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Risk Management Activities - Netting Arrangements (Details) - CAD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Current risk management liabilities |  |
Disclosure of financial liabilities [abstract] |  |
Gross amounts of recognized financial liabilities | $ (1,953) | $ (529)
Amounts set off | 883 | 307
Net amounts presented on the statement of financial position | (1,033) | (211)
Master netting arrangements | 62 | 92
Net amount | (971) | (119)
Long-term risk management liabilities |  |
Disclosure of financial liabilities [abstract] |  |
Gross amounts of recognized financial liabilities | (449) | (89)
Amounts set off | 43 | 16
Net amounts presented on the statement of financial position | (402) | (70)
Master netting arrangements | 7 | 23
Net amount | (395) | (47)
Accounts payable and accrued liabilities |  |
Disclosure of financial liabilities [abstract] |  |
Gross amounts of recognized financial liabilities | (1,344) | (689)
Amounts set off | 934 | 571
Net amounts presented on the statement of financial position | (411) | (118)
Master netting arrangements | 176 | 35
Net amount | (235) | (83)
Current risk management assets |  |
Disclosure of financial assets [abstract] |  |
Gross amounts of recognized financial assets | 1,602 | 636
Amounts set off | (883) | (307)
Net amounts presented on the statement of financial position | 688 | 316
Master netting arrangements | (62) | (92)
Net amount | 626 | 224
Long-term risk management assets |  |
Disclosure of financial assets [abstract] |  |
Gross amounts of recognized financial assets | 204 | 285
Amounts set off | (43) | (16)
Net amounts presented on the statement of financial position | 157 | 260
Master netting arrangements | (7) | (23)
Net amount | 150 | 237
Trade and other receivables |  |
Disclosure of financial assets [abstract] |  |
Gross amounts of recognized financial assets | 1,330 | 699
Amounts set off | (934) | (571)
Net amounts presented on the statement of financial position | 396 | 128
Master netting arrangements | (176) | (35)
Net amount | $ 220 | $ 93

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