Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions		Total	Accelerated Share Repurchase Program	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Accelerated Share Repurchase Program	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common	Treasury Stock, Common Accelerated Share Repurchase Program	Parent [Member]	Parent [Member] Accelerated Share Repurchase Program	Noncontrolling Interest [Member]
Common Stock, Shares, Issued				(111.2)					(0.1)
Total stockholders' equity		$ 2,016.0		$ 1.1	$ 0.0		$ 1,769.4	$ (30.9)	$ (0.8)		$ 1,738.8		$ 277.2
Net income		181.8					182.0				182.0		(0.2)
Other comprehensive income (loss):		15.1						13.9			13.9		1.2
Dividends, Common Stock, Cash	[1]	(84.3)					(84.3)				(84.3)
Distributions to noncontrolling interest		(11.2)											(11.2)
Stock-based compensation expense		20.7			20.7						20.7
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures				(1.2)					(0.5)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		9.7			(4.3)		0.5		$ 13.5		9.7
Treasury Stock, Shares, Acquired									(25.2)	(3.3)
Treasury Stock, Value, Acquired, Cost Method		(706.6)	$ (125.0)			$ 25.0			$ (706.6)	$ (100.0)	(706.6)	$ (125.0)
Treasury Stock, Shares, Retired				29.1					29.1
Treasury Stock, Retired, Cost Method, Amount		$ 0.0		$ (0.3)	0.0		(820.0)		$ (820.3)		0.0
Common Stock, Dividends, Per Share, Declared		$ 0.86
$0.01 Par Value		$ 0.01
Common Stock, Shares, Issued				(83.3)					0.0
Total stockholders' equity		$ 1,296.8		$ 0.8	0.0		1,046.6	(17.0)	$ (0.6)		1,029.8		267.0
Net income		72.9					60.1				60.1		12.8
Other comprehensive income (loss):		36.4						36.7			36.7		(0.3)
Dividends, Common Stock, Cash	[1]	(78.9)					(78.9)				(78.9)
Distributions to noncontrolling interest		(22.3)											(22.3)
Stock-based compensation expense		22.5			22.5						22.5
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures				(0.9)					(0.3)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		6.0			(1.1)		0.0		$ 7.1		6.0
Treasury Stock, Shares, Acquired									(2.0)	(0.8)
Treasury Stock, Value, Acquired, Cost Method		(51.8)	$ 0.0			$ (25.0)			$ (51.8)	$ (25.0)	(51.8)	$ 0.0
Treasury Stock, Shares, Retired				3.1					3.1
Treasury Stock, Retired, Cost Method, Amount		$ 0.0			(48.6)		(35.2)		$ (83.8)		0.0
Common Stock, Dividends, Per Share, Declared		$ 0.95
$0.01 Par Value		$ 0.01
Common Stock, Shares, Issued				(81.1)					(0.0)
Total stockholders' equity		$ 1,269.6		$ 0.8	0.0		992.6	19.7	$ (0.7)		1,012.4		257.2
Net income		126.6					106.0				106.0		20.6
Other comprehensive income (loss):		(15.7)						(8.7)			(8.7)		(7.0)
Dividends, Common Stock, Cash	[1]	(88.1)					(88.1)				(88.1)
Distributions to noncontrolling interest		(32.4)											(32.4)
Stock-based compensation expense		22.7			22.7						22.7
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures				(1.0)					(0.3)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		7.2			(0.7)				$ 7.9		7.2
Treasury Stock, Shares, Retired				0.3					0.3
Treasury Stock, Retired, Cost Method, Amount		$ 0.0			(8.0)				$ (8.0)		0.0
Common Stock, Dividends, Per Share, Declared		$ 1.06
$0.01 Par Value		$ 0.01
Common Stock, Shares, Issued				(81.8)					0.0
Total stockholders' equity		$ 1,275.5		$ 0.8	$ 15.4		$ 1,010.5	$ 11.0	$ (0.6)		$ 1,037.1		$ 238.4

[1] Dividends of $1.06, $0.95, and $0.86 per common share for the years ended December 31, 2023, 2022, and 2021, respectively.