Leases - Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating leases:
Remainder of 2020	$ 75.4
2021	89.8
2022	74.6
2023	66.3
2024	56.1
After 2024	126.5
Total Lease Payments	488.7
Imputed Interest	(59.1)
Lease Liabilities	429.6
Finance leases:
Remainder of 2020	4.6
2021	5.1
2022	4.1
2023	3.4
2024	3.1
After 2024	85.9
Total Lease Payments	106.2
Imputed Interest	(57.6)
Lease Liabilities	$ 48.6