CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning Balance at Dec. 31, 2023	$ 80.7	$ 0.0	$ 49.7	$ 87.2	$ (56.2)	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	101.7			101.7
Other comprehensive income (loss), net	(10.8)				(10.8)
Share-based awards	6.5		6.5
Ending Balance at Jun. 30, 2024	178.1	0.0	56.2	188.9	(67.0)	0.0
Beginning Balance at Mar. 31, 2024	121.8	0.0	52.1	132.7	(63.0)	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	56.2			56.2
Other comprehensive income (loss), net	(4.0)				(4.0)
Share-based awards	4.1		4.1
Ending Balance at Jun. 30, 2024	178.1	0.0	56.2	188.9	(67.0)	0.0
Beginning Balance at Dec. 31, 2024	227.4	0.0	61.9	264.5	(79.0)	(20.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	104.6			104.6
Other comprehensive income (loss), net	17.7				17.7
Share-based awards	5.3		5.3
Common stock repurchased	(30.4)					(30.4)
Cash dividends declared	(8.3)			(8.3)
Ending Balance at Jun. 30, 2025	316.3	0.0	67.2	360.8	(61.3)	(50.4)
Beginning Balance at Mar. 31, 2025	265.3	0.0	64.2	305.1	(74.0)	(30.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	59.9			59.9
Other comprehensive income (loss), net	12.7				12.7
Share-based awards	3.0		3.0
Common stock repurchased	(20.4)					(20.4)
Cash dividends declared	(4.2)			(4.2)
Ending Balance at Jun. 30, 2025	$ 316.3	$ 0.0	$ 67.2	$ 360.8	$ (61.3)	$ (50.4)