Leases - Remaining Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Leases
2020	$ 43.7
2021	35.6
2022	29.0
2023	22.9
2024	16.3
Thereafter	50.1
Total remaining lease payments (undiscounted)	197.6
Less: imputed interest	37.2
Present value of lease liabilities	160.3
Finance Leases
2020	4.8
2021	3.8
2022	3.5
2023	2.8
2024	1.8
Thereafter	3.8
Total remaining lease payments (undiscounted)	20.4
Less: imputed interest	1.7
Present value of lease liabilities	$ 18.7
Operating Leases, Before Adoption of 842
2019		$ 50.7
2020		37.1
2021		30.7
2022		23.7
2023		17.8
Thereafter		48.5
Total future minimum lease payments		$ 208.6