Leases - Contractual Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 66.6
2021	63.9
2022	46.3
2023	33.9
2024	28.3
Later years	111.8
Total lease payments	350.8
Less: Interest	(42.9)
Operating lease	307.9
Finance Leases
2020	0.5
2021	0.5
2022	0.5
2023	0.5
2024	3.7
Later years	0.5
Total lease payments	6.2
Less: Interest	(0.9)
Finance lease	$ 5.3