Early Plant Retirements/Asset Dispositions Early Plant Retirements/Asset Dispositions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Early Plant Retirements [Abstract]
ZEC Charge per kwh			$ 0.004
Proceeds from Divestiture of Businesses			1,920,000,000
Impairment of Long-Lived Assets to be Disposed of	$ 2,162,000,000	$ 519,000,000	43,000,000	$ 2,691,000,000
ZEC Charge per MWh			10
Early Plant Retirements/Asset Dispositions [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 2,162,000,000	$ 519,000,000	43,000,000	2,691,000,000
Proceeds from Divestiture of Businesses			1,920,000,000
ZEC Charge per MWh			10
Expected Nuclear Production tax Credit per MWh			15
Energy Holdings [Member]
Early Plant Retirements [Abstract]
Impairment of Long-Lived Assets to be Disposed of			53,000,000
Early Plant Retirements/Asset Dispositions [Line Items]
Impairment of Long-Lived Assets to be Disposed of			$ 53,000,000
Other Production-Solar
Early Plant Retirements [Abstract]
Gain (Loss) on Disposition				63,000,000
Deferred ITC previously recognized				185,000,000
Disposal group, gain (loss) on sale tax impact				62,000,000
Early Plant Retirements/Asset Dispositions [Line Items]
Gain (Loss) on Disposition				63,000,000
Deferred ITC previously recognized				185,000,000
Disposal group, gain (loss) on sale tax impact				$ 62,000,000