Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax benefit at U.S. statutory rate	$ 121	$ 543	$ 365
Valuation allowance	13	(243)	(63)
Non-controlling interest	10	(6)	(4)
Tax rate changes	13
Dividends received	(24)
Income not subject to taxation	(64)	(287)	(314)
State taxes		103
Other	9	6	(4)
Income tax benefit (expense)	$ 78	$ 116	$ (20)