Leases - Maturities of Lease Liabilities (Details) $ in Millions	Mar. 31, 2020 USD ($)
Operating leases:
Remainder of 2020	$ 50.8
2021	93.3
2022	77.8
2023	68.6
2024	59.1
After 2024	146.8
Total Lease Payments	496.4
Imputed Interest	(58.1)
Lease Liabilities	438.3
Finance leases:
Remainder of 2020	3.1
2021	5.1
2022	4.0
2023	3.4
2024	3.1
After 2024	85.9
Total Lease Payments	104.6
Imputed Interest	(57.0)
Lease Liabilities	$ 47.6