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Leases Schedule of Finance Lease Liability Maturities (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Leases [Abstract]  
Remainder of 2019 $ 1.2
2020 2.4
2021 2.1
2022 1.8
2023 1.2
2024 and Thereafter 0.2
Total undiscounted lease payments 8.9
Present value adjustment (1.0)
Finance lease liabilities $ 7.9