Asset Retirement Obligations - EEGH - Change in Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	$ 1,328	$ 1,340
Additions	56	32
Retirements	(64)	(122)
Accretion	54	47
Ending Balance	1,428	1,328
Total ARO liability	1,428	1,328
EEGH
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning Balance	48	55
Additions	0	4
Retirements	(19)	(12)
Accretion	1	1
Ending Balance	30	48
Other current liabilities	5	25
Other long-term liabilities	25	23
Total ARO liability	$ 30	$ 48