Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ 2,060.3	$ 2,126.9	$ 2,234.1	$ 2,458.1
Defined benefit pension plans, net of income tax benefit
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	24.0	(8.9)
Retiree health care plan, net of income taxes
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	0.6	1.5
Foreign currency translation
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(249.7)	(342.2)
Translation loss on long-term intercompany loans, net of income taxes
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(133.6)	(133.2)
(Loss) gain on derivative instruments, net of income tax benefit
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(53.9)	39.0
Gain on interest rate swap, net of income taxes
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	0.5	0.8
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ (412.1)	$ (443.0)	$ (466.0)	$ (458.7)