Restructuring - Summary of Activity Relating to Restructuring Plan Liabilities (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	18 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Mar. 31, 2024
2024 Plan
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 6.2
Restructuring costs	0.7	6.8		7.5
Costs paid or otherwise settled	(2.1)	(0.6)
Ending balance	$ 4.8	6.2		4.8
2022 Plan
Restructuring Cost and Reserve [Line Items]
Beginning balance		0.1	1.2	$ 0.1
Restructuring costs		0.0	0.1		7.4
Costs paid or otherwise settled		$ (0.1)	(1.2)
Ending balance			$ 0.1		$ 0.1