign currency will fluctuate because of changes in foreign exchange rates. Other long-term assets Other non-current assets Discount rates applied to cash flow projections Discount rate applied to cash flow projections Current assets, notional amount Notional Amount, Current Derivative Assets The nominal or face amount of a derivative instrument classified as a current asset, used to calculate payments made on that instrument. Long-term debt issued Proceeds from non-current borrowings Accounts receivable – unbilled Current Gross Trade Receivables, Unbilled Current Gross Trade Receivables, Unbilled Disclosure of transactions between related parties [abstract] Disclosure of transactions between related parties [abstract] Telus Phantom Restricted Share Telus Phantom Restricted Share [Member] This member stand for TELUS phantom restricted share Subsidiaries Subsidiaries [Member] Share-based compensation Adjustments for share-based payments Maximum exposure (excluding income tax effects) to credit risk Maximum exposure to credit risk Disclosure of detailed information about financial instruments [abstract] Disclosure of detailed information about financial instruments [abstract] Interest expense Adjustments for interest expense Common shares issued (in shares) Shares issued (in shares) Common Shares Issued The amount of Common shares issued. Schedule of other provisions Disclosure of other provisions [text block] Banking, Financial Services and Insurance Banking, Financial Services And Insurance [Member] Banking, Financial Services And Insurance Percentage of subordinate voting share Business Acquisition Consideration Transferred, Percentage Of Shares Business Acquisition Consideration Transferred, Percentage Of Shares Exercised (in USD and CDN dollars per share) Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement Long-term debt, excluding leases Longterm Borrowings Excluding Lease Liabilities [Member] This member stands for long-term borrowings excluding lease liabilities. Interest effect and other Interest Effect, Other Provisions Interest Effect, Other Provisions Foreign exchange gain Total Foreign exchange gain (loss) Europe Europe [Member] Owned assets Owned Assets Recognized As Of Acquisition Date Owned Assets Recognized As Of Acquisition Date Property, plant and equipment Reconciliation of changes in property, plant and equipment [abstract] Disclosure Of Additional Statement Of Financial Position Information [Abstract] Disclosure Of Additional Statement Of Financial Position Information [Abstract] This concept does not have any references. Current assets Current assets [abstract] Share-based compensation Expense from share-based payment transactions with employees Categories of related parties [axis] Categories of related parties [axis] Other Other current payables Reconciliation of temporary differences Reconciliation of changes in deferred tax liability (asset) [abstract] Vesting Method [Axis] Vesting Method [Axis] Vesting Method Changes in owners' equity Statement of changes in equity [line items] Central America, South America, Africa Central America, South America, Africa [Member] Central America, South America, Africa Classes of financial assets [axis] Classes of financial assets [axis] Other Increase (decrease) through other changes, liabilities arising from financing activities ASSETS Assets [abstract] Assets [abstract] Amount arising Other comprehensive income, before tax, cash flow hedges Carrying value of business acquired less fair value of consideration paid (in shares) Carrying Value Of Business Acquired Less Fair Value Of Consideration Paid, Shares Carrying Value Of Business Acquired Less Fair Value Of Consideration Paid, Shares Changes In Owners' Equity [Roll Forward] Changes In Owners' Equity [Roll Forward] Changes In Owners' Equity Foreign tax differential Tax effect of foreign tax rates Entity File Number Entity File Number Cash payments for capital assets and software Purchase Of Capital Assets And Software The cash outflow for the purchase of capital assets and software. Right-of-use lease assets Right-Of-Use Lease Assets Recognized As Of Acquisition Date Right-Of-Use Lease Assets Recognized As Of Acquisition Date Amounts to be exchanged, pay Interest rate swap agreement Contractual amounts to be exchanged in derivative financial instrument for which gross cash flows are exchanged INVESTING ACTIVITIES Cash flows from (used in) investing activities [abstract] Playment Playment [Member] Playment NET INCOME Net income Profit (loss) Auditor Firm ID Auditor Firm ID 30-60 days past billing date 30-60 Days [Member] 30-60 Days Entity Shell Company Entity Shell Company Phantom restricted share units Phantom Restricted Share Units [Member] This member stands for phantom restricted share units. Performance Share Units Performance Share Units [Member] Performance Share Units Income and other taxes Description of accounting policy for income tax [text block] Revaluations Increase through adjustments arising from passage of time, other provisions Accumulated balance at beginning Accumulated balance at ending Reserve of exchange differences on translation Phantom share option awards Phantom Share Option Awards [Member] This member stands for phantom share option awards. Share-based Payment, Tranche One Share-based Payment, Tranche One [Member] Share-based Payment, Tranche One Exercise price of options (in dollars per share) Exercise price, share options granted Withholding taxes paid related to net share settlement of equity awards Payments for Withheld Taxes Related to Net Share Settlement of Equity Awards Payments for Withheld Taxes Related to Net Share Settlement of Equity Awards Statement of changes in equity [abstract] Statement of changes in equity [abstract] Interest on long-term debt, excluding lease liabilities Interest Expense On Borrowings Long Term, Excluding Lease Liabilities The amount of interest expense related to long-term debt, net of interest capitalized to indefinite-lived intangible assets, excluding lease liabilities. Share issuance costs Payments for share issue costs Cash and cash equivalents Cash And Temporary Investments Net [Member] This member stands for cash and temporary investments, net of outstanding items, including cheques written but not cleared. Contact Personnel Name Contact Personnel Name Major business combination Major business combination [member] Net debt to EBITDA ratio Net Debt To EBITDA Ratio Ratio of net debt to earnings before interest, depreciation, taxes, and amortization (EBIDTA). Applicable statutory rate (as a percent) Applicable tax rate Outstanding, beginning of year (in shares) Outstanding, end of year (in shares) Number of other equity instruments exercisable in share-based payment arrangement Basis of presentation Disclosure of basis of preparation of financial statements [text block] Major components of tax expense (income) [abstract] Major components of tax expense (income) [abstract] Employee related Restructuring provision [member] Document Registration Statement Document Registration Statement Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Advance billings Current advances received, representing current contract liabilities for performance obligations satisfied at point in time Fully diluted net income Profit (loss), attributable to ordinary equity holders of parent entity, used in calculating diluted earnings per share Benefits Post-employment benefit expense in profit or loss, defined benefit plans Cash payments for other assets Purchase of other long-term assets, classified as investing activities Assets Assets [member] Schedule of Intangible assets and goodwill Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Disclosure of other provisions [abstract] Disclosure of other provisions [abstract] Share-based compensation Increase (decrease) through share-based payment transactions, equity Long-term debt maturities Disclosure of detailed information about borrowings [line items] Disclosure of detailed information about borrowings [line items] New York Stock Exchange NEW YORK STOCK EXCHANGE, INC. [Member] Fair value of shares issued Equity interests of acquirer Interest paid on credit facilities Interest paid, classified as financing activities Share-based compensation Description of accounting policy for share-based payment transactions [text block] Other market risk Other price risk [member] Other Other Geographical Areas [Member] This member stands for other geographical areas. Cash payments for capital assets Cash Payments For Capital Assets [Abstract] n/a Managed It Services Managed It Services [Member] This member stands for Managed IT Services. WillowTree WillowTree [Member] WillowTree Income and other taxes receivable and payable, net Increase Decrease In Accrued Taxes Payable The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes. OPERATING ACTIVITIES Cash flows from (used in) operating activities [abstract] 2024 Not later than one year [member] Lease liabilities Description of accounting policy for leases [text block] Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Subordinate voting shares Subordinate Voting Shares [Member] This member stands for subordinate voting shares. Second Year Later than one year [member] Share-based Payment, Tranche Two Share-based Payment, Tranche Two [Member] Share-based Payment, Tranche Two Items that may subsequently be reclassified to income Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] Total Current assets Items that may subsequently be reclassified to income Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] Accounts receivable – billed Current Gross Trade Receivables, Billed Current Gross Trade Receivables, Billed Current maturities of long-term debt Current Current portion of non-current borrowings Thereafter Later Than Two Years [Member] This member stands for a time band of later than two years. Comprehensive income sensitivity to increase in risk variable Increase Decrease in Comprehensive Income Due to Reasonably Possible Increase in Risk Variable The increase (decrease) in comprehensive income, as a result of an increase in the relevant risk variable that was reasonably possible at the end of the reporting period. Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] Classes of intangible assets other than goodwill [axis] Classes of intangible assets other than goodwill [axis] Other provisions Other provisions [member] Schedule of contractual maturities of undiscounted financial liabilities, non-derivative Disclosure of maturity analysis for non-derivative financial liabilities [text block] Additions from acquisition Acquisitions through business combinations, property, plant and equipment Share option awards, Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares [Roll Forward] A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. Risk free interest rate Risk free interest rate, share options granted Cash transferred Cash transferred Entity Address, State or Province Entity Address, State or Province Unit Appreciation Rights Unit Appreciation Rights [Member] Unit Appreciation Rights Concentrations of risk Concentrations of risk [member] Provisions New provisions, other provisions Interest rate on borrowings Fixed interest rate Borrowings, interest rate Number of shares issued in public offering (in shares) Number of Shares Issued in Public Offering Number of Shares Issued in Public Offering Share Option Awards Settled With Shares From Treasury Share Option Awards Settled With Shares From Treasury [Member] Share Option Awards Settled With Shares From Treasury Hedges [member] Hedges [member] Categories of financial assets [axis] Categories of financial assets [axis] Liabilities arising from financing activities Liabilities arising from financing activities [member] Unissued Subordinate Voting Shares Reserved for Issuance Under Employee Share Purchase plan Unissued Subordinate Voting Shares Reserved for Issuance Under Employee Share Purchase plan [Member] Unissued Subordinate Voting Shares Reserved for Issuance Under Employee Share Purchase plan Less than 30 days past billing date Less Than 30 Days [Member] Less Than 30 Days Item never reclassified to income Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] Class D common shares Class D Ordinary Shares [Member] This member stands for Class D ordinary shares. Disclosure of detailed information about financial instruments [table] Disclosure of detailed information about financial instruments [table] Interest rate risk non fixed rate credit facility amounts drawn Interest Rate Risk Non Fixed Rate Credit Facility Amounts Drawn [Member] This member stands for the type of risk that the fair value or future cash flows of a financial instrument which relates to non-fixed credit facility amounts drawn will fluctuate because of changes in market interest rates. Accounts receivable Trade receivables [member] Equity share option awards Equity Share Option Awards [Member] This member stands for equity share option awards. Total items never subsequently reclassified to income Other comprehensive income that will not be reclassified to profit or loss, net of tax Deferred debt transaction costs Ifrs Deferred Finance Costs Net Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Identifiable intangible assets recognised as of acquisition date Identifiable intangible assets recognised as of acquisition date Current income tax expense (recovery) Current tax expense (income) and adjustments for current tax of prior periods [abstract] Disclosure of financial liabilities [table] Disclosure of financial liabilities [table] Cliff-Vesting Method Cliff-Vesting Method [Member] Cliff-Vesting Method Schedule of contractual maturities of undiscounted financial liabilities, derivative Disclosure of maturity analysis for derivative financial liabilities [text block] Disclosure of quantitative information about leases for lessee [abstract] Disclosure of quantitative information about leases for lessee [abstract] Hedge accounting Description of accounting policy for hedging [text block] Minimum annual spend amount Minimum Agreement Annual Spend Amount with Related Parties Minimum annual spend amount in relation to the agreement entered with related parties. Network assets Network Assets [Member] Network Assets Deferred tax expense (income) Deferred tax expense (income) Fair values assigned to assets acquired and liabilities assumed in acquisition Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [abstract] Defined contribution pension plans IFRS Defined Contribution Pension Plans [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Property, plant and equipment; intangible assets Description of accounting policy for property, plant and equipment [text block] Deferred income taxes Deferred tax liabilities Disclosure of reconciliation of liabilities arising from financing activities [table] Disclosure of reconciliation of liabilities arising from financing activities [table] Interest accretion on provisions Interest Accretion on Provisions Interest Accretion on Provisions 120000000 Restricted Stock Unit Nominal Value In Equity Shares The nominal value of restricted share units expressed in number of equity shares. Percentage of principal advance required to be repaid each year of the term of the agreement Percentage of principal advance to repay, borrowings Percentage of principal advance to that is required to be repaid each year of the term of the agreement. Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] REVENUE Revenue from contracts with customers Revenue from contracts with customers Revenue from contracts with customers Minimum Bottom of range [member] Written put options Written Put Option Provision [Member] This member stands for a provision for written put options granted to shareholders of acquired entities. Other long-term assets Adjustments For Decrease Increase In Other Noncurrent Assets Adjustments for decrease (increase) in other non-current assets to reconcile profit (loss) to net cash flow from (used in) operating activities. Customer accounts receivable – billed, net of allowance for doubtful accounts Current Trade Receivables, Billed Current Trade Receivables, Billed Number of shares converted to subordinate voting shares (in shares) Number of shares converted to subordinate voting shares (in shares) Number Of Shares Converted Number of shares converted in a noncash (or part noncash) transaction. Brand Brand names [member] Gross proceeds from issuing shares Gross Proceeds from Issuing Shares Gross Proceeds from Issuing Shares Income taxes Income tax relating to exchange differences on translation of foreign operations included in other comprehensive income Earn-out payout Share Based Compensation Arrangement By Share Based Payment Award, Liabilities To Be Paid Share Based Compensation Arrangement By Share Based Payment Award, Liabilities To Be Paid Foreign exchange movement Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities Entity Filer Category Entity Filer Category Common Share Ordinary shares [member] Repayment of long-term debt Repayments of non-current borrowings Vesting [Domain] Vesting Options [Domain] Vesting [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Provisions Disclosure of other provisions, contingent liabilities and contingent assets [text block] Standard operating procedures Standard Operating Procedures [Member] This member stands for standard operating procedures. Address Type [Domain] Address Type [Domain] Retained earnings (deficit) Retained earnings [member] Products and services [axis] Products and services [axis] Classes of property, plant and equipment [axis] Classes of property, plant and equipment [axis] Adjustments: Adjustments to reconcile profit (loss) [abstract] Net change in non-cash operating working capital Net Change in Non-cash Operating Working Capital [Abstract] This concept does not have any references. Asia-Pacific Asia Pacific [Member] Carryforward Period [Axis] Carryforward Period [Axis] Carryforward Period Liabilities from share-based payment transactions Liabilities from share-based payment transactions Change in unrealized fair value of cash flow hedges Change in unrealized fair value of derivatives [Abstract] Change in unrealized fair value of derivatives Vested (in shares) Number Of Vested Share Options Vested In Share-Based Payment Arrangement The number of vested share options vested in a share-based payment arrangement. Other currencies Other Currencies [Member] n/a Available Undrawn borrowing facilities Capital structure financial policies Disclosure of objectives, policies and processes for managing capital [text block] Accumulated other comprehensive income (loss) Accumulated other comprehensive income [member] Amount arising, accumulated other comprehensive income Other comprehensive income, before tax Other lenders Lenders In Syndicate Other Than Telus Corporation [Member] This member relates to lenders in the syndicate of financial institutions other than TELUS Corporation. Share split ratio Common Share Split Ratio The number of shares that will replace a single share in the share split transaction. Change in unrealized fair value of derivatives designated as cash flow hedges Net Other comprehensive income, net of tax, cash flow hedges Non-capital loss carried forward Temporary Differences From Non Capital Loss Carried Forward [Member] This member stands for temporary differences from non-capital loss carried forward. European euros Euro Member Countries, Euro Social Media Company Social Media Company [Member] Social Media Company Additions Additions other than through business combinations, intangible assets other than goodwill eCommerce and FinTech eCommerce and FinTech [Member] eCommerce and FinTech Schedule of maximum exposure (excluding income tax effects) to credit risk Disclosure of credit risk exposure [text block] Subordinate voting shares converted from multiple voting shares Subordinate Voting Shares converted from Multiple Voting Shares [Member] Subordinate Voting Shares converted from Multiple Voting Shares Income and other taxes payable Income And Other Taxes Payable Recognized As Of Acquisition Date Income And Other Taxes Payable Recognized As Of Acquisition Date Revision of Prior Period [Domain] Revision of Prior Period [Domain] Total intangible assets Intangible assets other than goodwill [member] EARNINGS PER SHARE Earnings per share [abstract] Due to and from affiliated companies, net Adjustments For Adjustments for increase (decrease) in amounts due to and from affiliated companies, net, to reconcile profit (loss) to net cash flow from (used in) operating activities. Accounts payable and accrued liabilities Financial liabilities recognised as of acquisition date Property, plant and equipment and intangible assets subject to amortization Property Plant And Equipment Owned And Intangible Assets Subject To Amortization [Member] Property, plant, and equipment owned; and intangible assets subject to amortization. Common shares converted (in shares) Common Shares Converted Common Shares Converted Phantom restricted share units - US$ denominated Phantom Restricted Share Units Us Dollar Denominated [Member] This member stands for phantom restricted share units, US$ denominated. Foreign exchange gain Gains (Losses) On Exchange Differences On Translation, Recognised In Profit Or Loss, Other Than Derivatives The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions attributable to other than for derivatives. Other receivables Other current receivables Disclosure of detailed information about financial instruments [line items] Disclosure of detailed information about financial instruments [line items] Total Net income Deferred tax expense (income) recognised in profit or loss Past billing date status [Domain] Past billing date status [Domain] Past billing date status [Domain] Statement of changes in equity [table] Statement of changes in equity [table] Proceeds from issuing shares Proceeds from issuing shares Goodwill Goodwill [member] Long-term debt excluding leases Long Term Borrowings Excluding Leases [Member] This member stands for long-term borrowings excluding leases. 2023 Acquisitions 2023 Acquisitions [Member] 2023 Acquisitions Cash provided by operating activities Cash flows from (used in) operating activities Document Fiscal Period Focus Document Fiscal Period Focus Interest expense Disclosure Of Interest Expense And Foreign Exchange, Explanatory [Text Block] The entire disclosure for interest expense and foreign exchange. Long-term debt Long-Term Debt Recognized As Of Acquisition Date Long-Term Debt Recognized As Of Acquisition Date Share Options and Phantom Share Options Share Options and Phantom Share Options [Member] Share Options and Phantom Share Options Revenue recognition Description of accounting policy for recognition of revenue [text block] Crowdsource assets Crowdsource Assets [Member] This member stands for crowdsource assets. Schedule of financial instruments, and the nature of certain risks to which they may be subject Disclosure of nature and extent of risks arising from financial instruments [text block] Current liabilities derivatives Derivative Liabilities Current [Member] This member stands for current liability derivative financial instruments or other contracts within the scope of IFRS 9 with all three of the following characteristics: (a) Their value changes in response to the change in a specified interest rate, financial instrument price, commodity price, foreign exchange rate, index of prices or rates, credit rating or credit index, or other variable, provided in the case of a non-financial variable that the variable is not specific to a party to the contract (sometimes called the 'underlying'); (b) They require no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; (c) They are settled at a future date. [Refer: Financial instruments, class [member]] City Area Code City Area Code Accumulated balance at beginning Accumulated balance at ending Reserve of remeasurements of defined benefit plans Balance at beginning of period Balance at end of period Deferred tax liability (asset) Deferred tax liability (asset) Schedule of disaggregation of revenue Disclosure of disaggregation of revenue from contracts with customers [text block] Document Fiscal Year Focus Document Fiscal Year Focus Dividends (in shares) Number Of Instruments Other Equity Instruments Vested In Lieu Of Dividends Number Of Instruments Other Equity Instruments Vested In Lieu Of Dividends Currency risk Currency risk [member] Increase in revenue Increase In Revenue Of Acquiree Since Acquisition Date Increase In Revenue Of Acquiree Since Acquisition Date Current portion of derivative liabilities Current liabilities, fair value and carrying value Current derivative financial liabilities Amounts due from affiliates, receivable period Amount Receivable, Related Party Transactions, Receivable Period Period during which the receivables from related party transactions are to be received. Changes in liabilities arising from financing activities Changes in liabilities arising from financing activities [abstract] Non- interest bearing financial liabilities Non Interest Bearing Financial Liabilities [Member] This member stands for non-interest bearing financial liabilities. 20 Years 20 Years [Member] 20 Years Number of votes per common share Number Of Vote Per Common Share The number of votes per common share. Disclosure of financial assets [table] Disclosure of financial assets [table] Pension plans Defined benefit plans other than multi-employer plans, state plans and plans that share risks between entities under common control [member] IFRS Defined Contribution Plan [Table] IFRS Defined Contribution Plan [Table] Disclosure of information about defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans. Weighted average fair value assumptions used in the Black-Scholes valuation for stock options Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block] Outside of Canada Other Geographical Areas Outside of Canada [Member] Other Geographical Areas Outside of Canada Borrowings by name Borrowings by name [member] Exchange differences arising from translation of foreign operations Net Other comprehensive income, net of tax, exchange differences on translation of foreign operations Baring Private Equity Asia Baring Private Equity Asia [Member] This member stands for Baring Private Equity Asia. Currency [Axis] Currency [Axis] Payment to acquire non-controlling interest in subsidiary Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities Entity Address, City or Town Entity Address, City or Town Accounts receivable Adjustments for decrease (increase) in trade and other receivables Vesting period Share-Based Compensation Arrangement By Share-based Payment Award, Award Vesting Period Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. Restricted Stock Units Restricted Stock Units [Member] Restricted Stock Units Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] Lease liabilities Lease liabilities Intangible assets and goodwill Disclosure of reconciliation of changes in intangible assets and goodwill [line items] Contingent liabilities Estimated financial effect of contingent liabilities Accumulated balance at beginning, accumulated other comprehensive income Accumulated balance at ending, accumulated other comprehensive income Accumulated other comprehensive income Income and other taxes payable Current tax liabilities, current Network assets Computer Hardware And Network Assets [Member] This member stands for computer hardware and network assets. Expense composition IFRS Schedule Of Components Of Income Tax Expense Benefit [Table Text Block] Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carry-forwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. Document Information [Table] Document Information [Table] Growth rates applied to cash flow projections Growth rate used to extrapolate cash flow projections Healthcare Healthcare [Member] Healthcare Common Class A to Common Class D Common Class A to Common Class D [Member] Common Class A to Common Class D Additions Additions other than through business combinations, property, plant and equipment Currency swap agreement amounts to be exchanged Currency swap contract [member] Liabilities arising from financing activities [axis] Liabilities arising from financing activities [axis] Provisions Description of accounting policy for provisions [text block] Reversals Unused provision reversed, other provisions Disclosure Of Detailed Information On Allowance for Doubtful Accounts Disclosure Of Detailed Information On Allowance for Doubtful Accounts [Table Text Block] Disclosure Of Detailed Information On Allowance for Doubtful Accounts Antidilutive awards (in shares) Instruments With Potential Future Dilutive Effect Not Included In Calculation Of Diluted Earnings Per Share Instruments With Potential Future Dilutive Effect Not Included In Calculation Of Diluted Earnings Per Share Temporary differences Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Leases Disclosure of leases [text block] Disclosure of contingent liabilities [abstract] Disclosure of contingent liabilities [abstract] Toronto Stock Exchange TORONTO STOCK EXCHANGE [Member] Summary of the activity related to restricted share units Disclosure of number and weighted average exercise prices of other equity instruments [text block] Subclassifications of assets, liabilities and equities [abstract] Goodwill impairment Impairment loss recognised in profit or loss, goodwill Document Information [Line Items] Document Information [Line Items] Debt assumed from acquisitions Debt Assumed From Acquisitions [Member] Debt Assumed From Acquisitions Proportion of ownership interest in subsidiary Proportion of ownership interest in subsidiary Class C common shares Class C Ordinary Shares [Member] This member stands for Class C ordinary shares. Dispositions, retirements and other Disposals Retirements And Other Property Plant And Equipment The decrease/(increase) in property, plant and equipment resulting from disposals, retirements and other. Property, plant and equipment, excluding right-of-use assets Purchase of property, plant and equipment, classified as investing activities Income taxes computed at applicable statutory rates Tax expense (income) at applicable tax rate Exercisable, end of year (in shares) Number of share options exercisable in share-based payment arrangement Communications and Media Communications and Media [Member] Communications and Media Payroll and other employee-related liabilities Short-term employee benefits accruals Goodwill Goodwill Entity Registrant Name Entity Registrant Name Liabilities Liabilities [abstract] Redemptions, repayments or payments Increase Decrease Through Financing Redemptions Repayments Or Payments Liabilities Arising From Financing Activities The increase (decrease) in liabilities arising from financing activities resulting from debt redemptions, repayments or payments. Credit facility Credit Facility [Member] This member stands for the credit facility borrowing. 61-90 days past billing date 61-90 Days [Member] 61-90 Days Subordinate Voting Shares issued in public offering Value of Shares Issued in Public Offering Value of Shares Issued in Public Offering Disclosure of reconciliation of changes in intangible assets and goodwill [table] Disclosure of reconciliation of changes in intangible assets and goodwill [table] Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Variable payout (as a percent) Variable Payout Of Awards In Share-based Payment Arrangement The percentage of variable payout of actual awards in a share-based payment arrangement. Auditor Name Auditor Name Disclosure of analysis of other comprehensive income by item [table] Disclosure of analysis of other comprehensive income by item [table] Notes to Consolidated Financial Statements Notes to Consolidated Financial Statements No definition available. Accounts payable and accrued liabilities Total trade and other current payables Trade and other current payables Entity Central Index Key Entity Central Index Key LIABILITIES AND OWNERS’ EQUITY Equity and liabilities [abstract] Common Share capital Disclosure of classes of share capital [line items] Subsidiaries of TELUS Corporation Subsidiaries Of Parent [Member] This member stands for subsidiaries of parent. Schedule of property, plant and equipment Disclosure of detailed information about property, plant and equipment [text block] All others Other Revenue [Member] Other Revenue Exercise price (in dollars per share) Exercise price of outstanding share options Other comprehensive income Income taxes, accumulated other comprehensive income Income tax relating to components of other comprehensive income Business acquisition [line items] Disclosure of detailed information about business combination [line items] More than 90 days past billing date More Than 90 Days [Member] More Than 90 Days Employee future benefits Employee future benefits n/a Geographical areas Geographical areas [member] Entity [Domain] Entity [Domain] Shares issued (in shares) Number of shares issued Equity Equity [member] Amendment Flag Amendment Flag Use of estimates and judgments Disclosure of accounting judgements and estimates [text block] Legal Entity [Axis] Legal Entity [Axis] Financial instruments and management of financial risks Disclosure of financial instruments [text block] Accounts payable and accrued liabilities Trade and other current receivables [abstract] Foreign currency translation Increase (decrease) through net exchange differences, deferred tax liability (asset) Billed and unbilled trade receivables and other receivables Trade and Other Current Receivables, Before Allowance For Credit Losses Trade and Other Current Receivables, Before Allowance For Credit Losses Number of vesting installments Share-Based Compensation Arrangement By Share-based Payment Award, Number of Vesting Installments Share-Based Compensation Arrangement By Share-based Payment Award, Number of Vesting Tranches Net pension and share- based compensation amounts Net Pension And Sharebased Compensation Amounts [Member] Net pension and share-based compensation amounts. Vesting [Axis] Vesting Options [Axis] Vesting Options Derivatives used to manage currency risks Gains (Losses) On Exchange Differences On Translation, Recognised In Profit Or Loss For Derivatives The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions attributable to derivatives. Vested (in shares) Number Of Share Options Vested In Share-Based Payment Arrangement The number of share options vested in a share-based payment arrangement. Assets under construction Ifrs Asset Under Construction [Member] Asset in process of being built. Intangible assets and goodwill Disclosure of intangible assets [text block] Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Market risks Disclosure of nature and extent of risks arising from financial instruments [line items] Number of other equity instruments outstanding in share-based payment arrangement (in shares) Outstanding, beginning of year (in shares) Outstanding, end of year (in shares) Number of other equity instruments outstanding in share-based payment arrangement Carrying amount Carrying amount [member] Revenues from services provided to Revenue from rendering of services, related party transactions Gain (Loss) recognized in income on derivatives Gains (losses) on financial assets at fair value through profit or loss, classified as held for trading Share-based compensation (in shares) Increase Decrease Through Share-Based Payment Transactions, Shares Increase Decrease Through Share-Based Payment Transactions, Shares Weighted average interest rate Borrowings weighted average interest rate The weighted average interest rate on borrowings. Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Current liabilities recognised as of acquisition date Current liabilities recognised as of acquisition date Forfeited (in shares) Forfeited (in shares) Number of other equity instruments forfeited in share-based payment arrangement Intangible assets Purchase of intangible assets, classified as investing activities Classes of assets [axis] Classes of assets [axis] Translation of foreign currencies Description of accounting policy for foreign currency translation [text block] Employee future benefit plans Description of accounting policy for employee benefits [text block] Employee future benefits Employee Future Benefits [Text Block] The entire disclosure for employee future benefits. Share option awards - US$ denominated Share Option Awards Us Dollar Denominated [Member] This member stands for share option awards, US$ denominated. Foreign exchange Foreign exchange gain (loss) [abstract] Defined benefit plans [axis] Defined benefit plans [axis] Scenario [Axis] Scenario [Axis] Increase (decrease) in goodwill Increase (decrease) in goodwill INCOME BEFORE INCOME TAXES Profit (loss) before tax Advance billings and customer deposits Increase Decrease In Customer Advances And Deposits The increase (decrease) during the reporting period in the amount of (a) prepayments by customers for goods or services to be provided at a later date, (b) the amount of customer money held in customer accounts, including security deposits, collateral for a current or future transactions, initial payment of the cost of acquisition or for the right to enter into a contract or agreement, or (c) a combination of (a) and (b). Dividends (in shares) Number Of Other Equity Instruments Nonvested In Sharebased Payment Arrangement Dividends During The Period Number Of Other Equity Instruments Nonvested In Sharebased Payment Arrangement Dividends During The Period Non-current liabilities derivatives Non Current Liabilities Derivatives [Member] This member stands for non-current liabilities derivatives. Value of shares converted Conversion Of Stock, Value of Shares Converted Conversion Of Stock, Value of Shares Converted Carryforward Period [Domain] Carryforward Period [Domain] Carryforward Period [Domain] Schedule of operating activities and investing activities Disclosure of Detailed Information About Operating Activities and Investing Activities [Text Block] The disclosure of detailed information about operating activities and investing activities for a statement of cash flows. Cash used in investing activities Cash flows from (used in) investing activities Tax rate effect of withholding and other taxes (as a percent) Tax Rate Effect Of Withholding And Other Taxes Tax Rate Effect Of Withholding And Other Taxes Intangible assets, net Intangible assets other than goodwill Entity's total for business combinations Entity's total for business combinations [member] Statement of comprehensive income [abstract] Statement of comprehensive income [abstract] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Vested (in dollars per share) Weighted Average Exercise Price Of Options Vested In Share-Based Payment Arrangement The weighted average exercise price of share options vested in a share-based payment arrangement. Acquisition, integration and other Acquisition, Integration, and Other Acquisition, Integration, and Other Diluted (in shares) Diluted total weighted average number of common shares outstanding (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share