Future Minimum Rental Commitments Under Non-Cancelable Long-Term Operating Leases And Capital Lease (Details) $ in Millions	Dec. 31, 2017 USD ($)
Operating lease
2018	$ 19.5
2019	16.1
2020	12.9
2021	8.4
2022	7.3
2023 and thereafter	8.1
Total future minimum lease commitments	72.3
Financing leases
2018	6.0
2019	6.1
2020	6.1
2021	6.1
2022	6.1
2023 and thereafter	61.6
Total future minimum lease commitments	92.0
Total
2018	25.5
2019	22.2
2020	19.0
2021	14.5
2022	13.4
2023 and thereafter	69.7
Total future minimum lease commitments	$ 164.3