Income Taxes - EEGH - Net Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 153,000,000	$ 145,000,000
Additions for tax positions of prior years	13,000,000	6,000,000
Reductions for tax positions of prior years	(83,000,000)	(1,000,000)
Ending balance	97,000,000	153,000,000
Unrecognized tax benefits	100,000,000	141,000,000
EEGH
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	0	2,000,000
Additions for tax positions of prior years	0	5,000,000
Reductions for tax positions of prior years	0	(7,000,000)
Ending balance	0	$ 0
Unrecognized tax benefits	$ 0