Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Operating leases
2021	$ 22.6
2022	15.0
2023	10.6
2024	7.3
2025	5.6
Thereafter	10.9
Total	72.0
Less: Imputed interest	(3.7)
Total lease liabilities	$ 68.3
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current
Operating Lease, Liability, Statement of Financial Position [Extensible List]		us-gaap:OperatingLeaseRightOfUseAsset
Finance leases
2021	$ 1.2
2022	1.0
2023	0.8
2024	0.4
2025	0.1
Total	3.5
Less: imputed interest	(0.1)
Total lease liabilities	$ 3.4