Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid- In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (loss)	Non Controlling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock	$ 0.6
Additional paid-in capital	983.9
Retained earnings (accumulated deficit)	218.4
Accumulated other comprehensive loss, net	(58.4)
Noncontrolling interest	0.3
Beginning balance (in shares) at Dec. 31, 2020		61.9
Beginning balance at Dec. 31, 2020	1,144.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		0.4
Employee stock compensation	49.7		$ 49.7
Deferred compensation	0.8		1.9	$ (1.1)
Proceeds from stock issuances under employee plans (in shares)		1.7
Proceeds from stock issuances under employee plans	151.7		151.7
Cash dividends declared	(115.2)			(115.2)
Repurchase and retirement of common shares (in shares)		(3.3)
Repurchase and retirement of common shares	(411.3)		(52.6)	(358.7)
Net income	407.5			407.1		$ 0.4
Contributions	1.2					1.2
Other comprehensive income (loss)	(15.5)				$ (15.5)
Ending balance (in shares) at Sep. 30, 2021		60.7
Ending balance at Sep. 30, 2021	1,213.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock	0.6
Additional paid-in capital	1,110.0
Retained earnings (accumulated deficit)	73.5
Accumulated other comprehensive loss, net	(63.5)
Noncontrolling interest	1.7
Beginning balance (in shares) at Jun. 30, 2021		60.6
Beginning balance at Jun. 30, 2021	1,122.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		0.1
Employee stock compensation	20.0		20.0
Deferred compensation	0.4		(1.0)	1.4
Proceeds from stock issuances under employee plans (in shares)		0.0
Proceeds from stock issuances under employee plans	5.6		5.6
Cash dividends declared	(38.2)			(38.2)
Repurchase and retirement of common shares (in shares)		0.0
Repurchase and retirement of common shares	(0.8)		0.0	(0.8)
Net income	114.8			114.6		0.2
Other comprehensive income (loss)	(10.4)				(10.4)
Ending balance (in shares) at Sep. 30, 2021		60.7
Ending balance at Sep. 30, 2021	1,213.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock	0.6
Additional paid-in capital	1,134.6
Retained earnings (accumulated deficit)	150.5
Accumulated other comprehensive loss, net	(73.9)
Noncontrolling interest	1.9
Common stock	0.6
Additional paid-in capital	1,143.8
Retained earnings (accumulated deficit)	157.3
Accumulated other comprehensive loss, net	(77.4)
Noncontrolling interest	2.0
Beginning balance (in shares) at Dec. 31, 2021		60.4
Beginning balance at Dec. 31, 2021	1,226.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		0.4
Employee stock compensation	44.7		44.7
Deferred compensation	(0.8)		(2.6)	1.8
Proceeds from stock issuances under employee plans (in shares)		0.4
Proceeds from stock issuances under employee plans	30.7		30.7
Cash dividends declared	(113.5)			(113.5)
Repurchase and retirement of common shares (in shares)		(3.2)
Repurchase and retirement of common shares	(378.5)		(61.1)	(317.4)
Net income	252.1			251.6		0.5
Other comprehensive income (loss)	(41.6)				(41.6)
Ending balance (in shares) at Sep. 30, 2022		58.0
Ending balance at Sep. 30, 2022	1,019.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock	0.6
Additional paid-in capital	1,161.4
Retained earnings (accumulated deficit)	3.1
Accumulated other comprehensive loss, net	(93.7)
Noncontrolling interest	2.2
Beginning balance (in shares) at Jun. 30, 2022		59.5
Beginning balance at Jun. 30, 2022	1,073.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock compensation (in shares)		0.0
Employee stock compensation	15.9		15.9
Deferred compensation	(0.6)		(1.1)	0.5
Proceeds from stock issuances under employee plans (in shares)		0.2
Proceeds from stock issuances under employee plans	12.9		12.9
Cash dividends declared	(37.5)			(37.5)
Repurchase and retirement of common shares (in shares)		(1.7)
Repurchase and retirement of common shares	(206.2)		$ (33.6)	(172.6)
Net income	186.6			$ 186.3		$ 0.3
Other comprehensive income (loss)	(25.3)				$ (25.3)
Ending balance (in shares) at Sep. 30, 2022		58.0
Ending balance at Sep. 30, 2022	1,019.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock	0.6
Additional paid-in capital	1,155.5
Retained earnings (accumulated deficit)	(20.2)
Accumulated other comprehensive loss, net	(119.0)
Noncontrolling interest	$ 2.5