Stockholders' Deficit - Schedule of Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Equity, beginning balance	$ (1,656)	$ (1,312)	$ (1,290)	$ (1,616)	$ (1,595)	$ (1,538)
Redeemable Noncontrolling Interests, beginning balance			480
Comprehensive income (loss)	(35)	(324)	6	125	14	(59)
Distributions to noncontrolling interests	(12)	(5)	(17)	(10)	(14)	(9)
Purchases of subsidiary shares from noncontrolling interests	(1)		(1)	9
Contributions from noncontrolling interests	8
Other reclassifications of noncontrolling interests					(1)
Noncontrolling interest in acquired entity		2
Adjustment to redemption value of redeemable noncontrolling interests	(4)	(20)	(7)	(6)	(25)	7
Cancellation of restricted stock for tax withholdings on vested shares			(8)			(4)
Share-based compensation	6	3	5	5	5	8
Equity, ending balance	(1,694)	(1,656)	(1,312)	(1,493)	(1,616)	(1,595)
Redeemable Noncontrolling Interests, ending balance	516
Redeemable Noncontrolling Interests (Non- Equity)
Redeemable Noncontrolling Interests, beginning balance	498	493	480	498	481	484
Comprehensive income (loss)	30	21
Comprehensive income (loss) attributable to redeemable noncontrolling interest			16	20	24	21
Distributions to noncontrolling interests	(20)	(39)
Distributions to redeemable noncontrolling interests			(12)	(19)	(31)	(12)
Dispositions of less-than-wholly owned business						(7)
Purchases of subsidiary shares from noncontrolling interests	(1)		1	(13)	(2)
Contributions from noncontrolling interests	1		1	1
Other reclassifications of redeemable noncontrolling interests					1
Noncontrolling interest in acquired entity	4	3				2
Adjustment to redemption value of redeemable noncontrolling interests	4	20	7	6	25	(7)
Redeemable Noncontrolling Interests, ending balance	516	498	493	493	498	481
Common Stock
Equity, beginning balance	1	1	1	1	1	1
Equity, ending balance	1	1	1	1	1	1
Additional Paid-in Capital
Equity, beginning balance	2,090	2,107	2,118	2,084	2,105	2,094
Purchases of subsidiary shares from noncontrolling interests	(1)		(1)	9
Other reclassifications of noncontrolling interests					(1)
Adjustment to redemption value of redeemable noncontrolling interests	(4)	(20)	(7)	(6)	(25)	7
Cancellation of restricted stock for tax withholdings on vested shares			(8)			(4)
Share-based compensation	6	3	5	5	5	8
Equity, ending balance	2,091	2,090	2,107	2,092	2,084	2,105
Accumulated Other Comprehensive (Income) Loss
Equity, beginning balance	(27)	(22)	(14)	(15)	(16)	(13)
Comprehensive income (loss)	(6)	(6)	(8)	1	1	(3)
Equity, ending balance	(33)	(27)	(22)	(14)	(15)	(16)
Accumulated Deficit
Equity, beginning balance	(3,804)	(3,478)	(3,477)	(3,765)	(3,771)	(3,707)
Comprehensive income (loss)	(41)	(326)	(1)	110	6	(64)
Equity, ending balance	(3,845)	(3,804)	(3,478)	(3,655)	(3,765)	(3,771)
Noncontrolling Interest
Equity, beginning balance	84	80	82	79	86	87
Comprehensive income (loss)	12	7	15	14	7	8
Distributions to noncontrolling interests	(12)	(5)	(17)	(10)	(14)	(9)
Contributions from noncontrolling interests	8
Noncontrolling interest in acquired entity		2
Equity, ending balance	$ 92	$ 84	$ 80	$ 83	$ 79	$ 86