Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	$ 787.0
Balance at end of period	617.1
Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(0.7)
Other comprehensive (loss) income before reclassifications, net of tax	1.2
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(0.6)
Balance at end of period	(0.1)
Foreign Currency Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(349.8)
Other comprehensive (loss) income before reclassifications, net of tax	(36.5)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.0
Balance at end of period	(386.3)
Unrecognized Pension and Other Post-retirement Benefit Costs
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(175.8)
Other comprehensive (loss) income before reclassifications, net of tax	0.8
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	5.5
Balance at end of period	(169.5)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(526.3)
Other comprehensive (loss) income before reclassifications, net of tax	(34.5)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	4.9
Balance at end of period	$ (555.9)