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Leases - Other Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Supplemental disclosures of cash flow information:  
Cash payments for finance leases included in cash flows from financing activities $ 0.4
Cash payments for operating leases included in cash flows from operating activities 7.0
Right-of-use assets obtained in exchange for operating lease liabilities $ 80.6
Other lease information  
Weighted-average remaining lease term - Finance leases 6 months
Weighted-average remaining lease term - Operating leases 11 years 7 months
Weighted-average discount rate - Finance leases 9.30%
Weighted-average discount rate - Operating leases 5.20%