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Leases - Schedule of Operating Expense and Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Leases [Abstract]    
Operating lease expense $ 13.2  
Variable lease expense 2.8  
Short-term lease expense 2.2  
Total lease expense 18.2  
Right-of-use assets 122.1  
Current portion of lease liabilities 38.7 $ 0.0
Non-current portion of lease liabilities 100.6  
Total lease liabilities $ 139.3