Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Income tax benefit at U.S. statutory rate	$ 193	$ (2)	$ 121
Valuation allowance	(1)	100	13
Non-controlling interest	23	38	10
Credits and incentives	26
Uncertain tax positions	17
Deconsolidation	23
Tax gain no on books	(83)
Tax rate changes			13
Dividends received	(20)	(23)	(24)
Income not subject to taxation	(239)	(88)	(64)
State taxes	(26)	(49)
Other	(3)	(10)	9
Income tax (expense) benefit	$ (90)	$ (34)	$ 78