Stockholders' Equity - Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net current-period other comprehensive income (loss)	$ (3.4)	$ 4.3
Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of actuarial losses of defined benefit pension plans	(0.8)	(0.7)
Total before tax	(0.8)	(0.7)
Income tax benefit	0.2	0.2
Total reclassifications for the period, net of tax	(0.6)	(0.5)
Actuarial Losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net current-period other comprehensive income (loss)	0.6	0.2
Prior Service Costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net current-period other comprehensive income (loss)	0.0	0.0
Currency Translation
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net current-period other comprehensive income (loss)	(4.0)	4.0
Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net current-period other comprehensive income (loss)	$ (3.4)	$ 4.3

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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