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v3.23.2

Financial and Other Derivative Instruments (Cumulative Gross Volume of Derivative Contracts Outstanding) (Details) - 6 months ended Jun. 30, 2023 | CAD ($) MWh MMBTU T gal | USD ($)
--- | --- | ---
Natural gas (MMBtu) |  |
Derivative [Line Items] |  |
Commodity, energy measures | MMBTU | 2,121,182,323 |
Electricity (MWh) |  |
Derivative [Line Items] |  |
Commodity, energy measures | 45,914,461 |
Oil (Gallons) |  |
Derivative [Line Items] |  |
Commodity, volume measure | gal | 5,688,000 |
Foreign currency exchange ($ CAD) |  |
Derivative [Line Items] |  |
Commodity, monetary measure | $ | $ 159,105,250 |
FTR (MWh) |  |
Derivative [Line Items] |  |
Commodity, energy measures | 140,020 |
Renewable Energy Certificates (MWh) |  |
Derivative [Line Items] |  |
Commodity, energy measures | 11,341,187 |
Carbon emissions (Metric Tons) |  |
Derivative [Line Items] |  |
Commodity, mass measure | T | 1,413,896 |
Interest rate contracts ($ USD) |  |
Derivative [Line Items] |  |
Commodity, monetary measure | $ |  | $ 500,000,000

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