Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
2020	$ 12.1
2021	10.4
2022	8.6
2023	7.8
2024	7.3
Thereafter	41.8
Operating lease liability payments due	88.0
Less: imputed lease interest	16.0
Total lease liabilities	$ 72.0
2019		$ 13.0
2020		10.5
2021		7.8
2022		6.9
2023		5.5
Thereafter		37.8
Total		$ 81.5

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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