Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ 2,273.0
Change in component	$ 33.8	$ (7.6)	(5.0)
Reclassification adjustments into earnings	(0.5)	(0.5)	3.3
Income tax effect	0.1	0.3	1.5
Ending balance	2,436.7
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(184.8)	(177.4)	(167.6)
Ending balance	(150.6)	(184.8)	(177.4)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(128.3)	(120.7)	(106.3)
Change in component	33.8	(7.6)	(14.4)
Reclassification adjustments into earnings	0.0	0.0	0.0
Income tax effect	0.0	0.0	0.0
Ending balance	(94.5)	(128.3)	(120.7)
Unrealized Loss on Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(9.6)	(9.8)	(9.9)
Change in component	0.0	0.0	3.4
Reclassification adjustments into earnings	0.4	0.4	(3.3)
Income tax effect	0.0	0.2	0.0
Ending balance	(9.2)	(9.6)	(9.8)
Post-Retirement Benefit Plans Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	46.9	46.9	51.4
Change in component	0.0	0.0	6.0
Reclassification adjustments into earnings	0.1	0.1	0.0
Income tax effect	(0.1)	(0.1)	(1.5)
Ending balance	$ 46.9	$ 46.9	$ 46.9