CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at Dec. 31, 2023	$ 1,249.7	$ 1.3	$ 1,311.6	$ (1,487.7)	$ 1,627.9	$ (203.2)	$ (0.2)
Balance, shares at Dec. 31, 2023		45,777,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	26.2				26.2
Other comprehensive income (loss)	(45.0)					(45.0)
Stock issued under employee stock plans	0.2		0.7	(0.5)
Stock issued under employee stock plans, shares		90,812
Share-based compensation	12.5		12.5
Balance at Mar. 31, 2024	1,243.6	$ 1.3	1,324.8	(1,488.2)	1,654.1	(248.2)	(0.2)
Balance, shares at Mar. 31, 2024		45,868,774
Balance at Dec. 31, 2023	1,249.7	$ 1.3	1,311.6	(1,487.7)	1,627.9	(203.2)	(0.2)
Balance, shares at Dec. 31, 2023		45,777,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	109.4
Balance at Jun. 30, 2024	1,213.6	$ 1.3	1,336.9	(1,603.5)	1,737.3	(258.3)	(0.1)
Balance, shares at Jun. 30, 2024		44,907,350
Balance at Mar. 31, 2024	1,243.6	$ 1.3	1,324.8	(1,488.2)	1,654.1	(248.2)	(0.2)
Balance, shares at Mar. 31, 2024		45,868,774
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	83.2				83.1		0.1
Other comprehensive income (loss)	(10.0)				0.1	(10.1)
Stock issued under employee stock plans	0.5		1.9	(1.4)
Stock issued under employee stock plans, shares		38,576
Share-based compensation	10.2		10.2
Repurchase of shares	(113.9)			(113.9)
Repurchase of shares, shares		(1,000,000)
Balance at Jun. 30, 2024	1,213.6	$ 1.3	1,336.9	(1,603.5)	1,737.3	(258.3)	(0.1)
Balance, shares at Jun. 30, 2024		44,907,350
Balance at Dec. 31, 2024	1,229.2	$ 1.3	1,370.1	(1,755.2)	1,934.0	(321.5)	0.5
Balance, shares at Dec. 31, 2024		43,727,615
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	38.4				38.4
Other comprehensive income (loss)	84.0					85.0	(1.0)
Stock issued under employee stock plans	$ (1.5)		0.8	(2.3)
Stock issued under employee stock plans, shares	108,333
Share-based compensation	$ 11.2		11.2
Repurchase of shares	(59.6)			(59.6)
Repurchase of shares, shares		(591,258)
Balance at Mar. 31, 2025	1,301.7	$ 1.3	1,382.1	(1,817.1)	1,972.4	(236.5)	(0.5)
Balance, shares at Mar. 31, 2025		43,244,690
Balance at Dec. 31, 2024	1,229.2	$ 1.3	1,370.1	(1,755.2)	1,934.0	(321.5)	0.5
Balance, shares at Dec. 31, 2024		43,727,615
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	136.1
Balance at Jun. 30, 2025	1,363.4	$ 1.3	1,397.6	(2,066.6)	2,070.0	(50.6)	11.7
Balance, shares at Jun. 30, 2025		40,996,071
Balance at Mar. 31, 2025	1,301.7	$ 1.3	1,382.1	(1,817.1)	1,972.4	(236.5)	(0.5)
Balance, shares at Mar. 31, 2025		43,244,690
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	97.7				97.6		0.1
Other comprehensive income (loss)	186.0					185.9	0.1
Stock issued under employee stock plans	1.6		1.5	(0.1)
Stock issued under employee stock plans, shares		38,433
Share-based compensation			14.0
Acquisition	12.0						12.0
Repurchase of shares	(249.6)			(249.6)
Repurchase of shares, shares		(2,287,052)
Balance at Jun. 30, 2025	$ 1,363.4	$ 1.3	$ 1,397.6	$ (2,066.6)	$ 2,070.0	$ (50.6)	$ 11.7
Balance, shares at Jun. 30, 2025		40,996,071