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SEGMENTED INFORMATION - Schedule of Reporting Information by Segment (Details) $ in Millions, $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 17, 2022 CAD ($) | Aug. 17, 2022 USD ($) | Dec. 31, 2024 CAD ($) | Sep. 30, 2024 CAD ($) | Jun. 30, 2024 CAD ($) | Mar. 31, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Sep. 30, 2023 CAD ($) | Jun. 30, 2023 CAD ($) | Mar. 31, 2023 CAD ($) | Dec. 31, 2024 CAD ($) | Dec. 31, 2023 CAD ($) | Dec. 31, 2022 CAD ($)
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  | $ 16,217 | $ 14,882 | $ 11,336 | $ 11,038 | $ 11,298 | $ 9,844 | $ 10,432 | $ 12,075 | $ 53,473 | $ 43,649 | $ 53,309
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (9,427) | (8,600) | (8,219)
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (2,465)
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 2,304 | 1,816 | 2,056
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 1,091 | 0 | 0
Gain on joint venture merger transaction | $ 1,100 | $ 832 |  |  |  |  |  |  |  |  | 0 | 0 | 1,076
Earnings before interest, income taxes and depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 18,789 | 15,388 | 13,156
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | (5,167) | (4,613) | (4,317)
Interest expense (Note 17) |  |  |  |  |  |  |  |  |  |  | (4,419) | (3,812) | (3,179)
Earnings before income taxes |  |  |  |  |  |  |  |  |  |  | 7,299 | 7,879 | 4,542
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 6,834 | 4,708 | 4,690
Property, plant and equipment, net |  |  | 131,104 |  |  |  | 104,641 |  |  |  | 131,104 | 104,641 | 104,460
Business Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 52,438 | 42,189 | 49,911
Commodity and gas distribution costs |  |  |  |  |  |  |  |  |  |  | (27,910) | (20,012) | (29,204)
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (9,397) | (8,585) | (8,116)
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  | (190) | (419) | (493)
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | (2,465)
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 2,321 | 1,837 | 2,060
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 1,091 |  |
Gain on joint venture merger transaction |  |  |  |  |  |  |  |  |  |  |  |  | 1,076
Other income |  |  |  |  |  |  |  |  |  |  | 436 | 378 | 387
Business Segments | Liquids Pipelines |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 38,183 | 29,882 | 37,174
Commodity and gas distribution costs |  |  |  |  |  |  |  |  |  |  | (25,283) | (17,106) | (25,495)
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (4,495) | (4,659) | (4,318)
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  | (2) | 145 | (258)
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 1,051 | 1,007 | 785
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 0 |  |
Gain on joint venture merger transaction |  |  |  |  |  |  |  |  |  |  |  |  | 0
Other income |  |  |  |  |  |  |  |  |  |  | 77 | 114 | 53
Earnings before interest, income taxes and depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 9,531 | 9,383 | 7,941
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 1,157 | 1,158 | 1,418
Property, plant and equipment, net |  |  | 53,863 |  |  |  | 51,855 |  |  |  | 53,863 | 51,855 | 53,573
Business Segments | Gas Transmission |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 6,199 | 5,854 | 5,426
Commodity and gas distribution costs |  |  |  |  |  |  |  |  |  |  | (130) | (15) | 0
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (2,322) | (2,380) | (2,254)
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  | (162) | 0 | 0
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | (2,465)
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 812 | 688 | 1,133
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 1,063 |  |
Gain on joint venture merger transaction |  |  |  |  |  |  |  |  |  |  |  |  | 1,076
Other income |  |  |  |  |  |  |  |  |  |  | 196 | 117 | 210
Earnings before interest, income taxes and depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 5,656 | 4,264 | 3,126
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 2,571 | 1,944 | 1,690
Property, plant and equipment, net |  |  | 34,683 |  |  |  | 31,016 |  |  |  | 34,683 | 31,016 | 29,666
Business Segments | Gas Distribution and Storage |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 7,542 | 5,976 | 6,729
Commodity and gas distribution costs |  |  |  |  |  |  |  |  |  |  | (2,501) | (2,871) | (3,693)
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (2,276) | (1,285) | (1,289)
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  | (3) | (281) | 0
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 3 | 2 | 1
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 0 |  |
Gain on joint venture merger transaction |  |  |  |  |  |  |  |  |  |  |  |  | 0
Other income |  |  |  |  |  |  |  |  |  |  | 104 | 51 | 79
Earnings before interest, income taxes and depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 2,869 | 1,592 | 1,827
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 2,386 | 1,451 | 1,499
Property, plant and equipment, net |  |  | 38,636 |  |  |  | 18,766 |  |  |  | 38,636 | 18,766 | 17,857
Business Segments | Renewable Power Generation |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 514 | 477 | 582
Commodity and gas distribution costs |  |  |  |  |  |  |  |  |  |  | 4 | (20) | (16)
Operating and administrative |  |  |  |  |  |  |  |  |  |  | (304) | (261) | (255)
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  | (23) | (283) | (235)
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0
Income from equity investments |  |  |  |  |  |  |  |  |  |  | 455 | 140 | 141
Gain on disposition of equity investments |  |  |  |  |  |  |  |  |  |  | 28 |  |
Gain on joint venture merger transaction |  |  |  |  |  |  |  |  |  |  |  |  | 0
Other income |  |  |  |  |  |  |  |  |  |  | 59 | 96 | 45
Earnings before interest, income taxes and depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 733 | 149 | 262
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 661 | 100 | 50
Property, plant and equipment, net |  |  | 3,612 |  |  |  | 2,706 |  |  |  | 3,612 | 2,706 | 3,082
Eliminations and Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segmented Information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | (1,904) | 916 | (1,118)
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 59 | 55 | 33
Property, plant and equipment, net |  |  | $ 310 |  |  |  | $ 298 |  |  |  | $ 310 | $ 298 | $ 282

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