Leases - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lease Cost
Operating lease costs (1)	$ 18.5	$ 17.8	$ 35.9	$ 35.5
Short-term lease costs (2)	8.6	11.0	17.3	20.5
Sublease income	0.0	(1.9)	(0.1)	(3.8)
Net lease costs	27.1	26.9	53.1	52.2
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	(18.5)	(17.9)	(35.9)	(36.2)
Leased assets obtained in exchange for new operating lease liabilities	9.8	6.8	11.3	14.2
Leased assets obtained in exchange for new financing lease liabilities	$ 0.0	$ 0.2	$ 0.0	$ 12.4
Weighted-average remaining lease term (years) operating leases	4 years 4 months 24 days	4 years 10 months 24 days	4 years 4 months 24 days	4 years 10 months 24 days
Weighted-average remaining lease term (years) financing leases	6 years 4 months 24 days	7 years 6 months	6 years 4 months 24 days	7 years 6 months
Weighted-average discount rate operating leases (3)	6.00%	6.40%	6.00%	6.40%
Weighted-average discount rate financing leases (3)	3.30%	3.30%	3.30%	3.30%