CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Capital Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance, beginning of period at Dec. 31, 2021		$ 18.7	$ 163.6	$ 981.8	$ (45.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of shares withheld for taxes		0.1	(10.9)
Equity compensation expense			11.8
Shares repurchased	$ (25.0)	(0.2)	(24.8)
Other additional paid-in capital activity			1.0
Net income	116.6			116.6
Other comprehensive income (loss)	(40.0)				(40.0)
Balance, end of period at Dec. 31, 2022	1,172.5	18.6	140.7	1,098.4	(85.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of shares withheld for taxes			(3.2)
Equity compensation expense			14.3
Net income	56.6			56.6
Other comprehensive income (loss)	18.8				18.8
Balance, end of period at Dec. 31, 2023	1,259.0	18.6	151.8	1,155.0	(66.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of shares withheld for taxes		0.1	(1.5)
Shares issued for employee stock purchase plan			1.5
Equity compensation expense			15.1
Shares repurchased	(19.8)	(0.2)	(19.6)
Net income	26.1			26.1
Other comprehensive income (loss)	(28.9)				(28.9)
Balance, end of period at Dec. 31, 2024	$ 1,251.6	$ 18.5	$ 147.3	$ 1,181.1	$ (95.3)