Accumulated Other Comprehensive Income (Loss) - Changes in Company’s AOCI, Net of Tax, by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	$ 1,025.7	$ 1,079.2	$ (1,473.6)	$ (1,371.1)
Beginning balance	1,009.0	1,025.7	(2,130.6)	(1,473.6)
Other comprehensive (loss) income before reclassifications within the translation component, amount excluded	0.2	0.0	6.6	(2.2)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	(30.4)	7.6	(353.7)	(360.0)
Other comprehensive income (loss) before reclassifications	(35.8)	(43.0)	25.4	5.0
Amounts reclassified from AOCI	1.9	5.0	0.8	1.3
Net current-period other comprehensive income (loss)	(33.9)	(38.0)	26.2	6.3
Beginning balance	(64.3)	(30.4)	(327.5)	(353.7)
Translation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	(28.8)	14.2	(347.4)	(352.1)
Other comprehensive income (loss) before reclassifications	(35.2)	(43.0)	25.2	4.7
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Net current-period other comprehensive income (loss)	(35.2)	(43.0)	25.2	4.7
Beginning balance	(64.0)	(28.8)	(322.2)	(347.4)
Hedges | Foreign exchange forward contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	(0.1)	(0.1)	(1.9)	(1.9)
Other comprehensive income (loss) before reclassifications	(0.3)	0.0	0.0	0.0
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Net current-period other comprehensive income (loss)	(0.3)	0.0	0.0	0.0
Beginning balance	(0.4)	(0.1)	(1.9)	(1.9)
Hedges | Interest rate swap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	0.0	0.0	5.6	5.3
Other comprehensive income (loss) before reclassifications	(0.3)	0.0	0.2	0.3
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Net current-period other comprehensive income (loss)	(0.3)	0.0	0.2	0.3
Beginning balance	(0.3)	0.0	5.8	5.6
Pension and Other Post-retirement Benefits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	(1.1)	(6.1)	(11.3)	(12.6)
Other comprehensive income (loss) before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from AOCI	1.9	5.0	0.8	1.3
Net current-period other comprehensive income (loss)	1.9	5.0	0.8	1.3
Beginning balance	0.8	(1.1)	(10.5)	(11.3)
Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Ending balance	(0.4)	(0.4)	1.3	1.3
Other comprehensive income (loss) before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Net current-period other comprehensive income (loss)	0.0	0.0	0.0	0.0
Beginning balance	$ (0.4)	$ (0.4)	$ 1.3	$ 1.3