CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ (DEFICIT) EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interest in Subsidiaries
Balance at beginning of period (in shares) at Dec. 31, 2020		283.8
Balance at beginning of period (in shares) at Dec. 31, 2020			78.9
Balance at beginning of period at Dec. 31, 2020	$ 504.6	$ 2.8	$ (2,096.8)	$ 617.5	$ 2,045.6	$ (65.5)	$ 1.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	448.7				448.7
Net income attributable to non-controlling interests	0.2						0.2
Purchase of remaining interest in subsidiary	(4.6)			(3.4)			(1.2)
Foreign currency adjustments, net of tax	(34.0)					(34.0)
Exercise of stock options (in shares)			(0.9)
Exercise of stock options	14.4		$ 25.0	(10.6)
Dividends declared on common stock	(47.3)				(47.3)
Issuances of PRSUs, RSUs, and DSUs (in shares)			(1.6)
Issuances of PRSUs, RSUs, and DSUs	0.0		$ 41.8	(41.8)
Treasury stock repurchased (in shares)			14.1
Treasury stock repurchased	(551.4)		$ (551.4)
Treasury stock repurchased - PRSU/RSU releases (in shares)			0.5
Treasury stock repurchased - PRSU/RSU releases	(14.4)		$ (14.4)
Amortization of unearned stock-based compensation	46.3			46.3
Balance at end of period (in shares) at Sep. 30, 2021		283.8
Balance at ending of period (in shares) at Sep. 30, 2021			91.0
Balance at end of period at Sep. 30, 2021	362.5	$ 2.8	$ (2,595.8)	608.0	2,447.0	(99.5)	0.0
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2020	8.9
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to non-controlling interests	(0.4)
Redeemable noncontrolling interest, ending balance at Sep. 30, 2021	8.5
Balance at beginning of period (in shares) at Jun. 30, 2021		283.8
Balance at beginning of period (in shares) at Jun. 30, 2021			87.3
Balance at beginning of period at Jun. 30, 2021	401.6	$ 2.8	$ (2,416.6)	597.1	2,287.9	(69.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	177.4				177.4
Foreign currency adjustments, net of tax	(29.9)					(29.9)
Exercise of stock options (in shares)			(0.4)
Exercise of stock options	5.9		$ 10.7	(4.8)
Dividends declared on common stock	(18.3)				(18.3)
Issuances of PRSUs, RSUs, and DSUs	0.0		$ 0.4	(0.4)
Treasury stock repurchased (in shares)			4.1
Treasury stock repurchased	(190.0)		$ (190.0)
Treasury stock repurchased - PRSU/RSU releases	(0.3)		$ (0.3)
Amortization of unearned stock-based compensation	16.1			16.1
Balance at end of period (in shares) at Sep. 30, 2021		283.8
Balance at ending of period (in shares) at Sep. 30, 2021			91.0
Balance at end of period at Sep. 30, 2021	362.5	$ 2.8	$ (2,595.8)	608.0	2,447.0	(99.5)	$ 0.0
Redeemable noncontrolling interest, beginning balance at Jun. 30, 2021	8.5
Redeemable noncontrolling interest, ending balance at Sep. 30, 2021	8.5
Balance at beginning of period (in shares) at Dec. 31, 2021		283.8
Balance at beginning of period (in shares) at Dec. 31, 2021			96.4
Balance at beginning of period at Dec. 31, 2021	285.8	$ 2.8	$ (2,844.7)	622.0	2,604.9	(99.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	354.0				354.0
Foreign currency adjustments, net of tax	(140.1)					(140.1)
Exercise of stock options	0.3		$ 0.7	(0.4)
Dividends declared on common stock	(54.5)				(54.5)
Issuances of PRSUs, RSUs, and DSUs (in shares)			(2.6)
Issuances of PRSUs, RSUs, and DSUs	0.0		$ 75.4	(75.4)
Treasury stock repurchased (in shares)			17.6
Treasury stock repurchased	(591.2)		$ (591.2)
Treasury stock repurchased - PRSU/RSU releases (in shares)			1.0
Treasury stock repurchased - PRSU/RSU releases	(46.0)		$ (46.0)
Amortization of unearned stock-based compensation	39.1			39.1
Balance at end of period (in shares) at Sep. 30, 2022		283.8
Balance at ending of period (in shares) at Sep. 30, 2022			112.4
Balance at end of period at Sep. 30, 2022	(152.6)	$ 2.8	$ (3,405.8)	585.3	2,904.4	(239.3)
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2021	9.2
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to non-controlling interests	1.3
Dividend paid to non-controlling interest in subsidiary	(1.2)
Redeemable noncontrolling interest, ending balance at Sep. 30, 2022	9.3
Balance at beginning of period (in shares) at Jun. 30, 2022		283.8
Balance at beginning of period (in shares) at Jun. 30, 2022			111.4
Balance at beginning of period at Jun. 30, 2022	(189.9)	$ 2.8	$ (3,381.3)	573.6	2,789.5	(174.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	132.7				132.7
Foreign currency adjustments, net of tax	(64.8)					(64.8)
Exercise of stock options	0.1		0.3	(0.2)
Dividends declared on common stock	(17.8)				(17.8)
Issuances of PRSUs, RSUs, and DSUs	0.0		$ 0.4	(0.4)
Treasury stock repurchased (in shares)			1.0
Treasury stock repurchased	(25.0)		$ (25.0)
Treasury stock repurchased - PRSU/RSU releases	(0.2)		$ (0.2)
Amortization of unearned stock-based compensation	12.3			12.3
Balance at end of period (in shares) at Sep. 30, 2022		283.8
Balance at ending of period (in shares) at Sep. 30, 2022			112.4
Balance at end of period at Sep. 30, 2022	(152.6)	$ 2.8	$ (3,405.8)	$ 585.3	$ 2,904.4	$ (239.3)
Redeemable noncontrolling interest, beginning balance at Jun. 30, 2022	9.0
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income attributable to non-controlling interests	0.5
Dividend paid to non-controlling interest in subsidiary	(0.2)
Redeemable noncontrolling interest, ending balance at Sep. 30, 2022	$ 9.3