Leases (Additional Information for Leases) (Details) - CAD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Cash paid for amounts included in the measurement of lease liabilities ($) | |||
| Operating cash outflows from operating leases | $ 135 | $ 129 | $ 142 |
| Operating cash outflows from finance leases | 0 | 1 | 3 |
| Financing cash outflows from finance leases | 7 | 68 | 59 |
| Right-of-use assets obtained in exchange for lease liabilities ($) | |||
| Operating lease | 142 | 135 | 53 |
| Finance lease | $ 7 | $ 6 | $ 0 |
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- Definition Right-Of-Use Assets Obtained In Exchange For Lease Liabilities [Abstract] No definition available.
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- References No definition available.
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- Definition Amount of interest paid on finance lease liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash outflow for principal payment on finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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