Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2023		57.8
Beginning balance at Dec. 31, 2023	$ 649.3	$ 0.1	$ (227.7)	$ 904.4	$ (5.7)	$ (21.8)
Beginning balance (in shares) at Dec. 31, 2023			(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	9.0					9.0
Share-based compensation activity (in shares)		0.2
Share-based compensation activity	5.4			5.4
Other comprehensive income (loss), net of tax	0.2				0.2
Ending balance (in shares) at Mar. 31, 2024		58.0
Ending balance at Mar. 31, 2024	663.9	$ 0.1	$ (227.7)	909.8	(5.5)	(12.8)
Ending balance (in shares) at Mar. 31, 2024			(5.6)
Beginning balance (in shares) at Dec. 31, 2023		57.8
Beginning balance at Dec. 31, 2023	649.3	$ 0.1	$ (227.7)	904.4	(5.7)	(21.8)
Beginning balance (in shares) at Dec. 31, 2023			(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(159.3)
Other comprehensive income (loss), net of tax	(1.6)
Ending balance (in shares) at Sep. 30, 2024		59.7
Ending balance at Sep. 30, 2024	508.4	$ 0.1	$ (227.7)	924.4	(7.3)	(181.1)
Ending balance (in shares) at Sep. 30, 2024			(5.6)
Beginning balance (in shares) at Mar. 31, 2024		58.0
Beginning balance at Mar. 31, 2024	663.9	$ 0.1	$ (227.7)	909.8	(5.5)	(12.8)
Beginning balance (in shares) at Mar. 31, 2024			(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(283.1)					(283.1)
Share-based compensation activity (in shares)		0.5
Share-based compensation activity	5.5			5.5
Ending balance (in shares) at Jun. 30, 2024		58.5
Ending balance at Jun. 30, 2024	386.3	$ 0.1	$ (227.7)	915.3	(5.5)	(295.9)
Ending balance (in shares) at Jun. 30, 2024			(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	114.8					114.8
Share-based compensation activity (in shares)		0.1
Share-based compensation activity	1.4			1.4
Issuance of common stock (in shares)		1.1
Issuance of common stock	7.7			7.7
Other comprehensive income (loss), net of tax	(1.8)				(1.8)
Ending balance (in shares) at Sep. 30, 2024		59.7
Ending balance at Sep. 30, 2024	$ 508.4	$ 0.1	$ (227.7)	924.4	(7.3)	(181.1)
Ending balance (in shares) at Sep. 30, 2024			(5.6)
Beginning balance (in shares) at Dec. 31, 2024	59.9	59.9
Beginning balance at Dec. 31, 2024	$ 482.8	$ 0.1	$ (227.7)	928.0	(5.2)	(212.4)
Beginning balance (in shares) at Dec. 31, 2024	(5.6)		(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 68.0					68.0
Share-based compensation activity (in shares)		0.2
Share-based compensation activity	2.8			2.8
Other comprehensive income (loss), net of tax	(0.9)				(0.9)
Ending balance (in shares) at Mar. 31, 2025		60.1
Ending balance at Mar. 31, 2025	$ 552.7	$ 0.1	$ (227.7)	930.8	(6.1)	(144.4)
Ending balance (in shares) at Mar. 31, 2025			(5.6)
Beginning balance (in shares) at Dec. 31, 2024	59.9	59.9
Beginning balance at Dec. 31, 2024	$ 482.8	$ 0.1	$ (227.7)	928.0	(5.2)	(212.4)
Beginning balance (in shares) at Dec. 31, 2024	(5.6)		(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 107.2
Other comprehensive income (loss), net of tax	$ (2.3)
Ending balance (in shares) at Sep. 30, 2025	60.6	60.6
Ending balance at Sep. 30, 2025	$ 582.5	$ 0.1	$ (243.5)	938.6	(7.5)	(105.2)
Ending balance (in shares) at Sep. 30, 2025	(7.9)		(7.9)
Beginning balance (in shares) at Mar. 31, 2025		60.1
Beginning balance at Mar. 31, 2025	$ 552.7	$ 0.1	$ (227.7)	930.8	(6.1)	(144.4)
Beginning balance (in shares) at Mar. 31, 2025			(5.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(12.0)					(12.0)
Share-based compensation activity (in shares)		0.3
Share-based compensation activity	4.4			4.4
Repurchases of common stock (in shares)			(1.1)
Repurchases of common stock	(6.9)		$ (6.9)
Other comprehensive income (loss), net of tax	(2.0)				(2.0)
Ending balance (in shares) at Jun. 30, 2025		60.4
Ending balance at Jun. 30, 2025	536.2	$ 0.1	$ (234.6)	935.2	(8.1)	(156.4)
Ending balance (in shares) at Jun. 30, 2025			(6.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	51.2					51.2
Share-based compensation activity (in shares)		0.2
Share-based compensation activity	3.4			3.4
Repurchases of common stock (in shares)			(1.2)
Repurchases of common stock	(8.9)		$ (8.9)
Other comprehensive income (loss), net of tax	$ 0.6				0.6
Ending balance (in shares) at Sep. 30, 2025	60.6	60.6
Ending balance at Sep. 30, 2025	$ 582.5	$ 0.1	$ (243.5)	$ 938.6	$ (7.5)	$ (105.2)
Ending balance (in shares) at Sep. 30, 2025	(7.9)		(7.9)