Statement of Shareholders Equity Statement - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Common Stock, Shares, Outstanding		153.0
Common Stock, Amount, Outstanding		$ 153.0
Treasury Stock, Shares			8.0
Treasury Stock, amount			$ (178.0)
Additional paid-in capital				$ 471.0
Retained earnings					$ 1,280.0
Accumulated comprehensive loss						$ (122.0)
Total stockholders' equity	$ 1,605.0
Effect of adoptions of ASU 2018-02 and 2014-09 | Accounting Standards Update 2014-09 [Member]	(4.0)				(4.0)
Effect of adoptions of ASU 2018-02 and 2014-09 | Accounting Standards Update 2018-02 [Member]	0.0				17.0	(17.0)
Net income	91.0				91.0
Dividends paid	(19.0)				(19.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	6.0		$ 4.0	10.0
Compensation expense associated with stock-based compensation	2.0			2.0
Other comprehensive income	4.0					4.0
Net income	378.0
Common Stock, Shares, Outstanding		153.0
Common Stock, Amount, Outstanding		$ 153.0
Treasury Stock, Shares			8.0
Treasury Stock, amount			$ (173.0)
Additional paid-in capital				463.0
Retained earnings					1,364.0
Accumulated comprehensive loss						(135.0)
Total stockholders' equity	1,672.0
Net income	163.0				163.0
Dividends paid	(19.0)				(19.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	2.0		$ 6.0	8.0
Purchase of treasury stock			1.0
Purchase of treasury stock	(39.0)		$ (39.0)
Compensation expense associated with stock-based compensation	3.0			3.0
Other comprehensive income	(12.0)					(12.0)
Common Stock, Shares, Outstanding		153.0
Common Stock, Amount, Outstanding		$ 153.0
Treasury Stock, Shares			9.0
Treasury Stock, amount			$ (206.0)
Additional paid-in capital				458.0
Retained earnings					1,508.0
Accumulated comprehensive loss						(147.0)
Total stockholders' equity	1,766.0
Net income	124.0				124.0
Dividends paid	(19.0)				(19.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	2.0		$ 2.0	3.0
Purchase of treasury stock			2.0
Purchase of treasury stock			$ (60.0)
Compensation expense associated with stock-based compensation	2.0			2.0
Other comprehensive income	(1.0)					(1.0)
Common Stock, Shares, Outstanding		153.0
Common Stock, Amount, Outstanding		$ 153.0
Treasury Stock, Shares			12.0
Treasury Stock, amount			$ (264.0)
Additional paid-in capital				457.0
Retained earnings					1,614.0
Accumulated comprehensive loss	(148.0)					(148.0)
Total stockholders' equity	1,811.0
Common Stock, Shares, Outstanding		153.0
Common Stock, Amount, Outstanding		$ 153.0
Treasury Stock, Shares			17.0
Treasury Stock, amount	378.0		$ (378.0)
Additional paid-in capital	458.0			458.0
Retained earnings	1,613.0				1,613.0
Accumulated comprehensive loss	(146.0)					(146.0)
Total stockholders' equity	1,700.0
Net income	27.0				27.0
Dividends paid	(17.0)				(17.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	4.0		$ 4.0	8.0
Purchase and retirement of stock		12.0
Purchase and retirement of stock, amount		$ 12.0
Purchase of treasury stock			2.0
Purchase of treasury stock	(438.0)		$ (38.0)
Compensation expense associated with stock-based compensation	2.0			2.0
Purchase of stock, ASR adjustment				(80.0)	(308.0)
Other comprehensive income	2.0					2.0
Net income	46.0
Common Stock, Shares, Outstanding		141.0
Common Stock, Amount, Outstanding		$ 141.0
Treasury Stock, Shares			18.0
Treasury Stock, amount			$ (412.0)
Additional paid-in capital				373.0
Retained earnings					1,314.0
Accumulated comprehensive loss						(144.0)
Total stockholders' equity	1,273.0
Net income	17.0				17.0
Dividends paid	(17.0)				(17.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	1.0		$ 2.0	1.0
Compensation expense associated with stock-based compensation	2.0			2.0
Other comprehensive income	2.0					2.0
Common Stock, Shares, Outstanding		141.0
Common Stock, Amount, Outstanding		$ 141.0
Treasury Stock, Shares			18.0
Treasury Stock, amount			$ (410.0)
Additional paid-in capital				374.0
Retained earnings					1,315.0
Accumulated comprehensive loss						(143.0)
Total stockholders' equity	1,278.0
Net income	2.0				2.0
Dividends paid	(16.0)				(16.0)
Issuance of shares under stock plans			0.0
Issuance of shares under stock plans, amount	1.0		$ 2.0	3.0
Purchase and retirement of stock		6.0
Purchase and retirement of stock, amount		$ 6.0
Purchase of treasury stock	(42.0)
Compensation expense associated with stock-based compensation	2.0			2.0
Purchase of stock, ASR adjustment				80.0	(116.0)
Other comprehensive income						(9.0)
Common Stock, Shares, Outstanding		135.0
Common Stock, Amount, Outstanding		$ 135.0
Treasury Stock, Shares			18.0
Treasury Stock, amount	408.0		$ (408.0)
Additional paid-in capital	453.0			$ 453.0
Retained earnings	1,185.0				$ 1,185.0
Accumulated comprehensive loss	(152.0)					$ (152.0)
Total stockholders' equity	$ 1,213.0