Restructuring Activities - Restructuring Accrual, Spending and Other Activity and Accrual Balance Remaining (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Reserve [Roll Forward]
Restructuring accrual at beginning of period			$ 14.7
Headcount accrual and accrual adjustments			9.2
Restructuring charges	$ 9.8	$ 0.6	9.2	$ 4.6
Cash payments during period			(12.5)
Effect of changes in foreign currency exchange rates			(0.2)
Restructuring accrual at end of period	22.4		22.4
Lease contract terminations	93.8		93.8
Contract Terminations Excluding Leases
Restructuring Reserve [Roll Forward]
Restructuring charges			11.2
Contract Termination
Restructuring Reserve [Roll Forward]
Restructuring charges	15.3		15.3
Lease contract terminations	$ 4.0		$ 4.0