CONSOLIDATED AND COMBINED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (986.2)	$ (328.5)	$ (25.2)
Foreign currency translation adjustments	112.2	(69.3)	59.3
Net benefit plan adjustments	1.7	1.1	1.2
Unrealized (loss) gain on derivative instruments	(0.7)	1.4	(1.9)
Other comprehensive income (loss) before tax	113.2	(66.8)	58.6
(Provision) benefit for income tax related to items of comprehensive income	(0.3)	(0.6)	0.7
Other comprehensive income (loss), net of tax	112.9	(67.4)	59.3
Comprehensive (loss) income	$ (873.3)	$ (395.9)	$ 34.1