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Other Comprehensive Income (Loss) - Schedule of Changes in Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-tax	$ (12.6)	$ 1.8	$ (13.9)	$ (7.7)
Tax	0.3	6.6	1.0	5.3
Other comprehensive income (loss)	(12.3)	8.4	(12.9)	(2.4)
Pension and OPEB liability adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-tax	(8.3)	(0.1)	(8.3)	0.3
Tax	0.0	0.3	0.1	0.2
Other comprehensive income (loss)	(8.3)	0.2	(8.2)	0.5
Derivative instrument adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-tax	(3.3)	(17.0)	(15.1)	(15.7)
Tax	0.0	3.5	0.0	1.9
Other comprehensive income (loss)	(3.3)	(13.5)	(15.1)	(13.8)
Unrealized foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-tax	(1.0)	18.9	9.5	7.7
Tax	0.3	2.8	0.9	3.2
Other comprehensive income (loss)	$ (0.7)	$ 21.7	$ 10.4	$ 10.9

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