Trade receivables and unbilled revenues Accounts and Other Receivables, Net, Current Operating leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] 4 years Maintenance Obligation Due In Fourth Year Minimum amount of maintenance arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Net change in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Interest rate contract - long term debt - Pay Fixed Rate Interest Rate Contract For Long Term Borrowings, Pay Fixed Rate [Member] Interest Rate Contract For Long Term Borrowings, Pay Fixed Rate [Member] Gas distribution costs Gas Distribution Costs Gas Distribution Costs Schedule of Lessee, Operating Lease Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Ownership interest acquired (as percent) Business Acquisition, Percentage of Voting Interests Acquired Unrealized gain on hedged item Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Trading Symbol Trading Symbol Derivative assets, amounts available for offset Derivative Asset, Total Amounts Available For Offset This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to derivative asset. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. Ownership interest (as percent) Equity Method Investment, Ownership Percentage Pension and OPEB Adjustment Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Public Service Company of North Carolina, Incorporated Public Service Company of North Carolina, Incorporated (PSNC) Acquisition [Member] Public Service Company of North Carolina, Incorporated (PSNC) Acquisition Non-NEOs Non-NEOs [Member] Regulatory Liabilities [Line Items] Regulatory Liability [Line Items] Distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders 3.95% Senior Notes 3.95% medium-term notes [Member] 3.95% Senior Notes Disposal Group Name [Domain] Disposal Group Name [Domain] Line of Credit Facility [Table] Line of Credit Facility [Table] 2029 Lessor, Operating Lease, Payment to be Received, Year Five Regulation Accounting for Regulated Operations [Policy Text Block] Discussion about the scope criteria and appropriateness of and extent of the application of generally accepted accounting principles related to accounting for the effects of regulation. Other forms of the disclosure may include: descriptions of the form and economic effects of regulation (for example, but not limited to, recording of regulatory assets and liabilities to the rate setting process); statement about periodic assessments of generally accepted accounting principles related to accounting for the effects of certain types regulation; AFUDC. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Other comprehensive (income)/loss reclassified to earnings Other Comprehensive Income (Loss), before Tax Net investment hedges Net Investment Hedging [Member] Investment, Name [Domain] Investment, Name [Domain] Crude Crude Oil [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Interest payable Increase (Decrease) in Interest Payable, Net Alternatives Defined Benefit Plan, Alternatives [Member] Defined Benefit Plan, Alternatives Less than 1 year Land Leases Future Minimum Payments Due Current Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Incremental expense of capitalized overheads Public Utilities, Approved Rate Increase (Decrease), Amount 4 years Land Leases Future Minimum Payments Due In Four Years Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Pembina Pipeline Corporation Pembina Pipeline Corporation [Member] Pembina Pipeline Corporation Leases [Abstract] Leases [Abstract] Cost  Finite-Lived Intangible Assets, Gross Total regulatory asset Total regulatory assets Regulatory Asset VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Increase/(decrease) resulting from: Income Tax Reconciliation, Reconciling Items Period Increase (Decrease) [Abstract] Corporate Corporate Bond Securities [Member] Business Segments Operating Segments [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities MPLX MPLX [Member] MPLX Schedule of Changes in AOCI Attributable to Enbridge Common Shareholders Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] 2026 Derivative Notional Amount Outstanding Maturing in Year Two Aggregate notional amount outstanding, specified by the derivative(s), maturing in the second fiscal year following the balance sheet date. 2 years Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due In Second Year Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Other adjustments Business Combination, Consideration Transferred, Other Variable lease income Operating Lease, Variable Lease Income Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Finance leases (in years) Finance Lease, Weighted Average Remaining Lease Term Proceeds from dispositions of equity investments Proceeds from Divestiture of Businesses Payables and Accruals [Abstract] Payables and Accruals [Abstract] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Company Selected Measure Amount Company Selected Measure Amount Tabular List, Table Tabular List [Table Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets Anti-dilutive stock options excluded from diluted earnings per common share calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount NONCONTROLLING INTERESTS Noncontrolling Interest Including Limited Partnerships and Variable Interest Entities Disclosure [Text Block] The entire disclosure for noncontrolling interest in consolidated subsidiaries including limited partnerships and variable interest entities, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock. Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Thereafter notional quantity (bcf / mmbbls) Derivative, Nonmonetary Notional Amount Maturing After 5 Years Derivative, Nonmonetary Notional Amount Maturing After 5 Years Included in regulatory assets/liabilities Fair Value, Net Derivative Asset (Liability) Measurement With Unobservable Inputs Reconciliation Recurring Realized And Unrealized Gains Losses Included In Regulatory Assets Fair Value, Net Derivative Asset (Liability) Measurement With Unobservable Inputs Reconciliation Recurring Realized And Unrealized Gains Losses Included In Regulatory Assets Fair value adjustment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-Term Debt Fair Value Adjustment, Rate-Regulated Entities Fair value adjustment to determine amount of long-term debt acquired at the acquisition date, related to rate-regulated entities, with a regulatory offset in noncurrent assets. Schedule of Operating Lease, Lease Income Operating Lease, Lease Income [Table Text Block] 2027 Derivative Notional Amount Outstanding Maturing in Year Three Aggregate notional amount outstanding, specified by the derivative(s), maturing in the third fiscal year following the balance sheet date. Impairment Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Credit Facility [Domain] Credit Facility [Domain] Preference Shares, Series Q Preference Shares, Series Q [Member] Preference Shares, Series Q Goodwill (Note 15) Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Gulfstream Natural Gas System, L.L.C. Gulfstream Natural Gas System LLC [Member] Gulfstream Natural Gas System LLC [Member] Non-Revolving Term Loan Facility Non-Revolving Term Loan Facility [Member] Non-Revolving Term Loan Facility Purchase of noncontrolling interests Noncontrolling Interest, Increase from Business Combination Fixed income securities Fixed Income Securities [Member] Depreciation expense Depreciation Other Proceeds from (Payments for) Other Financing Activities Finance leases (as percent) Finance Lease, Weighted Average Discount Rate, Percent Initial Period Debt Instrument, Interest Rate Terms, Period One [Member] Debt Instrument, Interest Rate Terms, Period One 2025 Finance Lease, Liability, to be Paid, Year One Net deferred income tax liabilities, net Deferred Tax Liabilities, Net Foreign exchange and other Goodwill, Foreign Currency Translation Gain (Loss) Government Domestic Government Bonds [Member] Bonds issued by a national, local, or municipal government within the country of domicile of the entity. Dividends paid per common share (in Canadian dollars per share) Common Stock, Dividends, Per Share, Cash Paid Options vested at end of year (in Canadian dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price 2.15% Senior Notes 2.15% Senior Notes [Member] 2.15% Senior Notes Amortized on a straight-line basis over an expected useful life (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Derivative assets, total net derivative instruments Derivative Asset, Net of Amounts Available for Offset Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, net of amounts that are available for offset but as a policy have been elected not to be offset. Purchase gas variance Purchased Gas Variance [Member] Represents information pertaining to the purchased gas variance. Expiration Date Trading Arrangement Expiration Date Gas Transmission Gas Transmission Gas Transmission Segment [Member] Gas Transmission Segment Operating lease liabilities - current Operating Lease, Liability, Current Revenue not from contract with customers Revenue Not from Contract with Customer Total Shareholder Return Amount Total Shareholder Return Amount Finance leases Lessee, Finance Lease, Description [Abstract] INCOME TAX RATE RECONCILIATION Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Conversion of stock, shares issued (shares) Conversion of Stock, Shares Issued Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Other ( in shares) Adjustments To Additional Paid In Capital, Stock Issued During Period Other Shares Adjustments To Additional Paid In Capital, Stock Issued During Period Other Shares Shares issued on exercise of stock options (in shares) Options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt Amortization/curtailment of prior service credit Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Total accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Thereafter Derivative Notional Amount Outstanding Maturing in after Year Five Aggregate notional amount outstanding, specified by the derivative(s), maturing after the fifth fiscal year following the balance sheet date. Basis Of Presentation Basis of Accounting, Policy [Policy Text Block] Project agreement Project Agreements [Member] Project Agreements [Member] Changes in AOCI AOCI Attributable to Parent, Net of Tax [Roll Forward] Less than 1 year Purchase Obligation, to be Paid, Year One Total deferred income tax assets Deferred Tax Assets, Gross Cans and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Other Other Assets Net, Current Other Assets Net, Current Derivative assets (Note 23) Current derivative assets Derivative Asset, Current Concentration Risk Type [Domain] Concentration Risk Type [Domain] Assets Held-in-trust [Abstract] Asset, Held-in-Trust [Abstract] Schedule of Reconciliation of Movements in The Company's ARO Schedule of Change in Asset Retirement Obligation [Table Text Block] Payments to acquire oil and gas property and equipment Payments to Acquire Oil and Gas Property and Equipment GUARANTEES Guarantees [Text Block] Sale of Stock [Domain] Sale of Stock [Domain] Schedule of Derivative Assets and Liabilities Measured at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Preference Shares, Series G Series G Preferred Stock [Member] All Executive Categories All Executive Categories [Member] Floating rate notes Floating Rate Note [Member] Floating Rate Note [Member] Equity funds Equity Securities [Member] Assets Assets Assets [Abstract] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Bakken Pipeline System Bakken Pipeline System [Member] Other comprehensive income/(loss), net of tax Other Comprehensive Income (Loss), Net of Tax Reclassification to earnings of pension and other postretirement benefits (OPEB) amounts Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Document Type Document Type Derivative Contract [Domain] Derivative Contract [Domain] Weighted Average Amortization Rate Finite Lived Intangible Assets Weighted Average Amortization Rate Represents the weighted average amortization rate for intangible assets of the entity. Actuarial (gain)/loss Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) DCP LLC DCP LLC [Member] DCP LLC Earnings generated by acquiree Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Debt securities, available-for-sale, amortized cost Debt Securities, Available-for-Sale, Amortized Cost Maintenance agreements Maintenance Obligation Due Abstract n/a Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Fair value per option (in Canadian dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Intangible assets, net (Note 14) Intangible assets, net Net Finite-Lived Intangible Assets, Net Investment Type [Axis] Investment Type [Axis] Demand-side management costs Demand-Side Management Costs [Member] Demand-Side Management Costs Renewable Power Generation Renewable Power Generation [Member] Renewable Power Generation Dividends received from equity investments Equity Method Investment Dividends This item represents disclosure of the amount of dividends received from unconsolidated subsidiaries, certain corporate joint ventures, and certain non-controlled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Restricted long-term investments and cash (Note 23) Restricted Investments, at Fair Value Schedule of Weighted Average Assumptions Used to Determine the Fair Value of Stock Options Granted Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] 5.73% senior notes due December 2034 5.73% senior notes due December 2034 [Member] 5.73% senior notes due December 2034 Expected credit loss Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Accumulated Expected Credit Loss On Receivables Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Accumulated Expected Credit Loss On Receivables Schedule of Long-Term Debt Repayments Schedule Of Repayment Of Debt [Table Text Block] Schedule of Repayment of Debt [Table Text Block] Statistical Measurement [Axis] Statistical Measurement [Axis] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Earnings before income taxes Earnings before income taxes Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Investment and production tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Lessor, operating lease, remaining lease term Lessor, Operating Lease, Remaining Lease Term Lessor, Operating Lease, Remaining Lease Term Unrealized foreign exchange gain (loss) on translation of United States dollar denominated debt Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Investment, Name [Axis] Investment, Name [Axis] Current liabilities long term debt Asset Acquisition, Lease Liability, Current Asset Acquisition, Lease Liability, Current Enbridge Pipelines (Southern Lights) L.L.C. Enbridge Pipelines (Southern Lights) LLC [Member] Enbridge Pipelines (Southern Lights) LLC [Member] Revenue Recognition/Natural Gas Imbalances Revenue from Contract with Customer [Policy Text Block] Total current income taxes Current Income Tax Expense (Benefit) Cash Flow Hedges Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Deferred income tax liabilities Deferred Tax Liabilities, Gross [Abstract] Share repurchases in excess of stated value Stock Issued During Period, Value, Shares Repurchased In Excess Of Stated Value Stock Issued During Period, Value, Shares Repurchased In Excess Of Stated Value Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Other Deferred Tax Liabilities, Other Earnings Earnings Earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Gain (loss) on disposal of interest Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Other income/(expense) Other Income Expense [Member] Represents information pertaining to other income or expense. Enbridge Pipelines Inc. Enbridge Pipelines Inc [Member] Represents Enbridge Pipelines, Inc. Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Other current and long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Total notional principal Derivative Notional Amount Outstanding Derivative Notional Amount Outstanding Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Finance lease, liability, noncurrent, statement of financial position [Extensible List] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Gas gathering and processing revenue Gas Gathering and Processing Revenue [Member] Gas Gathering and Processing Revenue [Member] Increase (decrease) in contract with customers, liability Increase (Decrease) In Contract With Customers, Liability Increase (Decrease) In Contract With Customers, Liability Components of accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss) [Line Items] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Fox Squirrel Solar LLC Fox Squirrel Solar LLC [Member] Fox Squirrel Solar LLC Legal Entity [Axis] Legal Entity [Axis] Preference Shares, Series 10 Preference Shares, Series 10 [Member] Preference Shares, Series 10 Dispositions Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Regulatory Asset [Axis] Regulatory Asset [Axis] Dividend rate -spread on variable rate (percent) Preferred Stock, Dividend Rate, Spread On Variable Rate, Percentage Preferred Stock, Dividend Rate, Spread On Variable Rate, Percentage Offshore - various joint ventures Offshore Joint Ventures [Member] Represents the Offshore, which comprise various joint ventures of the entity. The investments in these joint ventures are recorded at equity method investment. Remaining performance obligation, period (in years) Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Maritimes & Northeast Pipeline, L.L.C. Maritimes and Northeast Pipeline [Member] Maritimes and Northeast Pipeline [Member] Weighted average assumptions used to determine the fair value of options Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions and Methodology [Abstract] Net defined pension and OPEB credit Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Pension and Other Postretirement Benefit Disclosures MEDICAL COST TRENDS (as percent) Defined Benefit Plan Disclosure [Line Items] 2029 notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing in Year Five Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the fifth fiscal year following the balance sheet date. Liabilities and equity Liabilities and Equity [Abstract] Less than 1 year Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due In Next Twelve Months Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. 4.21% medium-term notes due February 2030 4.21% medium-term notes due February 2030 [Member] 4.21% medium-term notes due February 2030 Equity investments at carrying value Alternative Investment Long-term debt Regulatory Assets (Liabilities), Long Term Debt [Member] Regulatory Assets (Liabilities), Long Term Debt [Member] Restatement Determination Date Restatement Determination Date Cash balance interest credit rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate Options outstanding at beginning of year (in Canadian dollars per share) Options outstanding at end of year (in Canadian dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Thereafter Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due After Fifth Year Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Options outstanding at beginning of year (in shares) Options outstanding at end of year (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Other long-term liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Enbridge Energy Partners, L.P. Enbridge Energy Partners LP [Member] Amortization/curtailment of prior service credit Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment 2028 Derivative Notional Amount Outstanding Maturing in Year Four Aggregate notional amount outstanding, specified by the derivative(s), maturing in the fourth fiscal year following the balance sheet date. Other regulatory assets (liabilities) Other Regulatory Assets (Liabilities) [Member] Preference share dividends Dividends, Preferred Stock 5 years Land Leases Future Minimum Payments Due In Five Years Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Tax impact Other Comprehensive Income (Loss), Tax UNRECOGNIZED TAX BENEFITS Unrecognized Tax Benefits [Roll Forward] Capital Unit, Class [Domain] Capital Unit, Class [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Weighted Average Remaining Contractual Life (years) Share Based Compensation Arrangement by Share based Payment Award Options Outstanding Weighted Average Remaining Contractual Term [Abstract] Schedule of Commitments Other Commitments [Table Text Block] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Entity Public Float Entity Public Float Disposal Group Name [Axis] Disposal Group Name [Axis] 2028 Lessor, Operating Lease, Payment to be Received, Year Four Income from equity investments (Note 13) Income from equity investments Income (Loss) from Equity Method Investments Net change in affiliate loan Proceeds from non-recourse debt Proceeds from Related Party Debt Projected benefit obligation at beginning of year Projected benefit obligation at end of year Defined Benefit Plan, Benefit Obligation Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Local Phone Number Local Phone Number Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Delaware Basin Residue, LLC Delaware Basin Residue, LLC [Member] Delaware Basin Residue, LLC Equity Method Investment [Table] Equity Method Investment [Table] Asset Acquisition [Line Items] Asset Acquisition [Line Items] OTHER CURRENT ASSETS Other Current Assets [Text Block] Canadian Mainline Canadian Mainline [Member] Represents the Canadian Mainline which includes Canadian portion of the mainline system. The primary business activities of the Canadian Mainline are subject to regulation by the NEB. Stock options, additional disclosures Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Debt Instrument, Interest Rate Terms [Axis] Debt Instrument, Interest Rate Terms [Axis] Debt Instrument, Interest Rate Terms Investments Deferred Tax Liabilities, Investments PEO Total Compensation Amount PEO Total Compensation Amount Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Interest payable Interest Payable, Current Debt Disclosure [Abstract] Debt Disclosure [Abstract] Delayed-Draw Term Loan Facility Maturing In March 2049 Delayed-Draw Term Loan Facility Maturing In March 2049 [Member] Delayed-Draw Term Loan Facility Maturing In March 2049 2025 notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing in Next Twelve Months Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the next fiscal year following the balance sheet date. Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Annual revenue Public Utilities, Annual Revenue Requirement Increase Public Utilities, Annual Revenue Requirement Increase Weighted average depreciation rate (as percent) Property, Plant and Equipment Weighted Average Depreciation Rate Represents the weighted average depreciation rate on property, plant and equipment. Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII) Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII) [Member] Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII) [Member] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Entity Central Index Key Entity Central Index Key Net change in affiliate loans Proceeds from Collection of (Payments to Fund) Long-Term Loans to Related Parties Accrued interest and penalties related to unrecognized tax benefits Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Balance sheet information Equity Method Investment, Summarized Financial Information Balance Sheet [Abstract] No definition available. Trade payables and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Financial Instrument [Axis] Financial Instrument [Axis] CHANGES IN ACCOUNTING POLICIES Accounting Standards Update and Change in Accounting Principle [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Future abandonment costs Environmental Exit Costs, Anticipated Cost Other long-term investments Other Long-Term Investments Unrecognized tax benefits at beginning of year Unrecognized tax benefits at end of year Unrecognized Tax Benefits Comprehensive (income)/loss attributable to noncontrolling interests Comprehensive income/(loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Position [Domain] Position [Domain] City Area Code City Area Code Current liabilities Current liabilities Liabilities, Current [Abstract] Auditor Location Auditor Location Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Schedule of Amounts Recognized in AOCI Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Equity contracts Equity Contract [Member] Deferred Amounts and Other Assets Deferred Amounts and Other Assets [Policy Text Block] Disclosure of accounting policy relating to deferred amounts and other assets. Accounts payable to affiliates Increase (Decrease) in Due to Related Parties, Current Available Line of Credit Facility, Remaining Borrowing Capacity Pension and Other Post Retirement Benefits Pension and Other Postretirement Plans, Policy [Policy Text Block] Regulatory agreement term Regulatory Agreement Term Regulatory Agreement Term Debentures and term notes Debentures And Term Notes [Member] Represents the debentures and term loans issued by the entity to raise funds. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other comprehensive income/(loss) attributable to common shareholders, net of tax Other Comprehensive Income (Loss) Net of Tax Portion Attributable to Common Shareholders Net of tax amount of other comprehensive income (loss) attributable to the common shareholders. Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Preference Shares, Series O Preference Shares, Series O [Member] Preference Shares, Series O Debentures Debentures [Member] A contractual arrangement to borrow and repay an amount under debentures at a specified interest rate. Earnings per common share Earnings Per Share [Abstract] Equity [Abstract] Equity [Abstract] Deficit Retained Earnings (Accumulated Deficit) Commodity Options Options Forward Commodity Contract [Member] Options Forward Commodity Contract Other Storage [Member] Storage [Member] Class of Stock [Domain] Class of Stock [Domain] Options cancelled or expired (in Canadian dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Inventory Increase (Decrease) in Inventories Number Of Non-Interest Promissory Notes Number Of Non-Interest Promissory Notes Number Of Non-Interest Promissory Notes 2 years Long-Term Debt, Maturity, Year Two Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Purchases and settlements, net Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement Underlying Securities Award Underlying Securities Amount Performance Stock Units (PSUs) Performance Shares [Member] Total current regulatory assets (Note9) Regulatory assets (Note 7) Regulatory Asset, Current Net periodic benefit cost Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Amendment Flag Amendment Flag Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Long-Lived Assets Held-for-sale [Line Items] Long-Lived Assets Held-for-Sale [Line Items] Steckman Ridge, LP Steckman Ridge LP [Member] Steckman Ridge LP [Member] Maritimes & Northeast Pipeline Limited Partnership Maritimes & Northeast Pipeline Limited Partnership [Member] Maritimes & Northeast Pipeline Limited Partnership Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Principal amount Debt Instrument, Face Amount Units matured Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Units Matured, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Units Matured, Weighted Average Grant Date Fair Value Entity Address, Postal Zip Code Entity Address, Postal Zip Code 5 years Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due In Fifth Year Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Commodity costs Commodity Costs Commodity Costs Notes Payable, Other Payables Notes Payable, Other Payables [Member] Level 3 net derivative liability at beginning of year Level 3 net derivative liability at end of year Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Restricted long-term investments and cash (Note 23) Restricted long-term investments and cash Restricted Cash and Investments, Noncurrent Commodity costs Commodity Costs [Member] Primary financial statement caption in which reported facts about commodity costs have been included. Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value LEASES Lessor, Operating Leases [Text Block] Gas Transmission Gas Pipelines And Processing [Member] Gas Pipelines and Processing consists of investments in natural gas pipelines and gathering and processing facilities. Investments in natural gas pipelines include the Company's interests in the Alliance Pipeline, the Vector Pipeline (Vector) and transmission and gathering pipelines in the Gulf of Mexico. Investments in natural gas processing include the Company's interest in Aux Sable, a natural gas extraction and fractionation business located near the terminus of the Alliance Pipeline, Canadian Midstream assets located in northeast British Columbia and northwest Alberta and United States Midstream assets located primarily in Texas and Oklahoma. Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] 2027 notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Maturing In Year Three Derivative Nonmonetary Notional Amount Outstanding Maturing In Year Three Wind turbines, solar panels and other Processing and Treating Plants [Member] Other current liabilities Other Current Liabilities [Member] Public Utilities General Disclosures [Table] Public Utilities General Disclosures [Table] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Trade receivables and unbilled revenues Trade Receivables And Unbilled Revenue Trade Receivables And Unbilled Revenue Property, plant and equipment, net (Note 11) Property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Earnings attributable to common shareholders Earnings attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Market approach valuation technique Valuation, Market Approach [Member] Foreign currency exchange rate changes Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) Stock, Class of Stock [Table] Stock, Class of Stock [Table] Noncontrolling Interests Noncontrolling Interests [Policy Text Block] Disclosure of accounting policy for noncontrolling interests. Total assets Assets Commodity costs and Gas distribution costs Operating expenses Cost of Goods and Services Sold Enbridge Gas Ohio Enbridge Gas Ohio [Member] Enbridge Gas Ohio Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and contingencies (Note 30) Commitments and Contingencies Reclassification to earnings of loss on equity investees Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax 5.63% Senior Notes Due April 2034 5.63% Senior Notes Due April 2034 [Member] 5.63% Senior Notes Due April 2034 Schedule of Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] BUSINESS OVERVIEW Nature of Operations [Text Block] Interest rate contract for short term debt receive fixed rate InterestRateContractForShortTermDebtReceiveFixedRate [Member] InterestRateContractForShortTermDebtReceiveFixedRate 4 years Purchase Obligation, to be Paid, Year Four Non-Qualifying Derivative Instruments Not Designated as Hedging Instrument [Member] Debt Instrument [Axis] Debt Instrument [Axis] Preference share dividends Preferred Stock Dividends and Other Adjustments Other Other Operating Income (Expense), Net Trading Arrangement: Trading Arrangement [Axis] Gas Distribution Gas Distribution [Member] Southeast Supply Header, LLC Southeat Supply Header LLC [Member] Southeat Supply Header LLC [Member] 2030-2034 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Amortization of fair value adjustment Amortization of Debt Discount (Premium) Seaway Crude Holdings LLC Seaway Pipeline [Member] Represents Seaway Pipeline investment. Schedule of Allocation of Plan Assets Schedule of Allocation of Plan Assets [Table Text Block] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Entity File Number Entity File Number Thereafter Purchase Obligation, to be Paid, after Year Five Current portion of long-term debt Business Combination, Consideration Transferred, Liabilities Incurred, Current Portion Business Combination, Consideration Transferred, Liabilities Incurred, Current Portion Fair value of plan assets Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets Consolidated Entities [Domain] Consolidated Entities [Domain] Noncontrolling interests (Note 19) Noncontrolling Interest [Member] Entity Address, Address Line One Entity Address, Address Line One Extinguishment of debt Extinguishment of Debt, Amount Common share dividends declared Dividends, Common Stock Shares issued on vesting of RSU, net of tax (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Vesting Stock Issued During Period, Shares, Restricted Stock Award, Vesting 5 years Purchase Obligation, to be Paid, Year Five Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Gross decreases for tax positions of prior year Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Contract Assets Contract with Customer, Asset, after Allowance for Credit Loss Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Share-Based Payment Arrangement, Performance Shares, Activity Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] 5.30% Senior Notes Due April 2029 5.30% Senior Notes Due April 2029 [Member] 5.30% Senior Notes Due April 2029 Public Utility [Axis] Public Utility [Axis] Fair Value of Other Financial Instruments Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Adjustment to Compensation: Adjustment to Compensation [Axis] US minimum tax Effective Income Tax Rate Reconciliation, Base Erosion And Anti-Abuse Tax, Amount Effective Income Tax Rate Reconciliation, Base Erosion And Anti-Abuse Tax, Amount Maximum exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Foreign exchange contracts - United States dollar or GBP or Japanese yen forwards - purchase Foreign Exchange Forward Purchase Contract [Member] Represents the contracts negotiated between two parties to purchase foreign currency at a price specified at origination of the contract, with delivery and settlement at a specified future date. Interest rate contracts - short-term borrowings Interest Rate Contract For Short Term Borrowings, Pay Fixed Rate [Member] Interest Rate Contract For Short Term Borrowings, Pay Fixed Rate 3.51% senior notes 3.51% senior notes [Member] 3.51% senior notes Balance at beginning of year Balance at end of year Equity Equity, Including Portion Attributable to Noncontrolling Interest Allocation of plan assets (as a percent) Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Preference Shares, Series 4 Series4 Preferred Stock [Member] Series4 Preferred Stock Equity Securities, Global Defined Benefit Plan, Equity Securities, Global [Member] Defined Benefit Plan, Equity Securities, Global [Member] Change in translation of foreign currency Unrecognized Tax Benefits, Increase (Decrease) Resulting from Foreign Currency Translation Amount of increase (decrease) in unrecognized tax benefits resulting from foreign currency translation. Entity Filer Category Entity Filer Category Enbridge Athabasca Midstream Investor Limited Partnership Enbridge Athabasca Midstream Investor Limited Partnership [Member] Enbridge Athabasca Midstream Investor Limited Partnership Five-Year Credit Facilities Five-Year Credit Facilities [Member] Five-Year Credit Facilities Statistical Measurement [Domain] Statistical Measurement [Domain] Capital expenditures Segment, Expenditure, Addition to Long-Lived Assets TOTAL DERIVATIVE INSTRUMENTS Derivatives, Fair Value [Line Items] Debt Securities Debt Securities [Member] Stock units, additional disclosures Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] 3 years Maintenance Obligation Due In Third Year Minimum amount of maintenance arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Domestic Deferred Federal, State and Local, Tax Expense (Benefit) Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Enbridge Southern Lights LP Enbridge Southern Lights LP [Member] Enbridge Southern Lights LP [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Long-Term Debt Long-Term Debt [Member] Purchase gas variance Regulatory Assets (Liabilities), Purchase Gas Variance [Member] Regulatory Assets (Liabilities), Purchase Gas Variance Cash paid for income taxes Income Taxes Paid, Net Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount CHANGES IN OPERATING ASSETS AND LIABILITIES Increase (Decrease) in Operating Assets and Liabilities Disclosure [Text Block] The entire disclosure for changes in operating assets and liabilities cash flow activities. Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Supplemental Employee Retirement Plan Supplemental Employee Retirement Plan [Member] Earnings before interest, income taxes and depreciation and amortization Income Loss From Continuing Operations Before Interest Income Taxes Extraordinary Items Noncontrolling Interest This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before interest, income taxes, extraordinary items, and noncontrolling interest. Schedule of the Consolidated Statements of Financial Position Location And Carrying Value of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Loans and Receivables Loans and Receivables [Policy Text Block] Disclosure of accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) when impairments, charge-offs or recoveries are recognized for such receivables (3) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (4) the treatment of any premiums or discounts or unearned income (5) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (6) the treatment of foreclosures or repossessions (7) the nature and amount of any guarantees to repurchase receivables. 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Three GOODWILL Goodwill [Line Items] LEASES Lessee, Operating Leases [Text Block] Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid 3 years Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due In Third Year Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Entity Tax Identification Number Entity Tax Identification Number Schedule of Long-term Debt Issuances Schedule of Long-Term Debt Instruments [Table Text Block] Reconciliation of movements in the Company's ARO Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Foreign Deferred Foreign Income Tax Expense (Benefit) Total AOCI Including Portion Attributable to Noncontrolling Interest [Member] Rate to which the cost trend is assumed to decline (ultimate trend rate) Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Rate of salary increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Illinois Extension Pipeline Company, L.L.C. Illinois Extension Pipeline Company L L C Not Primary Beneficiary [Member] Represents Illinois Extension Pipeline Company L.L.C. Other Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change Weighted Average Remaining Contractual Life (years) Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options Outstanding Weighted Average Remaining Contractual Terms [Abstract] Sale of stock, consideration received on transaction Sale of Stock, Consideration Received on Transaction 2.10% Senior Notes 2.10% Senior Notes [Member] 2.10% Senior Notes Other long-term liabilities Asset Retirement Obligations, Noncurrent Thereafter Finance Lease, Liability, to be Paid, after Year Five Regulatory assets Deferred Tax Liabilities, Regulatory Assets and Liabilities 364-Day Extendible Credit Facility 364-Day Extendible Credit Facility [Member] 364-Day Extendible Credit Facility Whistler Parent JV Whistler Parent JV [Member] Whistler Parent JV Equity Components [Axis] Equity Components [Axis] Total undiscounted lease payments Finance Lease, Liability, to be Paid Excluded components of fair value hedges Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax Earnings attributable to common shareholders Business Acquisition, Pro Forma Net Income (Loss) Period Three Debt Instrument Interest Rate Terms Period Three [Member] Debt Instrument Interest Rate Terms Period Three Other current and non-current assets Increase Decrease In Deferred Charges And Other Noncurrent Assets The increase (decrease) during the reporting period in the value of amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings after one year or the normal operating cycle along with the amount of increase (decrease) in noncurrent assets classified as other. Total operating expenses Costs and Expenses Net actuarial (gain)/loss Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Options outstanding at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Transfer in Defined Benefit Plan, Benefit Obligation, Increase (Decrease) For Obligations Transferred To (From) Plan Defined Benefit Plan, Benefit Obligation, Increase (Decrease) For Obligations Transferred To (From) Plan Goodwill expected tax deductible period (in years) Business Acquisition, Goodwill, Expected Tax Deductible Period Business Acquisition, Goodwill, Expected Tax Deductible Period Share repurchases at stated value Treasury Stock, Value, Acquired, Par Value Method 2029 notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Maturing in Year Five Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the fifth fiscal year following the balance sheet date. Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating lease, expense Operating Lease, Expense European financial institutions European Financial Institutions [Member] Represents the European financial institutions which are counterparties to derivative agreements with the entity. Fixed-to-floating non-call notes Fixed-To-Floating Non-Call Notes [Member] Fixed-To-Floating Non-Call Notes Weighted average interest rate (as percent) Debt, Weighted Average Interest Rate Eolien Maritime France Sas Eolien Maritime France Sas [Member] Represents Eolien Maritime France SAS investment. Foreign Current Foreign Tax Expense (Benefit) Current assets Current assets Assets, Current [Abstract] Interest expense on debt Interest Costs Incurred Consolidation Items [Axis] Consolidation Items [Axis] Effects of rate-regulated accounting Income Tax Reconciliation Effects of Rate Regulated Accounting Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to effects of rate regulated accounting. Natural gas Natural Gas [Member] Unrealized loss on derivative Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Class B units Capital Unit, Class B [Member] Amortized on a straight-line basis over an weighted-average useful life (in years) Acquired Finite-Lived Intangible Asset, Weighted-Average Period before Renewal or Extension CHANGES IN OPERATING ASSETS AND LIABILITIES CHANGES IN OPERATING ASSETS AND LIABILITIES Product and Service [Domain] Product and Service [Domain] Goodwill [Roll Forward] Goodwill [Roll Forward] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized and realized gains Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held Aitken Creek North Gas Storage Facility Aitken Creek North Gas Storage Facility [Member] Aitken Creek North Gas Storage Facility Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Schedule of Revenues by Geographical Segments Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Preference Shares, Series 16 Preference Shares, Series 16 [Member] Preference Shares, Series 16 Schedule of Property, Plant And Equipment By Geographical Segments Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] 2029 Derivative Notional Amount Outstanding Maturing in Year Five Aggregate notional amount outstanding, specified by the derivative(s), maturing in the fifth fiscal year following the balance sheet date. Fair value of net assets acquired: Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract] Number Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Commodity Contracts - Physical Physical Forward Commodity Contract [Member] Represents the physical commodity contract. Goodwill of investee Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Deferred amounts and other assets Deferred Amounts And Other [Member] Represents the deferred amounts and other, a line item in statement of financial position, in which the fair value amounts of the derivative instruments are included. Short-term borrowings (Note 17) Short-term borrowings Short-Term Debt Variable Rate Component [Axis] Variable Rate Component [Axis] Variable Rate Component Authorized ROE (as percent) Public Utilities, Authorized, Return on Equity, Percentage Public Utilities, Authorized, Return on Equity, Percentage Biogas rights agreements Biogas Rights Agreements [Member] Biogas Rights Agreements Credit facility provided Total Facilities Credit facility capacity Line of Credit Facility, Maximum Borrowing Capacity Derivative liabilities, total gross derivative instruments as presented Derivative Liability Thereafter Maintenance Obligation Due After Fifth Year Minimum amount of maintenance arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Preference Shares, Series R Series R Preferred Stock [Member] Outstanding nonredeemable series R preferred stock or outstanding series R preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity if redemption is outside the control of the issuer. Contract Receivables Accounts Receivable, after Allowance for Credit Loss Transfer in Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan Schedule of Changes in Net Fair Value of Derivative Assets and Liabilities Classified as Level 3 in the Fair Value Hierarchy Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Derivative liabilities, amounts available for offset Derivative Liability, Total Amounts Available For Offset This is the amount available for offset which represents what we can offset under current guidance but as a policy have chosen not to offset, related to derivative liability. Offset amounts are determined using criteria such as events of bankruptcy or other significant credit event. Fair value adjustment of regulatory offset Business Combination, Provisional Information, Initial Accounting Incomplete, Fair Value Adjustment, Regulatory Offset Business Combination, Provisional Information, Initial Accounting Incomplete, Fair Value Adjustment, Regulatory Offset Acquisitions Payments to Acquire Businesses, Net of Cash Acquired Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Fair value adjustment of long-term debt Business Combination, Provisional Information, Initial Accounting Incomplete, Fair Value Adjustment, Long-Term Debt Business Combination, Provisional Information, Initial Accounting Incomplete, Fair Value Adjustment, Long-Term Debt Renewable Power Generation Renewable Power Generation Segment [Member] Green Power and Transmission consists of the Company's investments in renewable energy assets and transmission facilities. Renewable energy assets consist of wind, solar, geothermal and waste heat recovery facilities and are located in Canada primarily in the provinces of Alberta, Ontario and Quebec and in the United States primarily in Colorado, Texas and Indiana. Facilities and equipment Pumping Equipment Building Tanks And Other [Member] Represents the pumping equipment, building, tanks and other depreciable assets of the entity. Thereafter notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing In After Year Five Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing after the fifth fiscal year following the balance sheet date. Statement of Financial Position Location, Balance [Axis] Statement of Financial Position Location, Balance [Axis] Interest expense (Note 17) Interest Expense, Nonoperating Leases, Operating [Abstract] Lessee, Operating Lease, Description [Abstract] Deferred income tax expense (Note 24) Total deferred income taxes Deferred Income Tax Expense (Benefit) Amount of (income)/loss reclassified from AOCI to earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Net pension (credit)/cost recognized in Earnings Pension and Other Postretirement Benefits Cost (Reversal of Cost) Schedule of Supplemental Pro Forma Consolidated Financial Information Business Acquisition, Pro Forma Information [Table Text Block] Gain on disposition of equity investments (Note 13) Gain on disposition of equity investment Gain on disposition of equity investments Gain (Loss) on Sale of Interest in Projects US dollar senior notes Term Loan [Member] Term Loan [Member] Geographic Information Revenues from External Customers and Long-Lived Assets [Line Items] Antidilutive securities Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Fair value of plan assets at beginning of year Fair value of plan assets at end of year Defined Benefit Plan, Plan Assets, Amount Southern Lights Pipeline Southern Lights [Member] Represents the United States portion of the Southern Lights pipeline which is regulated by the FERC and the Canadian portion of the pipeline which is regulated by the NEB. Thereafter Long-Term Debt, Maturity, after Year Five Percent of match (percent) Defined Contribution Plan, Employer Matching Contribution, Percent of Match Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Document Annual Report Document Annual Report Non-Interest Bearing Promissory Notes Non-Interest Bearing Promissory Notes [Member] Non-Interest Bearing Promissory Notes Ownership interest acquired additionally (as a percent) Ownership Percentage, Additional Interest Acquired Ownership Percentage, Additional Interest Acquired Weighted average exercise price of antidilutive securities (in Canadian dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price1 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price1 DEBT Long Term and Short Term Debt [Line Items] Amortization expense for intangible assets Amortization of Intangible Assets Contract Liabilities Contract with Customer, Liability Pro forma interest expense Business Combination, Pro-Forma, Interest Expense Business Combination, Pro-Forma, Interest Expense Commitments. Contingencies and Environmental Liabilities Commitments and Contingencies, Policy [Policy Text Block] Preference Shares, Series 12 Preference Shares, Series 12 [Member] Preference Shares, Series 12 Current Fiscal Year End Date Current Fiscal Year End Date Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Preference Shares, Series 9 Series9 Preferred Stock [Member] Outstanding nonredeemable series 9 preferred stock or outstanding series 9 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Transportation and other services Transportation And Other Services Revenues [Member] Transportation And Other Services Revenues Income tax on amounts retained in AOCI Other Comprehensive Income (Loss) before Reclassifications, Tax Other long-term liabilities Liability, Defined Benefit Plan, Noncurrent Total long - term regulatory liabilities Regulatory Liability, Noncurrent Transferred Over Time Transferred over Time [Member] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Debt instrument, callable term Debt Instrument, Callable Term Debt Instrument, Callable Term NEXUS Gas Transmission, LLC Nexus Gas Transmission L L C [Member] Represents Nexus Gas Transmission, LLC. Additional paid-in capital Additional Paid-in Capital [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Share Capital Class of Stock [Line Items] Preference Shares, Series A Series A Preferred Stock [Member] Class of Stock [Axis] Class of Stock [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] 2028 Finance Lease, Liability, to be Paid, Year Four Schedule of Weighted Average Shares Outstanding Used to Calculate Basic and Diluted Earnings Per Share Schedule of Weighted Average Number of Shares [Table Text Block] Unrealized foreign currency gain/(loss) Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Capital Units by Class [Axis] Capital Units by Class [Axis] Non-taxable portion of gain on sale of investment Effective Income Tax Rate Reconciliation, Disposition of Asset, Amount Redemption of preference shares Stock Redeemed or Called During Period, Value Included in earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Preference Shares, Series C Series C Preferred Stock [Member] Schedule of Effect of Cash Flow Hedges and Net Investment Hedges on Consolidated Earnings and Consolidated Comprehensive Income, Before Income Taxes Derivative Instruments, Gain (Loss) [Table Text Block] Other income Nonoperating Income (Expense) Dividend rate (percent) Preferred Stock, Dividend Rate, Percentage Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Operating income Operating income Operating Income (Loss) Valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Total liabilities and equity Liabilities and Equity 5.95% Senior Notes Due April 2054 5.95% Senior Notes Due April 2054 [Member] 5.95% Senior Notes Due April 2054 Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Equity Securities, Global Defined Benefit Plan, Equity Securities, Non-US [Member] Derivative liabilities Current derivative liabilities Derivative Liability, Current Vector Pipeline L.P. Vector Pipeline L P Not Primary Beneficiary [Member] Represents Vector Pipeline L.P. Increase in base rate Public Utilities, Requested Rate Increase (Decrease), Amount Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Domestic Current Federal, State and Local, Tax Expense (Benefit) Expected option term - historical exercise practice (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Historical Exercise Practice Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Historical Exercise Practice Schedule of Long-Lived Assets Held-for-sale [Table] Long-Lived Asset, Held-for-Sale [Table] Schedule of Components of Pretax Earnings and Income Taxes Schedule of Income before Income Tax Domestic and Foreign and Component of Income Tax Expense Benefit [Table Text Block] Tabular disclosure of income before income tax and income tax expense (benefit) between domestic and foreign jurisdictions. Alliance Pipeline Alliance Pipeline Canada And Us [Member] Represents Alliance Pipeline Canada and US investment. Underlying Security Market Price Change Underlying Security Market Price Change, Percent Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Schedule of Regulatory Assets Schedule of Regulatory Assets [Table Text Block] Expected option term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Inventory (Note 10) Total Inventory Inventory Inventory, Net Product and Service [Axis] Product and Service [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Statement [Line Items] Statement [Line Items] Operating expenses Operating Expenses [Abstract] Schedule of Property, Plant And Equipment Property, Plant and Equipment [Table Text Block] Purchase price Business Combination, Consideration Transferred Deferred Consideration Business Combination, Deferred Consideration [Abstract] Business Combination, Deferred Consideration Derivative Instruments and Hedging Derivatives, Policy [Policy Text Block] Current Expected Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Other Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Minimum Minimum Price/Volatility Minimum [Member] Other Defined Benefit Plan Other Changes Plan Assets Represents the changes to fair value of defined benefit plan assets, not otherwise separately disclosed in financial statements. Adoption Date Trading Arrangement Adoption Date Related Party Transactions [Abstract] Related Party Transactions [Abstract] Foreign currency translation adjustment Asset Retirement Obligation, Foreign Currency Translation Gain (Loss) VARIABLE INTEREST ENTITY Variable Interest Entity [Line Items] Fixed-to-fixed subordinated term notes Fixed-to-fixed Term Subordinated Term Notes [Member] Fixed-to-fixed Term Subordinated Term Notes Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Canadian federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Exercise Price Award Exercise Price Carrying value Portion of Carrying Value of Debt Instrument Represents the portion of carrying value of debt instrument. Schedule of Major Components of Deferred Income Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Asset Acquisition [Table] Asset Acquisition [Table] Arrangement Duration Trading Arrangement Duration Benefit of unused tax loss carryforwards recognized Operating Loss Carryforwards Share capital Equity, Attributable to Parent [Abstract] 9.85% debentures 9.85% debentures [Member] 9.85% debentures Deferred tax liabilities, regulatory assets Deferred Tax Liabilities, Regulatory Assets Preference Shares, Series P Series P Preferred Stock [Member] Outstanding nonredeemable series P preferred stock or outstanding series P preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity if redemption is outside the control of the issuer. Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Purchase of services, pipe and other materials, including transportation Purchase Obligation, Fiscal Year Maturity [Abstract] 4.75% Senior Notes 4.75% Senior Notes [Member] 4.75% Senior Notes Maximum credit exposure with respect to derivative instruments Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure Texas Eastern Transmission, LP Texas Eastern Transmission, LP [Member] Texas Eastern Transmission, LP Realized loss on hedged item Gain (Loss) on Hedging Activity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Foreign currency exchange rate changes Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) Other income/(expense) (Note 27) Total Other Nonoperating Income (Expense) OPEB Other Postretirement Benefits Plan [Member] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Dividend (in Canadian dollars per share) Preferred Stock, Dividends Per Share, Declared Foreign subsidiaries' undistributed earnings on which deferred income taxes has not been provided Undistributed Earnings of Foreign Subsidiaries Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Related Party [Domain] Related and Nonrelated Parties [Domain] Power purchase agreements Power Purchase Agreements [Member] Represents power purchase agreements, an intangible asset of the entity. Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Remaining consideration payable, payment period Business Combination, Consideration Payable, Payment Period Business Combination, Consideration Payable, Payment Period Shares issued, net of issue costs Stock Issued During Period, Value, Issued for Services 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year One 2025 Derivative Notional Amount Outstanding Maturing in Next Twelve Months Aggregate notional amount outstanding, specified by the derivative(s), maturing in the next fiscal year following the balance sheet date. Equity Investees AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest [Member] Operating lease, right-of-use asset, statement of financial position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Net sell Short [Member] Rolling time period over which the company forecasts cash requirements (in months) Rolling Time Period for Cash Forecasting Represents the rolling time period over which the entity forecasts cash requirements to determine whether sufficient funds will be available. Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] U.S income Taxes Regulatory Assets (Liabilities), U.S income Taxes [Member] Regulatory Assets (Liabilities), U.S income Taxes Equity Component [Domain] Equity Component [Domain] Amount recognized in balance sheet Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Other Other Not Primary Beneficiary [Member] Represents Other entities. Three- year increase in healthcare costs (percent) Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Assumed, Expected Increase Defined Benefit Plan, Ultimate Health Care Cost Trend Rate, Assumed, Expected Increase Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] The East Ohio Gas Company The East Ohio Gas Company (EOG) [Member] The East Ohio Gas Company (EOG) Entity Shell Company Entity Shell Company Schedule of Supplemental Statements of Financial Position Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Commercial paper and credit facility draws Commercial Paper And Credit Facility Draws [Member] Represents the commercial paper and credit facility through which the entity raised funds. Commercial papers are unsecured promissory notes (generally negotiable) that provide institutions with short-term funds and credit facility provides capital to borrower without the need to structure a loan for each borrowing. Fécamp Fécamp [Member] Fécamp Taxes payable Taxes Payable US financial institutions U S Financial Institutions [Member] Represents the U.S. financial institutions which are counterparties to derivative agreements with the entity. Class A units Capital Unit, Class A [Member] Counterparty Name [Axis] Counterparty Name [Axis] Equity Funds And Debt Securities Equity Funds And Debt Securities [Member] Equity Funds And Debt Securities Consolidation Items [Domain] Consolidation Items [Domain] Cash paid for interest, net of amount capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Total property, plant and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Current assets Current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Senior notes Senior Notes [Member] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Thereafter Lessor, Operating Lease, Payment to be Received, after Year Five Options vested at end of year (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Changes in operating assets and liabilities (Note 28) Changes in operating assets and liabilities Increase (Decrease) in Operating Capital QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly Financial Information [Text Block] Other Revenue Other Revenue [Member] Other Revenue [Member] Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Schedule of Changes in Projected Benefit Obligation, Plan Assets and Funded Status Schedule of Changes in Projected Benefit Obligations [Table Text Block] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Other intangible assets Other Intangible Assets [Member] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest [Abstract] Aitken Creek Gas Storage Aitken Creek Gas Storage Facility And Aitken Creek North Gas Storage Facility [Member] Aitken Creek Gas Storage Facility And Aitken Creek North Gas Storage Facility Domestic plan Domestic Plan [Member] Operating leases (as percent) Operating Lease, Weighted Average Discount Rate, Percent Net cash provided by/(used in) financing activities Net Cash Provided by (Used in) Financing Activities DCP Midstream, LLC DCP Midstream LLC [Member] DCP Midstream LLC [Member] Public utilities, approved, earnings sharing mechanism, additional share of earnings ( as percent) Public Utilities, Approved, Earnings Sharing Mechanism, Additional Share Of Earnings, Percentage Public Utilities, Approved, Earnings Sharing Mechanism, Additional Share Of Earnings, Percentage 3.10% senior notes 3.10% senior notes [Member] 3.10% senior notes Schedule of Changes in Operating Assets and Liabilities Cash Flow, Operating Capital [Table Text Block] Accounting impairment of non-deductible goodwill Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount Transferred at Point in Time Transferred at Point in Time [Member] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Accounts payable to affiliates Accounts payable to affiliates Other Accounts Payable and Accrued Liabilities Renewable energy assets Renewable Energy Assets [Member] Represents renewable energy assets. Amortization/settlement of net actuarial (gain)/loss Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax Fair Value as of Grant Date Award Grant Date Fair Value Customer Concentration Risk Customer Concentration Risk [Member] Deferred amounts and other assets Assets for Plan Benefits, Defined Benefit Plan Schedule of Major Products and Services Disaggregation of Revenue [Table Text Block] Shares issued, net of issue costs Stock Issued During Period, Value, New Issues Fixed-to-floating rate subordinated term notes Fixed To Floating Subordinated Term Notes [Member] Represents the information pertaining to fixed-to-floating rate subordinated term notes. Enbridge Gas Inc. Enbridge Gas Inc. [Member] Enbridge Gas Inc. [Member] 8.20% Debentures 8.20% Debentures [Member] 8.20% Debentures Principles Of Consolidation Consolidation, Policy [Policy Text Block] Asian financial institutions Asian Financial Institutions [Member] Represents the Asian financial institutions which are counterparties to derivative agreements with the entity. Document Financial Statement Error Correction Flag Document Financial Statement Error Correction [Flag] Contributions expected to be paid in next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Obligations at beginning of year Obligations at end of year Asset retirement obligations Asset Retirement Obligation Other comprehensive income/(loss) retained in AOCI Other Comprehensive Income (Loss), before Reclassifications, before Tax Other Deferred Tax Assets, Other Schedule of Common Shares Schedule of Common Stock Outstanding Roll Forward [Table Text Block] 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Provincial and state income taxes Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Operating lease, liability, current, statement of financial position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Power Power [Member] Represents power, a commodity in which the entity trades. Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Enbridge Holdings (Tomorrow RNG), LLC Enbridge Holdings (Tomorrow RNG), LLC [Member] Enbridge Holdings (Tomorrow RNG), LLC Operating lease, payments Operating Lease, Payments Property, plant, and equipment, right-of-use asset Asset Acquisition, Right-Of-Use Asset Asset Acquisition, Right-Of-Use Asset Expiration term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Ownership [Domain] Ownership [Domain] Property, plant and equipment and intangible assets non-cash accruals Capital Expenditures Incurred but Not yet Paid Audit Information [Abstract] Audit Information Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Current liabilities Current liabilities Liabilities, Current Unrecognized compensation cost related to non-vested share-based compensation arrangements granted Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] LONG-TERM INVESTMENTS Equity Method Investments and Joint Ventures Disclosure [Text Block] Public Utilities, General Disclosures [Line Items] Public Utilities, General Disclosures [Line Items] Write-off of regulatory deferrals Effective Income Tax Rate Reconciliation, Write-off of Regulatory Deferrals Effective Income Tax Rate Reconciliation, Write-off of Regulatory Deferrals Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 2026 notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing in Year Two Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the second fiscal year following the balance sheet date. Preference share dividends Payments of Ordinary Dividends, Preferred Stock and Preference Stock Schedule of Group Credit Concentrations and Maximum Credit Exposure, With Respect to Derivative Instruments Fair Value, Concentration of Risk [Table Text Block] Entity Address, City or Town Entity Address, City or Town Liabilities acquired Asset Retirement Obligation, Acquisition Asset Retirement Obligation, Acquisition Questar Gas Company Questar Gas Company [Member] Questar Gas Company Incentive Stock Options Incentive Stock Options [Member] Represents the stock options awarded to employees that vest in equal annual installments and which are not performance-based. Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Crude oil Energy Related Inventory, Crude Oil, Products and Merchandise Committed credit facilities Committed Credit Facility [Member] Represents information pertaining to committed credit facilities. Interest and penalties (recovery) expense related to unrecognized tax benefits Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) Comprehensive Income (Loss) Note [Text Block] Units cancelled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Finance leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Preference Shares, Series B Series B Preferred Stock [Member] Overfunded pension plan assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Overfunded Pension Plan Assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Overfunded Pension Plan Assets 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Five Document Period End Date Document Period End Date Sale of Stock [Axis] Sale of Stock [Axis] Comprehensive income attributable to common shareholders Comprehensive Income Attributable to Common Shareholders Basic This element represents comprehensive income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated during the period). Total undiscounted lease payments Lessee, Operating Lease, Liability, to be Paid Dividend reinvestment (in shares) Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options Dividend Reinvestment Represents the increase in the number of shares under the equity instrument other than options due to dividend reinvestment. Units matured (in shares) Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options Matured The number of equity-based payment instruments, excluding stock (or unit) options, that matured during the period. Insider Trading Arrangements [Line Items] Other current assets Other Current Assets [Member] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Ara Divert HoldCo, Inc. Ara Divert HoldCo, Inc [Member] Ara Divert HoldCo, Inc Realized gain on AOCI Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Document Transition Report Document Transition Report Schedule of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Customer [Domain] Customer [Domain] Ownership interest percentage held by noncontrolling owners Subsidiary, Ownership Percentage, Noncontrolling Owner Asset Acquisition [Domain] Asset Acquisition [Domain] Schedule of Performance Obligations Revenue, Performance Obligations [Table Text Block] Revenue, Performance Obligations [Table Text Block] Preference Shares, Series I Series I Preferred Stock [Member] Series I Preferred Stock Net actuarial (gain)/loss arising during the year Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax Pro forma interest expense, net of tax Business Combination, Pro-Forma, Interest Expense, Net Of Tax Business Combination, Pro-Forma, Interest Expense, Net Of Tax Common stock, shares authorized Common Stock Shares Authorized for Share-Settled Awards Common Stock Shares Authorized for Share-Settled Awards Medium-term notes Medium-Term Note [Member] Total fair value of options vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Letter of Credit Letter of Credit [Member] Company Selected Measure Name Company Selected Measure Name Operating lease income comprehensive income extensible list not disclosed flag Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Adjustments to reconcile earnings to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Debenture and term note repayments Repayments of Long-Term Debt Expected federal taxes at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cover [Abstract] Cover [Abstract] Under development In Process Research and Development [Member] Special ownership interest (percent) Equity Method Investment Ownership Additional Percentage Equity Method Investment Ownership Additional Percentage US Foreign Plan [Member] 5.25% Senior Notes Due April 2027 5.25% Senior Notes Due April 2027 [Member] 5.25% Senior Notes Due April 2027 Fair value hedges Fair Value Hedging [Member] Preference Shares, Series F Series F Preferred Stock [Member] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Long-term debt (Note 17) Long-term debt Long-term debt Long-Term Debt and Lease Obligation Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Interest rate contract for costless collar Interest Rate Contract, Costless Collar [Member] Interest Rate Contract, Costless Collar Position [Axis] Position [Axis] Future removal and restoration reserves Removal Costs [Member] 2026 Lessor, Operating Lease, Payment to be Received, Year Two Policy limit increase (as percent) Floating Rate Debt as Target Percentage of Total Debt Outstanding Represents the floating rate debt as a target percentage of the total debt outstanding. Inventory Inventory, Policy [Policy Text Block] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash received on exercise of awards Proceeds from Stock Options Exercised Preference Shares, Series 14 Preference Shares, Series 14 [Member] Preference Shares, Series 14 Deferred amounts and other assets Deferred amounts and other assets Deferred Costs and Other Assets Aux Sable Liquid Products, L.P. Aux Sable Midstream, LLC and Aux Sable Liquid Products, L.P. [Member] Aux Sable Midstream, LLC and Aux Sable Liquid Products, L.P. Award Timing Disclosures [Line Items] Schedule of Changes in Fair Value of Plan Assets Schedule of Changes in Fair Value of Plan Assets [Table Text Block] Net gain (loss) on derivative Realized gain/(loss) on derivative Derivative, Gain (Loss) on Derivative, Net Operating lease, liability, noncurrent, statement of financial position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] 2 years Purchase Obligation, to be Paid, Year Two Total Maintenance Purchase Obligation Minimum amount of maintenance arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. Public Offering Member Public Offering Member [Member] Public Offering Member Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Sale of stock, price per share (in Canadian dollars per share and US dollars per share) Sale of Stock, Price Per Share US UNITED STATES Revision of Prior Period, Reclassification, Adjustment Revision of Prior Period, Reclassification, Adjustment [Member] Federal carbon program liability Federal Carbon Program Liability Current Federal Carbon Program Liability Current Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Property, plant and equipment, additions Property, Plant and Equipment, Additions Pension plan receivable Pension and Other Postretirement Plans Costs [Member] Preference Shares, Series 19 Preference Shares, Series 19 [Member] Preference Shares, Series 19 [Member] Preference Shares, Series N Series N Preferred Stock [Member] Outstanding nonredeemable series N preferred stock or outstanding series N preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity if redemption is outside the control of the issuer. Project [Domain] Project [Domain] Accretion expense Asset Retirement Obligation, Accretion Expense Other Stockholders' Equity, Other 2028 notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing in Year Four Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the fourth fiscal year following the balance sheet date. Award Timing Method Award Timing Method [Text Block] Net periodic benefit (credit)/cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] 3 years Land Leases Future Minimum Payments Due In Three Years Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. NONCONTROLLING INTERESTS Noncontrolling Interest [Line Items] Saint-Nazaire Saint-Nazaire [Member] Saint-Nazaire Number of pipelines to be sold Number Of Pipelines To Be Sold Number Of Pipelines To Be Sold Insider Trading Policies and Procedures [Line Items] Fair value of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Use of Estimates Use of Estimates, Policy [Policy Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Long-term assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets Compensation Amount Outstanding Recovery Compensation Amount Hohe See Offshore And Albatros Offshore Wind Farm Hohe See Offshore And Albatros Offshore Wind Farm [Member] Hohe See Offshore And Albatros Offshore Wind Farm Disposal Group Classification [Axis] Disposal Group Classification [Axis] Entity Small Business Entity Small Business Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Units cancelled Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Units Cancelled, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Units Cancelled, Weighted Average Grant Date Fair Value Net Investment Hedges Accumulated Net Gain Loss, Net Investment Hedge, Including Noncontolling Interest [Member] [Member] Accumulated Net Gain Loss, Net Investment Hedge, Including Noncontolling Interest [Member] [Member] STOCK-BASED COMPENSATION Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Unrealized derivative fair value (gain)/loss, net (Note 23) Unrealized gain (loss) on derivatives Unrealized Gain (Loss) on Derivatives Canadian Employees Canadian Employees [Member] Represents the employees of the entity who work in Canada. Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] 3.15% medium-term notes 3.15% medium-term notes [Member] 3.15% medium-term notes Schedule of Revenue Allocated to Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Asset Acquisition [Axis] Asset Acquisition [Axis] Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss INVENTORY Inventory Disclosure [Text Block] Total Land Leases Future Minimum Payments Due Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable letter-terms in excess of one year. Per share base redemption value (in Canadian dollars per shares) Preferred Stock, Redemption Price Per Share Term of fixed rate (in years) Debt Instrument, Term Of Fixed Interest Rate Debt Instrument, Term Of Fixed Interest Rate Algonquin Gas Transmission, LLC Algonquin Gas Transmission, LLC [Member] Algonquin Gas Transmission, LLC [Member] Share options Share-Based Payment Arrangement, Option [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Transportation and other services Transportation And Other Services [Member] Represents information pertaining to transportation and other services revenues. Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Comprehensive income attributable to controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Pension Pension Plan [Member] Change in unrealized gain/(loss) on cash flow hedges Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax, Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax, Portion Attributable to Noncontrolling Interest Award Type [Axis] Award Type [Axis] Variable Rate Component [Domain] Variable Rate Component [Domain] Variable Rate Component [Domain] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Thereafter Land Leases Future Minimum Payments Due Thereafter Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Enbridge Gas Ontario Enbridge Gas Ontario [Member] Enbridge Gas Ontario Rio Bravo Rio Bravo [Member] Rio Bravo Property, plant and equipment, net Property, Plant and Equipment, Net ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Liabilities Liabilities Preference Shares, Series 4 Preference Shares, Series 4 [Member] Preference Shares, Series 4 Noncontrolling interests (Note 19) Noncontrolling interests Equity, Attributable to Noncontrolling Interest 2025 notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Maturing in Next Twelve Months Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the next fiscal year following the balance sheet date. Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Foreign Currency Transactions and Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Revolving Credit Facility Revolving Credit Facility [Member] Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Spectra Energy Partners, LP Spectra Energy Partners L P [Member] Represents Spectra Energy Partners, L.P. 4.01% Senior Notes 4.01% Senior Notes [Member] 4.01% Senior Notes Westcoast Energy Inc. Westcoast Energy Inc. [Member] Westcoast Energy Inc. Liabilities incurred Asset Retirement Obligation, Liabilities Incurred Loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Investment company committed capital threshold amount Equity Method Investment, Additional Committed Capital, Amount Equity Method Investment, Additional Committed Capital, Amount Retirement Plan Name [Axis] Retirement Plan Name [Axis] Amount of unrealized gain/(loss) recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Participant contributions Defined Benefit Plan, Plan Assets, Contributions by Plan Participant Debt Instrument [Line Items] Debt Instrument [Line Items] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Schedule of Interest Expense Schedule Of Interest Expense Table Text Block [Table Text Block] Tabular disclosure of interest expenses on borrowed funds, accounted for as interest that was charged against earnings or capitalized during the period and also presented by entity. Actuarial gain/(loss) on pension and OPEB Other Comprehensive Income Defined Benefit Plan Actuarial Gain Loss Arising During Period Net Of Tax Represents the net of tax amount of the actuarial (gains) losses on pension plans and other postretirement benefits arising during the period. Lapses of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Diluted weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Minimum outstanding common shares required to be acquired to exercise the shareholder rights plan (as a percent) Shareholder Rights Plan Minimum Common Shares Required To Be Acquired To Exercise Rights Represents the minimum percentage of outstanding common shares of the entity required to be acquired by a shareholder to exercise the rights under the shareholder rights plan. MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Number of long-term incentive compensation plans Number of Compensation Plans Number of Compensation Plans Storage and other revenue Storage and Other Revenue [Member] Storage and Other Revenue [Member] Total Enbridge Inc. shareholders’ equity Equity, Attributable to Parent Commodity Contracts - Financial Financial Forward Commodity Contract [Member] Represents the financial commodity contract. Schedule of Goodwill Schedule of Goodwill [Table Text Block] Software Software and Software Development Costs [Member] Income statement information Equity Method Investment, Summarized Financial Information [Abstract] Aux Sable Canada LP Aux Sable Canada LP [Member] Aux Sable Canada LP Defined contribution benefit cost Defined Contribution Plan, Cost Negative salvage Regulatory Asset, Negative Salvage [Member] Regulatory Asset, Negative Salvage Utility Plant [Domain] Utility Plant [Domain] Cash and Cash Equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Questar Acquisition Questar Acquisition [Member] Questar Acquisition 4 years Long-Term Debt, Maturity, Year Four Effect of dilutive options and RSUs (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Statement of Financial Position Location, Balance [Domain] Statement of Financial Position Location, Balance [Domain] Commodity sales Commodity Sales [Member] Primary financial statement caption in which reported facts about commodity sales revenue have been included. 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Two Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Options outstanding at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Reduction to property, plant and equipment, net and increase to long-term investments Contribution of Property Expected dividend yield (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Equity Securities, US Defined Benefit Plan, Equity Securities, US [Member] REGULATORY MATTERS Schedule of Regulatory Assets and Liabilities [Text Block] Schedule of Reporting Information by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Derivative liability, statement of financial position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Nonrelated Party Nonrelated Party [Member] 2.98% senior notes 2.98% senior notes [Member] 2.98% senior notes Derivative, average fixed interest rate (as percent) Derivative, Average Fixed Interest Rate Options vested at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Contingent consideration payable Business Combination, Contingent Consideration, Liability, Noncurrent Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Defined Benefit Plan [Table] Defined Benefit Plan [Table] Regulatory Assets [Line Items] Regulatory Asset [Line Items] 4.73% medium-term notes due August 2034 4.73% medium-term notes due August 2034 [Member] 4.73% medium-term notes due August 2034 Enbridge Inc. Parent Company [Member] Maximum Maximum Price/Volatility Maximum [Member] Preferred stock, value, outstanding Preferred Stock, Value, Outstanding Goodwill accumulated impairment Goodwill, Impaired, Accumulated Impairment Loss Vector Pipeline Limited Vector Pipeline [Member] Represents Vector Pipeline investment. Antidilutive Securities [Axis] Antidilutive Securities [Axis] Property, plant and equipment Deferred Tax Liabilities, Property, Plant and Equipment Other comprehensive income/(loss), net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Name Outstanding Recovery, Individual Name Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Impairment of goodwill Impairment of goodwill Goodwill, Impairment Loss LIQUIDITY RISK AND CREDIT RISK Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] Title and Position [Axis] Title and Position [Axis] Number of primary methods of depreciation which are utilized Number of Primary Methods of Depreciation which are Utilized Represents the number of primary methods of depreciation which are utilized. Other comprehensive income/(loss) from equity investees Other Comprehensive Income (Loss) Equity Investees Adjustment Net of Tax Net of tax amount of the appreciation (loss) in the value of unsold equity investees. Excludes amounts related to other than temporary impairment (OTTI) losses. Award Timing Predetermined Award Timing Predetermined [Flag] Common share dividends Payments of Ordinary Dividends, Common Stock Customer relationships Customer Relationships [Member] Diluted earnings per common share attributable to common shareholders (in Canadian dollars per share) Diluted (in CAD per share) Earnings Per Share, Diluted Benefits Expected to be Paid by the Company Defined Benefit Plan, Expected Future Benefit Payment [Abstract] Preference Shares, Series 5 Series5 Preferred Stock [Member] Outstanding nonredeemable series 5 preferred stock or outstanding series 5 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Counterparty Name [Domain] Counterparty Name [Domain] Athabasca Regional Oil Sands System Athabasca Regional Oil Sands System [Member] Athabasca Regional Oil Sands System Preference Shares, Series 13 Series13 Preferred Stock [Member] Outstanding nonredeemable series 13 preferred stock or outstanding series 13 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Regulatory Liability [Domain] Regulatory Liability [Domain] Liquids Pipelines Liquids Pipelines Segment [Member] Represents the liquids pipelines segment of the entity. Liquids pipelines consists of common carrier and contract crude oil, natural gas liquids (NGL) and refined products pipelines and terminals in Canada and the United States, including the Canadian Mainline, Regional Oil Sands System, Southern Lights Pipeline, Spearhead Pipeline, Seaway Crude Pipeline (Seaway Pipeline) interest and other feeder pipelines. Ownership [Axis] Ownership [Axis] Annual vesting (as percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Retirement Benefits [Abstract] Retirement Benefits [Abstract] Customer [Axis] Customer [Axis] 2027 Lessor, Operating Lease, Payment to be Received, Year Three Common shares that can be sold under the ATM Program Sale of Stock, Consideration Received Per Transaction Term Loan Maturing In July 2027 Term Loan Maturing In July 2027 [Member] Term Loan Maturing In July 2027 Trade receivables and unbilled revenues Increase (Decrease) in Receivables Gas distribution sales Gas Distribution Service [Member] Gas Distribution Service [Member] Sustainability-linked bonds Sustainability-Linked Bonds [Member] Sustainability-Linked Bonds Magic Valley Wind Farm Magic Valley Wind Farm [Member] Magic Valley Wind Farm Foreign exchange contracts - United States dollar or GBP forwards - sell Foreign Exchange Forward Sell Contract [Member] Represents the contracts negotiated between two parties to sell foreign currency at a price specified at origination of the contract, with delivery and settlement at a specified future date. Income tax expense (Note 24) Income tax expense Income Tax Expense (Benefit) Interest cost Defined Benefit Plan, Interest Cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Derivative assets, total gross derivative instruments as presented Derivative Asset Inflation stretch factor (as percent) Public Utilities, Incentive Regulation, Inflation Stretch Factor Public Utilities, Incentive Regulation, Inflation Stretch Factor Options cancelled or expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Weighted average period over which compensation cost is expected to be recognized (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Total Operating Leases Land Leases Purchase Obligations Maintenance Obligation Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. Product Information [Line Items] Product Information [Line Items] Additions to intangible assets Payments to Acquire Intangible Assets Amount recognized in OCI: Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Interest expense (Note 17) Total interest expense Interest Expense, Operating and Nonoperating Land and right-of-way Land And Right Of Way [Member] Represents the land and right-of-way depreciable asset of the entity. Business Acquisition [Line Items] Business Acquisition [Line Items] Equity Investments Equity Method Investments [Policy Text Block] RNG Facilities RNG Facilities [Member] RNG Facilities All Adjustments to Compensation All Adjustments to Compensation [Member] Schedule of Long-Term Investments Equity Method Investments [Table Text Block] Proceeds from sale of equity method investments Proceeds from Divestiture of Interest in Joint Venture Additional paid-in capital Additional Paid in Capital Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Calvados Calvados [Member] Calvados Preference Shares, Series 3 Series3 Preferred Stock [Member] Outstanding nonredeemable series 3 preferred stock or outstanding series 3 preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Total lease income Operating Lease, Lease Income Debenture and term note issues, net of issue costs Proceeds from Issuance of Long-term Debt, Net of Issuance Costs Proceeds from Issuance of Long-term Debt, Net of Issuance Costs Balance at beginning of period, amount Balance at end of period, amount Common Stock, Value, Outstanding Commodity contracts Commodity Contract [Member] 4 years Operating Leases Land Leases Purchase Obligations Maintenance Obligation Due In Fourth Year Minimum amount of purchase obligation, land lease, operating lease, maintenance arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Future lease payments Lessor, Operating Lease, Payment to be Received Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity Address, State or Province Entity Address, State or Province 5.97% Senior Notes 5.97% Senior Notes [Member] 5.97% Senior Notes Accounts receivable from affiliates Increase (Decrease) in Due from Related Parties, Current Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Disposal group, consideration Disposal Group, Including Discontinued Operation, Consideration Schedule of Assumed Health Care Cost Trend Rates Schedule of Health Care Cost Trend Rates [Table Text Block] Financial Instruments [Domain] Financial Instruments [Domain] Preference Shares, Series 11 Series11 Preferred Stock [Member] Outstanding nonredeemable series 11 preferred stock or outstanding series 11 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Units outstanding at beginning of year Units outstanding at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Schedule of Net Benefit Costs Recognized Schedule of Net Benefit Costs [Table Text Block] Derivative Instruments Derivative [Member] Fair Value Estimate of Fair Value Measurement [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Interest rate contracts Interest Rate Contract [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income Derivative Instruments, Gain (Loss) [Line Items] Period to hedge exposures to the variability of cash flows for all forecasted transactions (in years) Maximum Length of Time Hedged in Cash Flow Hedge Payments to acquire equity method investments Payments to Acquire Equity Method Investments Income from equity investments (Note 13) Adjustment for (Income) Loss of Equity Method Investments Adjustment to net income or loss to remove the effect of (income) loss of equity method investments when calculating cash provided by or used in operating activities. Number of production facilities acquired Number Of Production Facilities Acquired Number Of Production Facilities Acquired Bakken Pipeline LLC Bakken Pipeline LLC [Member] Bakken Pipeline LLC Dividends payable Dividends Payable, Current EARNINGS PER COMMON SHARE Earnings Per Share [Text Block] Shares issued on exercise of stock options Shares issued on exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Preference Shares, Series H Series H Preferred Stock [Member] Change in unrealized gain on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Fair value recurring basis unobservable input reconciliation asset gain loss statement of other comprehensive income extensible list not disclosed flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Other Comprehensive Income Extensible List Not Disclosed Flag Units granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Income Taxes Income Tax, Policy [Policy Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Schedule of Lessee, Finance Lease Liability, Maturity Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Preference Shares, Series M Preference Shares, Series M [Member] Preference Shares, Series M PEO PEO [Member] ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligation Disclosure [Text Block] Fixed-to-Fixed Subordinated Note Due June 2054 Fixed-to-Fixed Subordinated Note Due June 2054 [Member] Fixed-to-Fixed Subordinated Note Due June 2054 Name Trading Arrangement, Individual Name Overfunded status at end of year Defined Benefit Plan, Funded (Unfunded) Status of Plan Regulated Business Operations [Axis] Regulated Business Operations [Axis] Information pertaining to business operations of the entity that are regulated by governmental organizations (local, state, county, country) or other regulatory bodies. Gray Oak Pipeline, LLC Gray Oak Pipeline, LLC [Member] Gray Oak Pipeline, LLC Total amount recognized in AOCI Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax Less than 1 year Maintenance Obligation Due In Next Twelve Months Minimum amount of maintenance arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Remaining lease term Lessee, Operating Lease, Remaining Lease Term Significantly Influenced Investees Long-Term Investments Investee [Member] Enbridge (U.S.) Inc. Enbridge U S Inc [Member] Represents Enbridge U.S. Inc. Preference Shares, Series 1 Series1 Preferred Stock [Member] Outstanding nonredeemable series 1 preferred stock or outstanding series 1 preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Weighted average standby fee (as a percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Total amount paid Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Share-Based Liabilities Paid East Tennessee Natural Gas, LLC East Tennessee Natural Gas, LLC [Member] East Tennessee Natural Gas, LLC Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Cactus II Pipeline LLC Cactus II Pipeline, LLC [Member] Cactus II Pipeline, LLC Capital Expenditure, Discontinued Operations Capital Expenditure, Discontinued Operations Floating-To-Fixed Interest Rate Swaps Floating-To-Fixed Interest Rate Swaps [Member] Floating-To-Fixed Interest Rate Swaps Largest Non-Affiliated Customer Largest Non-Affiliated Customer [Member] Largest Non-Affiliated Customer [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Less valuation allowance Deferred Tax Assets, Valuation Allowance WhiteWaterI Squared WhiteWaterI Squared [Member] WhiteWaterI Squared Line of credit facility, increase (decrease) Line of Credit Facility, Increase (Decrease), Net Proposed ROE (as percent) Public Utilities, Requested Return on Equity, Percentage Aggregate Intrinsic Value Share Based Compensation Arrangement by Share Based Payment Award, Options Outstanding Intrinsic Value [Abs]tract Other Other Equity Investee [Member] Represents other equity investments which are valued at equity method investment. Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Enbridge Employee Services, Inc. Health Reimbursement Account Plan Enbridge Employee Services, Inc, Health Reimbursement Account Plan [Member] Enbridge Employee Services, Inc, Health Reimbursement Account Plan Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Shares issued on vesting of restricted stock units (RSU), net of tax Restricted Stock, Value, Shares Issued Net of Tax Withholdings Other Adjustments to Additional Paid in Capital, Other Common shares (Note 20) Common Shares Common Stock [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 3.50% Senior Notes 3.50% Senior Notes [Member] 3.50% Senior Notes Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] OTHER LONG-TERM LIABILITIES Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Investment owned restricted cost Investment Owned, Restricted, Cost Asset Retirement Obligations [Line Items] Asset Retirement Obligations [Line Items] [Line Items] for Asset Retirement Obligations [Table] SHARE CAPITAL Equity [Text Block] SEGMENTED INFORMATION Segment Reporting Disclosure [Text Block] Change in unrealized gain/(loss) on net investment hedges Other Comprehensive Income Unrealized Gain (Loss) on Net Investment Hedges During Period Net of Tax This element represents change in hedging derivative instrument or the foreign currency transaction gain (loss) on the nonderivative hedging instrument designated as a hedge for net investment in foreign operations related to hedge ineffectiveness, which is included in earnings during the period. Measurement Basis [Axis] Measurement Basis [Axis] Title Trading Arrangement, Individual Title Income Taxes Income Tax Disclosure [Line Items] Consolidated Entities [Axis] Consolidated Entities [Axis] Cumulative Translation Adjustment Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Additional consideration Business Combination, Contingent Consideration, Liability Disposal Group Classification [Domain] Disposal Group Classification [Domain] Other Other Countries [Member] Represents other countries not specifically mentioned by the entity. Preference shares (Note 20) Preferred Shares Preferred Stock [Member] Common shares repurchased Payments for Repurchase of Common Stock Schedule of Significant Unobservable Inputs Used in The Fair Value Measurement of Level 3 Derivative Instruments Fair Value Inputs Assets (Liabilities) Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the asset or liabilities, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Finance lease, right-of-use asset, statement of financial position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Net purchase Long [Member] Loss from AOCI expected to be reclassified Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months RELATED PARTY TRANSACTIONS Related Party Transaction [Line Items] Schedule of Debt Schedule of Debt [Table Text Block] Operating and administrative Operating and administrative General and Administrative Expense Total operating lease liabilities Total Operating Lease, Liability Tri Global Energy, LLC Tri Global Energy, LLC [Member] Tri Global Energy, LLC Other Other Inventory, Net of Reserves 2029 Finance Lease, Liability, to be Paid, Year Five Foreign and other statutory rate differentials Income Tax Reconciliation Foreign and Other Statutory Income Tax Rate Differential Represents the amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit) and other statutory income tax rates. Carrying value Reported Value Measurement [Member] Participant contributions Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant Contractors [Abstract] Trade receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Gas imbalances Oil and Gas, Joint Interest Billing, Receivable, Current 2027 notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Maturing in Year Three Aggregate notional amount of derivative expressed in a nonmonetary rate, maturing in the third fiscal year following the balance sheet date. OTHER INCOME/(EXPENSE) Other Income and Other Expense Disclosure [Text Block] Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Sale of stock, number of shares issued in transaction (shares) Sale of Stock, Number of Shares Issued in Transaction DEBT Debt Disclosure [Text Block] Long-term derivative liabilities Derivative Liability, Noncurrent Rampion Offshore Wind Limited Rampion Offshore Wind Project [Member] Represents information pertaining to the Rampion offshore wind project. Shares issued on vesting of RSUs, net of tax Stock Issued During Period Value Restricted Stock Award Vested Stock Issued During Period Value Restricted Stock Award Vested Other Payments for (Proceeds from) Other Investing Activities Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Auditor Name Auditor Name Income tax on amounts reclassified to earnings Reclassification from AOCI, Current Period, Tax Current income taxes Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Regulatory assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Regulatory Assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Regulatory Assets Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Equity method investment direct ownership interest (as percent) Equity Method Investment, Additional Interest Acquired, Percent Equity Method Investment, Additional Interest Acquired, Percent Number Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Realized foreign currency gain/(loss) Realized Gain (Loss), Foreign Currency Transaction, before Tax Designated as hedging instrument Designated as Hedging Instrument [Member] Units outstanding at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Total amount recognized in Comprehensive income Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax Income taxes receivable Income Taxes Receivable, Current Capital expenditures Payments to Acquire Property, Plant, and Equipment Other long-term liabilities Other long-term liabilities Other Liabilities, Noncurrent Period of anticipated requirements for which the company maintains sufficient liquidity through committed credit facilities (in years) Period of Anticipated Requirements Covered by Committed Credit Facilities Represents the period of the entity's anticipated requirements which the entity can fund through committed credit facilities without having to access the capital markets. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Stock-Based Compensation Share-Based Payment Arrangement [Policy Text Block] 5.33% senior notes due December 2034 5.33% senior notes due December 2034 [Member] 5.33% senior notes due December 2034 Termination Date Trading Arrangement Termination Date Related Party Transaction [Table] Related Party Transaction [Table] Fair Value of Derivatives Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Total Operating Leases Land Leases Purchase Obligations Maintenance Obligation Abstract n/a Less than 1 year Long-Term Debt, Maturity, Year One Deferred income tax assets Deferred Tax Assets, Gross [Abstract] Shares issued, net of issue costs (in shares) Stock Issued During Period, Shares, Issued for Services Schedule of Estimated Fair Values Assigned to Net Assets and Final Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Leased assets Leaseholds and Leasehold Improvements [Member] Earnings attributable to controlling interests Earnings attributable to controlling interests Net Income (Loss) Attributable to Parent Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Weighted average discount rate Weighted Average Discount Rate [Abstract] Weighted Average Discount Rate Chapman Ranch Wind Farm Chapman Ranch Wind Farm [Member] Chapman Ranch Wind Farm Schedule of Actuarial Assumptions Used Defined Benefit Plan, Assumptions [Table Text Block] Income Statement [Abstract] Income Statement [Abstract] Period prior to the maturity of the grant for which weighted average share price is used to calculate cash awards (in days) Share Based Compensation, Arrangement by Share Based Payment Award, Calculation of Cash Awards Based on Weighted Average Share Price Period Prior to Maturity of Grant Represents the period prior to the maturity of the grant for which weighted average share price is used to calculate cash awards under the share-based compensation arrangement. Restricted Long-Term Investments and Cash Restricted Long Term Investments Policy [Policy Text Block] Disclosure of accounting policy for long-term investments that are restricted as to withdrawal or usage. 2 years Maintenance Obligation Due In Second Year Minimum amount of maintenance arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. 5.32% medium-term notes due August 2054 5.32% medium-term notes due August 2054 [Member] 5.32% medium-term notes due August 2054 Effect of translation of foreign denominated cash and cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Name Forgone Recovery, Individual Name Options vested at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Transportation revenue Transportation Revenue [Member] Transportation Revenue [Member] Operating leases (in years) Operating Lease, Weighted Average Remaining Lease Term Other Investments Investment, Policy [Policy Text Block] Other Other Noncash Income (Expense) Under construction Wind Turbines Solar Panels And Other [Member] Represents the wind turbines, solar panels and other depreciable assets of the entity. Schedule of Expected Benefit Payments and Employer Contributions Schedule of Expected Benefit Payments [Table Text Block] Price volatility (in $/MMBTU, $/barrel, $ / MW/H, percent) Derivative Asset (Liability) Net, Measurement Input Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Preference Shares and Characteristics of Preference Shares Schedule of Stock by Class [Table Text Block] Number of offshore wind projects Number of Offshore Wind Projects Number of Offshore Wind Projects Commodity and gas distribution costs Cost of Revenue 2 years Land Leases Future Minimum Payments Due In Two Years Amount of required minimum rental payments for land leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Natural gas Energy Related Inventory, Natural Gas in Storage (Earnings)/loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Long-term restricted cash Restricted Cash and Cash Equivalents, Noncurrent Dispositions Goodwill, written off related to sale of business unit Goodwill, Written off Related to Sale of Business Unit Preference Shares, Series D Series D Preferred Stock [Member] Reclassification to earnings of loss on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Electricity and transmission revenue Electricity and Transmission Revenue [Member] Electricity and Transmission Revenue [Member] Accumulated other comprehensive income (Note 22) Accumulated Other Comprehensive Income (Loss), Net of Tax MarEn Bakken Company LLC MaRen Bakken Company LLC [Member] MaRen Bakken Company LLC [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Affiliate loan receivable Other Receivable, after Allowance for Credit Loss, Noncurrent Gas mains, services and other Gas Mains Services And Other [Member] Represents the gas mains, services and other depreciable assets of the entity. Athabasca Indigenous Investments Limited Partnership Athabasca Indigenous Investments Limited Partnership [Member] Athabasca Indigenous Investments Limited Partnership Sale of noncontrolling interest in subsidiary (Note 8) Proceeds from Sale of Interest in Corporate Unit Weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Related Party [Axis] Related and Nonrelated Parties [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Schedule of Unrealized Gains and Losses Associated With Changes in The Fair Value of Non-Qualifying Derivatives Schedule Of Unrealized Gains And Losses On Nonqualifying Derivatives [Table Text Block] Tabular disclosure of unrealized gains and losses on non-qualifying derivatives of the entity. Schedule of Long Term and Short Term Debt [Table] Schedule of Long Term and Short Term Debt [Table] A table or schedule providing information pertaining to short-term or long-term debt arrangements. Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Name Awards Close in Time to MNPI Disclosures, Individual Name Sales Revenue, Net Revenue Benchmark [Member] Redemption of preference shares Payments for Repurchase of Preferred Stock and Preference Stock Schedule of Other Current Liabilities Other Current Liabilities [Table Text Block] Performance obligations expected to be fulfilled in future periods Revenue, Remaining Performance Obligation, Amount Schedule of Lessor, Operating Lease, Payments to be Received, Maturity Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block] Long-term derivative assets Derivative Asset, Noncurrent Liabilities settled Asset Retirement Obligation, Liabilities Settled Acquisition Goodwill, Acquired During Period Other current liabilities (Note 16) Other current liabilities Other current liabilities Other Liabilities, Current Schedule of The Maturity And Notional Principal or Quantity Outstanding Related to Derivative Instruments Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Change in estimate and other Asset Retirement Obligation, Revision of Estimate Segmented Information Segment Reporting Information [Line Items] All Trading Arrangements All Trading Arrangements [Member] Purchase price: Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held before Combination [Abstract] Vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] RISK MANAGEMENT AND FINANCIAL INSTRUMENTS Derivative [Line Items] Equity method investments Equity Method Investments Pay vs Performance Disclosure [Line Items] Preference Shares, Series 6 Preference Shares, Series 6 [Member] Preference Shares, Series 6 Derivative [Table] Derivative [Table] Dividend rate reset period (in years) Preferred Stock, Dividend Rate, Reset Period Preferred Stock, Dividend Rate, Reset Period Deferred income taxes Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Cash balance interest credit rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate Other Performance Measure, Amount Other Performance Measure, Amount Rate of salary increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Non-Revolving Term Loan Facility Maturing In June 2029 Non-Revolving Term Loan Facility Maturing In June 2029 [Member] Non-Revolving Term Loan Facility Maturing In June 2029 Common shares, outstanding (in shares) Balance at beginning of period (in shares) Balance at end of period (in shares) Common Stock, Shares, Outstanding Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Weighted average interest rate (as a percent) Short-Term Debt, Weighted Average Interest Rate, at Point in Time Accounts receivable from affiliates Other Receivables, Net, Current Total debt Debt and Lease Obligation Uncommitted Credit Facilities Uncommitted Credit Facility [Member] Represents information pertaining to uncommitted demand credit facilities. Operating lease liabilities - long-term Operating Lease, Liability, Noncurrent Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments Fair Value Measurement Inputs and Valuation Techniques [Line Items] Cash flow hedges Cash Flow Hedging [Member] Non-current assets Assets, Noncurrent Schedule of Regulatory Liabilities [Table] Regulated Operation, Regulatory Liability [Table] Purchase of noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Schedule of Regulatory Assets [Table] Regulated Operation, Regulatory Asset [Table] Schedule of Regulatory Liabilities Schedule of Regulatory Liabilities [Table Text Block] Service cost Service cost1 Defined Benefit Plan, Service Cost Preference Shares, Series S Preference Shares, Series S [Member] Preference Shares, Series S Equity securities Defined Benefit Plan, Equity Securities [Member] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Share repurchases at stated value (in shares) Treasury Stock, Shares, Acquired Regulated Business Operations [Domain] Regulated Business Operations [Domain] Identification of the business operation of the entity which is regulated by governmental organizations (local, state, county, country) or other regulatory bodies. Intersegment revenue Eliminations and Other Intersegment Eliminations [Member] Other current assets Other current assets Other current assets Other Assets, Current Investments [Domain] Investments [Domain] Deferred credits Deferred Credits Current Deferred Credits Current Included in OCI Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss) 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five Number of communities represented Number Of Communities Represented Number Of Communities Represented Commodity sales Commodity Sales Revenue [Member] Commodity Sales Revenue Blauracke GmbH Blauracke GMBH [Member] Blauracke GMBH Weighted Average Price/Volatility Weighted Average [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other long-term liabilities Other Liabilities [Member] Earnings allowed to be retained under earnings sharing mechanism (as percent) Public Utilities, Approved, Earnings Sharing Mechanism, Share Of Earnings, Percentage Excess Of ROE Public Utilities, Approved, Earnings Sharing Mechanism, Share Of Earnings, Percentage Excess Of ROE Prior service cost Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax Term of incentive regulation framework (in years) Public Utilities, Approved, Incentive Regulation Term Public Utilities, Approved, Incentive Regulation Term Cash and cash equivalents and restricted cash at beginning of year Cash and cash equivalents and restricted cash at end of year1 Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Deferred income taxes Deferred Income Tax Charge [Member] 3.43% Medium-Term Notes 3.43% Medium-Term Notes [Member] 3.43% Medium-Term Notes Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Total notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Derivative Nonmonetary Notional Amount Outstanding Security Exchange Name Security Exchange Name Basis spread on variable rate (as percent) Debt Instrument, Basis Spread on Variable Rate Westcoast Energy Inc. Westcoast Energy Inc [Member] Westcoast Energy Inc [Member] Long-term, restricted and other investments Payments to Acquire Long-Term Investments Options exercised (in Canadian dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Other comprehensive income/(loss) attributable to noncontrolling interests, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Preference Shares, Series 20 Preference Shares, Series 20 [Member] Preference Shares, Series 20 Discount rate (as a percent) Asset Retirement Obligation Discount Rate Represents the asset retirement obligation discount rate. Dividend reinvestment Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Dividend Reinvestment, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Dividend Reinvestment, Weighted Average Grant Date Fair Value Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Excluded Components of Fair Value Hedges Accumulated Other Comprehensive Income (Loss), Derivative Qualifying as Hedge, Excluded Component, Including Portion Attributable to Noncontrolling Interest [Member] Entity [Domain] Entity [Domain] Concentration (percent) Concentration Risk, Percentage Amortizable assets of investee Equity Method Investment, Unamortized Excess Purchase Price Over Net Book Value Amortizable Assets This element represents the unamortized excess of purchase price over underlying net book value of investee's assets at the purchase date recorded as unamortized assets. At-The-Market Offering At-The-Market Offering [Member] At-The-Market Offering Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Total net derivative asset/(liability) Fair Value Derivative Assets (Liabilities), at Fair Value, Net Eliminations and Other Consolidation, Eliminations [Member] Operating and administrative expense Operating And Administrative Expense [Member] Primary financial statement caption in which reported facts about operating and administrative expense have been included. Entity Voluntary Filers Entity Voluntary Filers Related Party Related Party [Member] Hedging Designation [Domain] Hedging Designation [Domain] Under-recovery of fuel costs Regulatory Assets (Liabilities), Under-recovery of Fuel Costs [Member] Regulatory Assets (Liabilities), Under-recovery of Fuel Costs PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Amortization/settlement of net actuarial (gain)/loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Income Tax Disclosure [Table] Income Tax Disclosure [Table] Table or schedule providing information pertaining to income tax. Period Two Debt Instrument, Interest Rate Terms, Period Two [Member] Debt Instrument, Interest Rate Terms, Period Two Entity Address, Country Entity Address, Country Gray Oak Holdings LLC Gray Oak Holdings LLC [Member] Gray Oak Holdings LLC [Member] Accounts receivable from affiliates Accounts Receivable, after Allowance for Credit Loss, Current Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Noncontrolling interest (percent) Subsidiary, Ownership Percentage, Parent Long-term debt Total Long-Term Debt Changes in net fair value of derivative assets and liabilities classified as Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] ACQUISITIONS AND DISPOSITIONS Mergers, Acquisitions and Dispositions Disclosures [Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Restricted cash Restricted Cash, Current Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Other Other Counterparties [Member] Represents the commodity clearing house and natural gas and crude physical counterparties to derivative agreements of the entity. 2027 Finance Lease, Liability, to be Paid, Year Three Gain on joint venture merger transaction (Note 13) Gain on joint venture merger transaction (Note 13) Gain on joint venture merger transaction Gain on sale Equity Method Investment, Realized Gain (Loss) on Disposal Total Enbridge Inc. shareholders' equity Parent [Member] Risk-free interest rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Performance multiplier Share Based Compensation, Arrangement By Share Based Payment Award, Calculation Of Cash Awards, Performance Multiplier Share Based Compensation, Arrangement By Share Based Payment Award, Calculation Of Cash Awards, Performance Multiplier Project [Axis] Project [Axis] Retirement-Eligible Employees Retirement-Eligible Employees [Member] Retirement-Eligible Employees [Member] Sale of stock, consideration received on transaction, net Sale of Stock, Consideration Received on Transaction, Net Sale of Stock, Consideration Received on Transaction, Net Liabilities Liabilities [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Operating revenues Revenues [Abstract] Aux Sable Aux Sable [Member] Represents Aux Sable investment. Preference Shares, Series E Preference Shares, Series E [Member] Preference Shares, Series E Earnings/(loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Preference Shares, Series 2 Preference Shares, Series 2 [Member] Preference Shares, Series 2 Regulatory Asset [Domain] Regulatory Asset [Domain] Trade payables and accrued liabilities Trade payables and accrued liabilities Accounts Payable and Other Accrued Liabilities, Current PEO Name PEO Name Right-of-ways commitments Land Leases Future Minimum Payments Due Abstract n/a Spectra Energy Capital, LLC Spectra Energy Corp [Member] Represents information pertaining to the Spectra Energy Corp. Guarantees [Abstract] Guarantees [Abstract] Award Type [Domain] Award Type [Domain] 2025 Lessor, Operating Lease, Payment to be Received, Year One Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Rampion Offshore Wind Limited Rampion Offshore Wind Limited [Member] Represents Rampion Offshore Wind Limited. Deferred income taxes (Note 24) Total deferred income tax assets Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Fair value of investments Investments, Fair Value Disclosure Finance lease liabilities - long-term Finance Lease, Liability, Noncurrent GOODWILL Goodwill Disclosure [Text Block] PENSION AND OTHER POSTRETIREMENT BENEFITS Retirement Benefits [Text Block] Deferred income tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Regulatory Liability [Axis] Regulatory Liability [Axis] Deferred project costs Regulatory Assets (Liabilities), Deferred Capital Project Costs [Member] Regulatory Assets (Liabilities), Deferred Capital Project Costs Changes In Accounting Policies New Accounting Pronouncements, Policy [Policy Text Block] Other Other Comprehensive Income, Other, Net of Tax Title and Position [Domain] Title and Position [Domain] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Other Postretirement Benefits Schedule of Defined Benefit Plans Disclosures [Table Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Impairment of long-lived assets Impairment loss Tangible Asset Impairment Charges Canada CANADA Seaway Crude Pipeline System Seaway Crude Pipeline System [Member] Seaway Crude Pipeline System Gas distribution sales Gas Distribution Revenue [Member] Gas Distribution Revenue Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Total deferred income tax assets, net Deferred Tax Assets, Net of Valuation Allowance 3 years Purchase Obligation, to be Paid, Year Three Supplementary cash flow information Supplemental Cash Flow Information [Abstract] Preference Shares, Series 7 Series 7 Preferred Stock [Member] Outstanding nonredeemable series 7 preferred stock or outstanding series 7 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Increase (decrease) in debt Debt Instrument, Increase (Decrease), Net Auditor Firm ID Auditor Firm ID Effective income tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Projected benefit obligation Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Hedging Designation [Axis] Hedging Designation [Axis] Fixed-to-Fixed Subordinated Notes Due March 2055 Fixed-to-Fixed Subordinated Notes Due March 2055 [Member] Fixed-to-Fixed Subordinated Notes Due March 2055 Fair Value, Concentration of Risk [Table] Fair Value, Concentration of Risk [Table] Schedule of Combined Financial Information Schedule of Joint Venture Equity Method Investments Summarized Income Statement Information [Table Text Block] Tabular disclosure of summarized income statement information related to joint venture equity method investments. RISK MANAGEMENT AND FINANCIAL INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] 2026 Finance Lease, Liability, to be Paid, Year Two Regulated Operations [Abstract] Regulated Operations [Abstract] Current portion of long-term debt (Note 17) Current maturities Long-Term Debt and Lease Obligation, Current Schedule of Maturities Schedule of Maturities of Long-Term Debt [Table Text Block] Individual: Individual [Axis] Asset retirement obligations Other current liabilities Asset Retirement Obligation, Current Accumulated other comprehensive income/(loss) (Note 22) AOCI Attributable to Parent [Member] Assumed debt Business Combination, Consideration Transferred, Liabilities Incurred United States Employees United States Employees [Member] Represents the employees of the entity who work in United States. Schedule of Our Transactions with Equity Investees Schedule of Related Party Transactions [Table Text Block] Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Interest rate contracts - short-term borrowings Interest Rate Contract For Short Term Borrowings [Member] Represents average short term interest rate swaps and options that are used to hedge against outstanding variable rate short-term debt. Schedule of Noncontrolling Interests Minority Interest [Table Text Block] Tabular disclosure of noncontrolling interest which includes name of the entity in which the company holds noncontrolling interest and the ownership held by the noncontrolling owners. Schedule of Accumulated Benefit Obligation and Fair Value of Plan Assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Segments [Axis] Segments [Axis] Operating revenues Business Acquisition, Pro Forma Revenue Derivative Instrument [Axis] Derivative Instrument [Axis] Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] 2028 notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Maturing in Year Four Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the fourth fiscal year following the balance sheet date. 3-Month Government Of Canada Treasury Bill 3-Month Government Of Canada Treasury Bill [Member] 3-Month Government Of Canada Treasury Bill Long-term debt Long-Term Debt, Gross Distributions from equity investments in excess of cumulative earnings Proceeds from Equity Method Investment, Distribution, Return of Capital Health care cost trend rate assumed for next year Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Total amount recognized in OCI Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Variable Interest Entity [Table] Variable Interest Entity [Table] Long-term investments (Note 13) Long-term investments Total long-term investments Long-Term Investments Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Pipelines Pipelines [Member] 2026 notional quantity (bcf / mmbbls) Derivative Nonmonetary Notional Amount Outstanding Maturing in Year Two Aggregate notional amount of derivative expressed in nonmonetary units, maturing in the second fiscal year following the balance sheet date. Term of credit facility Debt Instrument, Term Total finance lease liabilities Total finance lease liabilities Finance Lease, Liability 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Four All Individuals All Individuals [Member] Derivative liabilities, total net derivative instruments Derivative Liability, Net of Amounts Available for Offset Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, net of amounts that are available for offset but as a policy have been elected not to be offset. Goodwill, gross at end of period Goodwill, Gross Receivables [Abstract] Receivables [Abstract] Preference Shares, Series L Series L Preferred Stock [Member] Outstanding nonredeemable series L preferred stock or outstanding series L preferred stock, which is classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity if redemption is outside the control of the issuer. Unrecognized compensation expense related to non-vested units granted Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Schedule of Committed Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Change in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] Preference Shares, Series 15 Series15 Preferred Stock [Member] Outstanding nonredeemable series 15 preferred stock or outstanding series 15 preferred stock, which is classified within stockholders' equity, if nonredeemable or redeemable solely at the option of the issuer and is classified within temporary equity, if redemption is outside the control of the issuer. Other current liabilities Liability, Defined Benefit Plan, Current Non-recourse debt Disposal Group, Including Discontinued Operation, Consideration Receivable Disposal Group, Including Discontinued Operation, Consideration Receivable Non-current liabilities Liabilities, Noncurrent Deferred income taxes (Note 24) Deferred income taxes Total deferred income tax liabilities Deferred Income Tax Liabilities, Net Unrealized gain (loss) on investments Unrealized Gain (Loss) on Investments Expected volatility (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Schedule of Outstanding Stock Units Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-Term Debt Conversion of stock, shares converted (shares) Conversion of Stock, Shares Converted Schedule of the Carrying Amount of Interest in VIEs Schedule Of Carrying Amount Of Investment And Maximum Loss Exposure Variable Interest Entities Text Block [Table Text Block] Represents the carrying amount and maximum loss exposure schedule for unconsolidated variable interest entities. Capitalized interest Interest Costs Capitalized Adjustment Preference shares conversion ratio Preferred Stock, Convertible, Conversion Ratio Payments of stock issuance costs Issuance costs Payments of Stock Issuance Costs COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Change in projected benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Impairment of long-lived assets Impairment of long-lived assets Impairment, Long-Lived Asset, Held-for-Use Measure: Measure [Axis] Debt Instrument, Interest Rate Terms [Domain] Debt Instrument, Interest Rate Terms [Domain] Debt Instrument, Interest Rate Terms Units outstanding at end of year Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Total net derivative instruments Derivative Asset (Liability), Net of Amounts Available for Offset Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, after the effects of master netting arrangements and net of amounts that are available for offset but as a policy have been elected not to be offset. Amount of unrealized gain/(loss) recognized in OCI Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Reclassification, before Tax Entity Emerging Growth Company Entity Emerging Growth Company Other Other Sundry Liabilities, Current Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements 5 years Long-Term Debt, Maturity, Year Five Long-term debt Business Combination, Consideration Transferred, Liabilities Incurred, Non-Current Portion Business Combination, Consideration Transferred, Liabilities Incurred, Non-Current Portion Net change in commercial paper and credit facility draws Proceeds from Repayments of Commercial Paper and Lines of Credit The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper and from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). Total gain/(loss), unrealized Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset and Liability Gain (Loss) [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Period Four Debt Instrument, Interest Rate Terms, Period Four [Member] Debt Instrument, Interest Rate Terms, Period Four Other comprehensive (income)/loss reclassified to earnings Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Finance lease right-of-use assets, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Long-term investments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-Term Investments Amount of investments, excluding restricted investments, expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Weighted average remaining lease term Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term 2028 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Table] Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Table] Statement [Table] Statement [Table] Disposal Group, Alliance Pipeline And Aux Sable Disposal Group, Alliance Pipeline And Aux Sable [Member] Disposal Group, Alliance Pipeline And Aux Sable Amount included in AOCI Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax [Abstract] Storage Compressors, Meters and Other Operating Equipment [Member] SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Schedule of Assets and Liabilities of Consolidated VIEs Schedule of Variable Interest Entities [Table 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Credit Facility [Axis] Credit Facility [Axis] Other Finance Lease Obligations [Member] Finance Lease Obligations Realized loss associated with the settlement of foreign exchange forward contracts Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax Noncontrolling interests Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount Long-term debt Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Cash Payments to Acquire Businesses, Gross Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization INTANGIBLE ASSETS Intangible Assets Disclosure [Text Block] Unconsolidated equity method investments Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Affiliated Entity Affiliated Entity [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Term out option period (in years) Line Of Credit Facility, Term Out Option Period Line Of Credit Facility, Term Out Option Period Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Geographical [Domain] Geographical [Domain] Pipeline future abandonment costs Environmental Restoration Costs [Member] Asset Retirement Obligation Disclosure [Abstract] Asset Retirement Obligation Disclosure [Abstract] Distributions to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Concentration Risk Type [Axis] Concentration Risk Type [Axis] Common shares (2,178 and 2,125 outstanding at December 31, 2024 and 2023, respectively) Common Stock, Value, Issued Presented as follows: Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] 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activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financial instruments Deferred Tax Assets, Hedging Transactions Total notional quantity (MWH) Derivative Nonmonetary Rate Notional Amount Outstanding Derivative Nonmonetary Rate Notional Amount Outstanding Schedule of Other Income and Expenses Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Preference shares Preferred Stock, Value, Issued EIH S.a.r.l. EIH S.a.r.l. [Member] EIH S.a.r.l. Regulatory liabilities Total regulatory liabilities Regulatory Liability Total deferred income tax liabilities Deferred Tax Liabilities, Gross East-West Tie Limited Partnership East-West Tie Limited Partnership [Member] East-West Tie Limited Partnership Earnings per common share attributable to common shareholders (in Canadian dollars per share) Basic (in CAD per share) Earnings Per Share, Basic Common shares issued, net of issue costs Proceeds from Issuance of Common Stock Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Plan asset allocations Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Goodwill [Table] Goodwill [Table] Part VI.1 tax, net of federal Part I deduction Income Tax Reconciliation, Dividends Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to taxes on preferred dividends paid, net of allowable deductions. Distributions from equity investments Proceeds from Equity Method Investment, Distribution 2025 Finite-Lived Intangible Asset, Expected Amortization, Year One Draws Long-Term Line of Credit Contingent future payment (up to) Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Units granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Contributions Noncontrolling Interest, Increase from Subsidiary Equity Issuance Floating Rate Notes Floating Rate Notes [Member] Floating Rate Notes Preference Shares, Series 8 Preference Shares, Series 8 [Member] Preference Shares, Series 8 Operating lease income Operating Lease, Lease Income, Lease Payments Total operating revenues (Note 4) Total revenue Revenues Operating revenues Revenues STOCK OPTION AND STOCK UNIT PLANS Share-Based Payment Arrangement [Text Block] Discount to the market price available to each rights holder, other than the acquiring person and related parties, under the shareholder rights plan (as a percent) Shareholder Rights Plan Discount On Purchase Of Common Shares By Rights Holder Represents the discount on the market price, expressed as a percentage, on purchase of common shares of the entity, which is available to the rights holder, other than the acquiring person and related parties acquiring a specified percentage or more of the entity's common shares outstanding. Cash consideration Asset Acquisition, Consideration Transferred Leases Lessee, Leases [Policy Text Block] Schedule of Outstanding Stock Options Share-Based Payment Arrangement, Option, Activity [Table Text Block] Hohe See and Albatros Offshore Wind Facilities Hohe See and Albatros Offshore Wind Facilities [Member] Hohe See and Albatros Offshore Wind Facilities Total intrinsic value of awards exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Compensation expense Share-Based Payment Arrangement, Expense Other Other Non Controlling Interest [Member] Represents the Other entities that hold noncontrolling interest. Options granted (in Canadian dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Projected benefit obligation Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Business Acquisition [Axis] Business Acquisition [Axis] Percentage of replacement under PIR program Public Utilities Modification Of Infrastructure, Percentage Public Utilities Modification Of Infrastructure, Percentage Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] REVENUE Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Finance lease liabilities - current Finance Lease, Liability, Current Units outstanding at beginning of year (in shares) Units outstanding at end of year (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Other contracts Other Contract [Member] Revenue recognized Contract with customer, liability, revenue recognized Contract with Customer, Liability, Revenue Recognized Foreign exchange contracts Foreign Exchange Contract [Member] Total Purchase Obligation Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Sabal Trail Transmission, LLC Sabal Trail Transmission L L C [Member] Represents Sabal Trail Transmission, LLC. Entity Current Reporting Status Entity Current Reporting Status Deficit Retained Earnings [Member] Canadian financial institutions Canadian Financial Institutions [Member] Represents the Canadian financial institutions which are counterparties to derivative agreements with the entity. Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Noncurrent liabilities long term debt Asset Acquisition, Lease Liability, Non-Current Asset Acquisition, Lease Liability, Non-Current Restricted Stock Units (RSU) Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] 3.98% Senior Notes Due 2040 3.98% Senior Notes Due 2040 [Member] 3.98% Senior Notes Due 2040 [Member] Tres Palacios Holdings LLC Tres Palacios Holdings LLC [Member] Tres Palacios Holdings LLC 5 years Maintenance Obligation Due In Fifth Year Minimum amount of maintenance arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded obligations, long-term commitments, and short-term commitments. Net assets Carrying amount of investment in VIE Net Assets