Leases - Annual Future Maturities of Leases (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	$ 37.2
2021	27.4
2022	20.2
2023	15.0
2024	11.9
After 2024	41.5
Total lease payments	153.2
Less: Interest	19.5
Present value of lease liabilities	133.7	$ 164.0
Finance Lease, Liability, Payment, Due [Abstract]
2020	4.1
2021	5.4
2022	2.7
2023	1.7
2024	1.3
After 2024	14.2
Total lease payments	29.4
Less: Interest	4.9
Present value of lease liabilities	24.5
Lease Liabilities, Payments, Due [Abstract]
2020	41.3
2021	32.8
2022	22.9
2023	16.7
2024	13.2
After 2024	55.7
Total lease payments	182.6
Less: Interest	24.4
Present value of lease liabilities	$ 158.2