CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning Balance (in shares) at Dec. 31, 2022		92.2
Beginning Balance at Dec. 31, 2022	$ 2,424.5	$ 0.9	$ 1,285.4	$ 1,410.8	$ (276.9)	$ 4.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(38.2)			(38.3)		0.1
Currency translation adjustments	14.0				16.3	(2.3)
Cumulative currency translation loss realized from divestitures (Note 4)	69.6				69.6
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares (in shares)		0.3
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares	(3.4)		(3.4)
Stock-based compensation expense	17.8		17.8
Changes in noncontrolling interest	(1.5)					(1.5)
Ending Balance (in shares) at Jun. 30, 2023		92.5
Ending Balance at Jun. 30, 2023	2,482.8	$ 0.9	1,299.8	1,372.5	(191.0)	0.6
Beginning Balance (in shares) at Mar. 31, 2023		92.4
Beginning Balance at Mar. 31, 2023	2,446.0	$ 0.9	1,289.2	1,422.0	(266.7)	0.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(49.5)			(49.5)
Currency translation adjustments	6.1				6.1
Cumulative currency translation loss realized from divestitures (Note 4)	69.6				69.6
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares (in shares)		0.1
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares	(0.3)		(0.3)
Stock-based compensation expense	10.9		10.9
Ending Balance (in shares) at Jun. 30, 2023		92.5
Ending Balance at Jun. 30, 2023	2,482.8	$ 0.9	1,299.8	1,372.5	(191.0)	0.6
Beginning Balance (in shares) at Dec. 31, 2023		92.6
Beginning Balance at Dec. 31, 2023	2,522.9	$ 0.9	1,316.7	1,389.4	(184.5)	0.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	19.1			19.1
Currency translation adjustments	(13.1)				(13.1)
Cumulative currency translation loss realized from divestitures (Note 4)	0.0
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares (in shares)		0.2
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares	(4.0)		(4.0)
Stock-based compensation expense	7.6		7.6
Ending Balance (in shares) at Jun. 30, 2024		92.8
Ending Balance at Jun. 30, 2024	2,532.5	$ 0.9	1,320.3	1,408.5	(197.6)	0.4
Beginning Balance (in shares) at Mar. 31, 2024		92.8
Beginning Balance at Mar. 31, 2024	2,523.1	$ 0.9	1,315.3	1,402.5	(196.0)	0.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	6.0			6.0
Currency translation adjustments	(1.6)				(1.6)
Cumulative currency translation loss realized from divestitures (Note 4)	0.0
Issuance of common stock for incentive stock programs, net of (payments of) taxes from withheld shares	0.0
Stock-based compensation expense	5.0		5.0
Ending Balance (in shares) at Jun. 30, 2024		92.8
Ending Balance at Jun. 30, 2024	$ 2,532.5	$ 0.9	$ 1,320.3	$ 1,408.5	$ (197.6)	$ 0.4