CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect Period of Adoption Adjusted Balance	Common Shares ($1 par value)	Common Shares ($1 par value) Cumulative Effect Period of Adoption Adjusted Balance	Paid-In Capital	Paid-In Capital Cumulative Effect Period of Adoption Adjusted Balance	Retained (Deficit) Earnings	Retained (Deficit) Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained (Deficit) Earnings Cumulative Effect Period of Adoption Adjusted Balance	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Cumulative Effect Period of Adoption Adjusted Balance	Noncontrolling Interest	Noncontrolling Interest Cumulative Effect Period of Adoption Adjusted Balance
Beginning balance at Dec. 31, 2018	$ 69			$ 294		$ 0		$ (278)			$ (127)		$ 180
Increase (Decrease) in Stockholders' Equity
Total comprehensive income (loss)	924							935			(52)		41
Shares issued	15			3		12		0
Shares retired:
Repurchased	(896)			(20)		(42)		(834)
Surrendered (non-cash)	(10)			(1)				(9)
Cash dividends declared	(146)							(146)
Dividends paid to noncontrolling interest	(42)												(42)
Redeemable noncontrolling interest - redemption adjustment	0
Stock-based compensation	30					30
Ending balance at Dec. 31, 2019	$ (56)	$ (1)	$ (57)	276	$ 276	0	$ 0	(332)	$ (1)	$ (333)	(179)	$ (179)	179	$ 179
Shares retired:
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Total comprehensive income (loss)	$ 1,331							1,224			37		70
Shares issued	14			2		12
Repurchased	(727)			(19)		(53)		(655)
Surrendered (non-cash)	(14)			(1)				(13)
Cash dividends declared	(144)							(144)
Dividends paid to noncontrolling interest	(23)												(23)
Redeemable noncontrolling interest - redemption adjustment	0
Stock-based compensation	41					41
Ending balance at Dec. 31, 2020	421			258		0		79			(142)		226
Increase (Decrease) in Stockholders' Equity
Total comprehensive income (loss)	837
Total comprehensive income	836							410			374		52
Shares issued	3			1		2
Shares retired:
Repurchased	(1,026)			(18)		(57)		(951)
Surrendered (non-cash)	(13)			0				(13)
Cash dividends declared	(175)							(175)
Dividends paid to noncontrolling interest	(43)												(43)
Redeemable noncontrolling interest - redemption adjustment	(2)							(2)
Stock-based compensation	55					55
Ending balance at Dec. 31, 2021	$ 56			$ 241		$ 0		$ (652)			$ 232		$ 235