Consolidated Statement of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		135.5
Beginning balance at Dec. 31, 2022	$ 1,603.3	$ 1.4	$ 3,518.1	$ (1,763.8)	$ (152.4)
Shareholders' Equity (Deficit) [Roll Forward]
Net income	230.1			230.1
Equity-based compensation expense	20.8		20.8
Stock option exercises (in shares)		0.5
Stock option exercises	12.8		12.8
Coworker Stock Purchase Plan	5.0		5.0
Repurchases of common stock (in shares)		(1.0)
Repurchases of common stock	(200.0)			(200.0)
Dividends paid	(79.9)		0.6	(80.5)
Incentive compensation plan stock withheld for taxes	(31.6)			(31.6)
Unrealized gain on cash flow hedge	0.0
Foreign currency translation and other	8.4			(1.2)	9.6
Ending balance (in shares) at Mar. 31, 2023		135.0
Ending balance at Mar. 31, 2023	1,568.9	$ 1.4	3,557.3	(1,847.0)	(142.8)
Beginning balance (in shares) at Dec. 31, 2023		134.1
Beginning balance at Dec. 31, 2023	2,042.5	$ 1.3	3,691.3	(1,525.5)	(124.6)
Shareholders' Equity (Deficit) [Roll Forward]
Net income	216.1			216.1
Equity-based compensation expense	19.4		19.4
Stock option exercises (in shares)		0.5
Stock option exercises	28.9		28.9
Coworker Stock Purchase Plan	4.9		4.9
Repurchases of common stock (in shares)		(0.2)
Repurchases of common stock	(52.1)			(52.1)
Dividends paid	(83.3)		0.5	(83.8)
Incentive compensation plan stock withheld for taxes	(29.9)			(29.9)
Unrealized gain on cash flow hedge	1.8				1.8
Foreign currency translation and other	(9.6)			1.0	(10.6)
Ending balance (in shares) at Mar. 31, 2024		134.4
Ending balance at Mar. 31, 2024	$ 2,138.7	$ 1.3	$ 3,745.0	$ (1,474.2)	$ (133.4)