Restructuring Charge - Restructuring Reserve and Utilization (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Rollforward]
Balance at beginning of period	$ 8.0	$ 9.7
Charge taken during the period	3.1	4.4
Payments made during period	(4.0)	(3.3)
Balance at end of period	7.1	10.8
Severance and termination
Restructuring Reserve [Rollforward]
Balance at beginning of period	4.7	2.6
Charge taken during the period	2.5	4.7
Payments made during period	(3.4)	(2.4)
Balance at end of period	3.8	4.9
Contract termination and other exit costs
Restructuring Reserve [Rollforward]
Balance at beginning of period	3.3	7.1
Charge taken during the period	0.6	(0.3)
Payments made during period	(0.6)	(0.9)
Balance at end of period	$ 3.3	$ 5.9