Leases - Supplemental Income Statement Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating lease cost:
Operating lease cost	$ 4.7	$ 6.0
Short-term lease cost	6.3	3.4
Variable lease cost	1.6	0.5
Sublease income	(0.4)	(0.5)
Total operating lease cost	12.2	9.4
Finance lease cost:
Amortization of right-of-use assets	1.5	0.6
Interest on lease liabilities	0.6	0.5
Total finance lease cost	$ 2.1	$ 1.1