Consolidated 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 income (loss)	$ 47.0	$ (1,118.6)	$ (100.2)
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	256.4	(151.4)	16.8
Pension plan adjustments	1.5	(2.5)	(8.9)
Total other comprehensive income (loss), net of income taxes	257.9	(153.9)	7.9
Comprehensive income (loss)	$ 304.9	$ (1,272.5)	$ (92.3)