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Ownership Percentage, Additional Interest Acquired

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Amount of capital expenditure attributable to discontinued operations.

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Value of property contributed in noncash investing and financing activities.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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LONG-TERM INVESTMENTS - Equity Investment Transaction (Details) € in Millions, $ in Millions, $ in Millions									12 Months Ended
	May 29, 2024 CAD ($)	May 29, 2024 USD ($)	Nov. 15, 2023 CAD ($)	Nov. 15, 2023 USD ($)	Nov. 03, 2023 CAD ($)	Nov. 03, 2023 EUR (€)	Aug. 17, 2022 CAD ($)	Aug. 17, 2022 USD ($)	Dec. 31, 2024 CAD ($)	Dec. 31, 2023 CAD ($)	Dec. 31, 2022 CAD ($)	May 28, 2024	Nov. 03, 2023 EUR (€)	Aug. 16, 2022
Schedule of Equity Method Investments [Line Items]
Long-term debt									$ 101,819
Proceeds from sale of equity method investments							$ 522	$ 404
Gain on joint venture merger transaction							$ 1,100	$ 832	$ 0	$ 0	$ 1,076
Whistler Parent JV
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	19.00%	19.00%
Cash consideration includes an upfront payment	$ 487	$ 357
Reduction to property, plant and equipment, net and increase to long-term investments	$ 321	$ 235
Whistler Parent JV \| WhiteWaterI Squared
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	50.60%	50.60%
Whistler Parent JV \| MPLX
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	30.40%	30.40%
Rio Bravo
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	25.00%	25.00%										100.00%
Capital Expenditure, Discontinued Operations		$ 150
Fox Squirrel Solar LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)			50.00%	50.00%
Cash consideration includes an upfront payment			$ 157	$ 115
Investment company committed capital threshold amount			$ 591	$ 426
Hohe See Offshore And Albatros Offshore Wind Farm
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)					49.90%								49.90%
Ownership interest acquired additionally (as a percent)					24.45%								24.45%
Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII)
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired additionally (as a percent)					49.00%								49.00%
Payments to acquire equity method investments					$ 391	€ 267
Long-term debt					$ 524								€ 358
Gray Oak Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)							58.50%	58.50%						22.80%
DCP LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)							13.20%	13.20%						28.30%