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Derivative Instruments - Volumetric Underlying Derivative Transactions (Details) - Buy MWh in Thousands, MMBTU in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022 MMBTU MWh	Dec. 31, 2021 MMBTU MWh
(Loss) gain on non-trading derivatives, net | Natural Gas
Derivatives, Fair Value [Line Items]
Net notional volume (energy measure)	4,090	3,862
(Loss) gain on non-trading derivatives, net | Electricity
Derivatives, Fair Value [Line Items]
Net notional volume (energy measure) | MWh	1,891	1,785
(Loss) gain on trading derivatives, net | Natural Gas
Derivatives, Fair Value [Line Items]
Net notional volume (energy measure)	2,076	1,536

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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