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Leases - Schedule of Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows for operating leases $ 13.8  
Operating cash flows for finance leases 0.1  
Financing cash flows for finance leases 0.6 $ 0.0
ROU assets obtained in exchange for lease obligations:    
Operating leases 11.6  
Finance leases $ 0.5