Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Capital in Excess of Par Value	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Non-Controlling Interest
Balance at Dec. 31, 2017	$ 2,519	$ (3)	$ 2	$ 1,912	$ 1,227	$ 14	$ (210)	$ (17)	$ (428)	$ 16
Stockholders' Equity [Roll Forward]
Net income	549				549
Other comprehensive loss, net	(111)						(109)
Dividends declared	(151)				(151)
Stock incentive plan activity	29			38					(9)
Repurchase of common stock	(50)								(50)
Balance at Dec. 31, 2018	2,782		2	1,950	1,639		(336)		(487)	14
Stockholders' Equity [Roll Forward]
Net income	401				401
Other comprehensive loss, net	(38)						(39)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(3)									(3)
Dividends declared	(174)				(174)
Stock incentive plan activity	26			41					(15)
Noncontrolling Interest, Decrease from Deconsolidation	(2)									(2)
Repurchase of common stock	(25)								(25)
Balance at Dec. 31, 2019	2,967	$ (2)	2	1,991	1,866	$ (2)	(375)		(527)	10
Stockholders' Equity [Roll Forward]
Net income	254				254
Other comprehensive loss, net	(39)						(38)			(1)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1)									(1)
Dividends declared	(188)				(188)
Stock incentive plan activity	35			46					(11)
Repurchase of common stock	(50)								(50)
Balance at Dec. 31, 2020	$ 2,976		$ 2	$ 2,037	$ 1,930		$ (413)		$ (588)	$ 8