Stockholders' Deficit - Schedule of Stockholders' Deficit (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Equity, beginning balance	$ (1,290)	$ (1,538)
Redeemable Noncontrolling Interests, beginning balance	480
Comprehensive income (loss)	6	(59)
Distributions to noncontrolling interests	(17)	(9)
Purchases of subsidiary shares from noncontrolling interests	(1)
Adjustment to redemption value of redeemable noncontrolling interests	(7)	7
Cancellation of restricted stock for tax withholdings on vested shares	(8)	(4)
Share-based compensation	5	8
Equity, ending balance	(1,312)	(1,595)
Redeemable Noncontrolling Interests, ending balance	493
Redeemable Noncontrolling Interests (Non- Equity)
Redeemable Noncontrolling Interests, beginning balance	480	484
Comprehensive income (loss) attributable to redeemable noncontrolling interest	16	21
Distributions to redeemable noncontrolling interests	(12)	(12)
Purchases of subsidiary shares from noncontrolling interests	1
Contributions from noncontrolling interests	1
Adjustment to redemption value of redeemable noncontrolling interests	7	(7)
Redeemable Noncontrolling Interests, ending balance	493	481
Dispositions of less-than-wholly owned business		(7)
Noncontrolling interest in acquired entity		2
Common Stock
Equity, beginning balance	1	1
Equity, ending balance	1	1
Additional Paid-in Capital
Equity, beginning balance	2,118	2,094
Purchases of subsidiary shares from noncontrolling interests	(1)
Adjustment to redemption value of redeemable noncontrolling interests	(7)	7
Cancellation of restricted stock for tax withholdings on vested shares	(8)	(4)
Share-based compensation	5	8
Equity, ending balance	2,107	2,105
Accumulated Other Comprehensive (Income) Loss
Equity, beginning balance	(14)	(13)
Comprehensive income (loss)	(8)	(3)
Equity, ending balance	(22)	(16)
Accumulated Deficit
Equity, beginning balance	(3,477)	(3,707)
Comprehensive income (loss)	(1)	(64)
Equity, ending balance	(3,478)	(3,771)
Noncontrolling Interest
Equity, beginning balance	82	87
Comprehensive income (loss)	15	8
Distributions to noncontrolling interests	(17)	(9)
Equity, ending balance	$ 80	$ 86