Other Comprehensive Loss - AOCI (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization or settlement of actuarial losses and prior service costs	$ 0.2	$ 0.2	$ 0.1	$ 0.3
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax	(0.1)	0.0	(0.2)	0.0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax	0.3	0.2	0.3	0.3
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(0.5)	0.4	0.5	1.6
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	0.1	(0.1)	(0.1)	(0.3)
Net (gains) losses reclassified into earnings	(0.4)	0.3	0.4	1.3
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			(138.1)	(129.8)
Other comprehensive earnings, net of tax	6.6	(4.0)	9.3	(7.6)
Ending balance	(128.8)	(137.4)	(128.8)	(137.4)
AOCI, Derivative Qualifying as Hedge, Excluded Component, after Tax	0.8	(2.0)	0.8	(2.0)	$ (2.1)	$ (0.7)
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax	(16.6)	(15.9)	(16.6)	(15.9)	(16.9)	(16.2)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (113.0)	$ (119.5)	(113.0)	(119.5)	$ (119.1)	$ (112.9)
Employee benefit plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive earnings, net of tax			0.3	0.3
Cumulative foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive earnings, net of tax			6.1	(6.6)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive earnings, net of tax			$ 2.9	$ (1.3)

Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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