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Other Income, Net (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Other Income and Expenses [Abstract] |  |
Equity component of AFUDC | $ 139 | $ 101
Non-service component of net periodic benefit cost | 73 | 62
Interest income | 64 | 76
Equity income | 14 | 14
Gain on disposal of Aitken Creek, pre-tax (Note 21) | 0 | 23
Gain on derivatives, net | 0 | 9
Net foreign exchange (loss) gain | (10) | 4
Other | 8 | 2
Other income, net | $ 288 | $ 291

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