Schedule of Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]
Trojan decommissioning activities	$ 174	$ 170
Utility plant	85	86
Non-utility property	27	33
Asset Retirement Obligation	286	289	$ 269	$ 291
Asset Retirement Obligation, Current	14	32
Asset Retirement Obligations, Noncurrent	272	257
Asset Retirement Obligation, Cash Paid to Settle	$ (25)	$ (27)	$ (18)