Early Plant Retirements/Asset Dispositions Early Plant Retirements/Asset Dispositions (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Early Plant Retirements [Abstract]
ZEC Charge per kwh	$ 0.004
ZEC Charge per MWh	10
Early Plant Retirements/Asset Dispositions [Line Items]
ZEC Charge per MWh	10
Expected Nuclear Production tax Credit per MWh	$ 15
Fossil Fuel Plant
Early Plant Retirements [Abstract]
Impairment of Long-Lived Assets to be Disposed of		$ 43,000,000
Early Plant Retirements/Asset Dispositions [Line Items]
Impairment of Long-Lived Assets to be Disposed of		43,000,000
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