Variable Interest Entity and Noncontrolling Interests - Income or loss attributable to third party investors (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Noncontrolling Interest [Line Items]
Amounts attributable to non-redeemable noncontrolling interests	$ 0	$ 0	$ (78)
Amounts attributable to redeemable noncontrolling interests	1	(6)	(4)
Net (income) loss attributable to noncontrolling interests	$ 1	$ (6)	$ (82)