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Exchangeable Securities - Schedule of Exchangeable Securities (Details) - CAD ($) $ in Millions | Oct. 30, 2020 | May 01, 2019 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of detailed information about borrowings [line items] |  |  |  |
Total exchangeable securities |  |  | $ 3,475 | $ 2,423
Brookfield Renewable Partners | Investment Agreement |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Investment in tranche | $ 400 | $ 350 |  |
7% Unsecured Subordinated Debentures Due May 1, 2039 |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Exchangeable debentures – due May 1, 2039 |  |  | $ 350 | $ 350
Interest |  | 7.00% | 7.00% | 7.00%
Exchangeable preferred shares |  |  | $ 400 | $ 400
Total exchangeable securities |  |  | 750 | 750
Cost | 7% Unsecured Subordinated Debentures Due May 1, 2039 |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Exchangeable debentures – due May 1, 2039 |  |  | 339 | 335
Exchangeable preferred shares |  |  | 400 | 400
Total exchangeable securities |  |  | $ 739 | $ 735

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