Stockholders' Deficit - Schedule of Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Equity, beginning balance	$ (1,352)	$ (1,275)	$ (1,312)	$ (1,290)
Redeemable Noncontrolling Interests, beginning balance		541
Comprehensive income (loss)	(28)	(37)	(324)	6
Distributions to noncontrolling interests	(19)	(11)	(5)	(17)
Purchases of subsidiary shares from noncontrolling interests	5			(1)
Contributions from noncontrolling interests	1	1
Noncontrolling interest in acquired entity			2
Adjustment to redemption value of redeemable noncontrolling interests	(14)	(32)	(20)	(7)
Cancellation of restricted stock for tax withholdings on vested shares		(4)		(8)
Share-based compensation	4	6	3	5
Equity, ending balance	(1,403)	(1,352)	(1,656)	(1,312)
Redeemable Noncontrolling Interests, ending balance	583
Redeemable Noncontrolling Interests (Non- Equity)
Redeemable Noncontrolling Interests, beginning balance	561	541	493	480
Comprehensive income (loss)	28		21
Comprehensive income (loss) attributable to redeemable noncontrolling interest		21		16
Distributions to noncontrolling interests	(21)		(39)
Distributions to redeemable noncontrolling interests		(33)		(12)
Purchases of subsidiary shares from noncontrolling interests	(6)	(1)		1
Contributions from noncontrolling interests		1		1
Noncontrolling interest in acquired entity	7		3
Adjustment to redemption value of redeemable noncontrolling interests	14	32	20	7
Redeemable Noncontrolling Interests, ending balance	583	561	498	493
Common Stock
Equity, beginning balance	1	1	1	1
Equity, ending balance	1	1	1	1
Additional Paid-in Capital
Equity, beginning balance	2,054	2,084	2,107	2,118
Purchases of subsidiary shares from noncontrolling interests	5			(1)
Adjustment to redemption value of redeemable noncontrolling interests	(14)	(32)	(20)	(7)
Cancellation of restricted stock for tax withholdings on vested shares		(4)		(8)
Share-based compensation	4	6	3	5
Equity, ending balance	2,049	2,054	2,090	2,107
Accumulated Other Comprehensive Loss (Income)
Equity, beginning balance	(18)	(21)	(22)	(14)
Comprehensive income (loss)	(1)	3	(6)	(8)
Equity, ending balance	(19)	(18)	(27)	(22)
Accumulated Deficit
Equity, beginning balance	(3,482)	(3,431)	(3,478)	(3,477)
Comprehensive income (loss)	(38)	(51)	(326)	(1)
Equity, ending balance	(3,520)	(3,482)	(3,804)	(3,478)
Noncontrolling Interest
Equity, beginning balance	93	92	80	82
Comprehensive income (loss)	11	11	7	15
Distributions to noncontrolling interests	(19)	(11)	(5)	(17)
Contributions from noncontrolling interests	1	1
Noncontrolling interest in acquired entity			2
Equity, ending balance	$ 86	$ 93	$ 84	$ 80