Condensed Consolidated and Combined Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Former Parent’s Net Investment	Former Parent’s Net Investment Cumulative Effect, Period of Adoption, Adjustment	Additional Paid-in Capital	Retained Earnings/(Accumulated Deficit)	Retained Earnings/(Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income/(Loss)
Beginning balance, shares (in shares) at Dec. 31, 2017			0
Balance as of beginning of period, value at Dec. 31, 2017	$ 1,262	$ (15)	$ 0	$ 0	$ 1,257	$ (15)	$ 0	$ 0		$ 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss)/income	162				43			119
Other comprehensive income (loss)	(13)									(13)
Net transfer to and net contribution from former Parent	222				222
Dividends	(75)				(25)
Dividends, Common Stock								(50)
Other					(1,482)		1,482
Issuance of common stock (in shares)			100
Issuance of common stock	1		$ 1
Stock Repurchased During Period, Shares			(2)
Net share settlement of incentive equity awards	(34)						(34)
Repurchase of common stock	(119)			(119)
Change in deferred compensation	26						26
Other	1						1
Ending balance, shares (in shares) at Dec. 31, 2018			98
Balance as of end of period, value at Dec. 31, 2018	1,418		$ 1	(119)	0		1,475	69		(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss)/income	157							157
Other comprehensive income (loss)	(19)									(19)
Dividends	(113)
Dividends, Common Stock	$ (19)							(113)
Stock Repurchased During Period, Shares	(4)
Net share settlement of incentive equity awards	$ (5)						(5)
Repurchase of common stock	(244)			(244)
Change in deferred compensation	20						20
Other	(2)						(2)
Ending balance, shares (in shares) at Dec. 31, 2019			94
Balance as of end of period, value at Dec. 31, 2019	1,212	$ (10)	$ 1	(363)	0		1,488	113	$ (10)	(27)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss)/income	(132)							(132)
Other comprehensive income (loss)	(25)									(25)
Dividends, Common Stock	$ (53)							(53)
Stock Repurchased During Period, Shares	(1)
Net share settlement of incentive equity awards	$ (4)						(4)
Repurchase of common stock	(45)			(45)
Change in deferred compensation	21						21
Other	(1)						(1)
Ending balance, shares (in shares) at Dec. 31, 2020			93
Balance as of end of period, value at Dec. 31, 2020	$ 963		$ 1	$ (408)	$ 0		$ 1,504	$ (82)		$ (52)