Leases - Maturities of lease liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 60.8
2021	48.4
2022	38.6
2023	29.0
2024	18.1
Thereafter	30.7
Total lease payments	225.6
Less imputed interest	(19.3)
Operating Lease, Liability	206.3
Finance Leases
2020	12.5
2021	12.6
2022	12.2
2023	12.4
2024	12.4
Thereafter	158.2
Total lease payments	220.3
Less imputed interest	(86.1)
Total	$ 134.2