Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 31, 2023	$ 3,997.3	$ 0.9	$ 620.1	$ 3,447.2	$ (70.9)
Beginning Balance (in shares) at Dec. 31, 2023		89,625
Common stock withheld and retired to cover taxes on vested stock awards	(22.5)		(1.1)	(21.4)
Common stock withheld and retired to cover taxes on vested stock awards (in shares)		(127)
Common stock dividends declared	(113.1)			(113.1)
Share-based compensation and other	21.5		21.5
Share-based compensation and other (in shares)		306
Comprehensive income	147.8			146.9	0.9
Ending Balance at Mar. 31, 2024	4,031.0	$ 0.9	640.5	3,459.6	(70.0)
Ending Balance (in shares) at Mar. 31, 2024		89,804
Beginning Balance at Dec. 31, 2024	4,404.0	$ 0.9	669.8	3,776.7	(43.4)
Beginning Balance (in shares) at Dec. 31, 2024		89,802
Common stock withheld and retired to cover taxes on vested stock awards	(15.4)		(0.7)	(14.7)
Common stock withheld and retired to cover taxes on vested stock awards (in shares)		(74)
Common stock dividends declared	(113.0)			(113.0)
Share-based compensation and other	18.7		18.7
Share-based compensation and other (in shares)		200
Comprehensive income	204.9			203.8	1.1
Ending Balance at Mar. 31, 2025	$ 4,499.2	$ 0.9	$ 687.8	$ 3,852.8	$ (42.3)
Ending Balance (in shares) at Mar. 31, 2025		89,928