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Credit Facilities, Long-Term Debt and Lease Liabilities - Currency Impacts (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about borrowings [line items] |  |  |
Net increase (decrease) in borrowings under credit facilities | $ (143) | $ 46 | $ (449)
USD | Senior Notes and Tax Equity |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Notional amount | 90 | 27 |
AUD | Non-Recourse Senior Secured Notes |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Net increase (decrease) in borrowings under credit facilities | $ (5) | $ (9) |

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- Definition The cash inflow (outflow) due to an increase (decrease) in current borrowings. [Refer: Current borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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