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Risk Management Activities - Maturity of Non-Hedges (Details) - Dec. 31, 2022 - Electricity - Non-hedge - Commodity risk management | CAD ($) | cADPerMegawattHour
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2023 |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | $ 3,329 |
Average prices | cADPerMegawattHour |  | cADPerMegawattHour 78.27
2024 |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | 3,338 |
Average prices | cADPerMegawattHour |  | 80.22
2025 |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | 2,628 |
Average prices | cADPerMegawattHour |  | 82.22
2026 |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | 0 |
Average prices | cADPerMegawattHour |  | 0
2027 |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | 0 |
Average prices | cADPerMegawattHour |  | 0
2028 and thereafter |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Notional amount | $ | $ 0 |
Average prices | cADPerMegawattHour |  | cADPerMegawattHour 0

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