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Derivative and Financial Instruments - Schedule of Net Exposures from Outstanding Commodity Derivative Contracts (Details) - Short - Commodity Contract - Bcf	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Natural Gas and Power, Fixed Price
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(23)	(14)
Natural Gas and Power, Basis
Trading Activity, Gains and Losses, Net [Line Items]
Commodity derivatives - volumetric material net exposures	(4)	(8)

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