v3.10.0.1
Other Assets - Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Prepaid Expenses and Other Current Assets    
Prepaid expenses $ 72.7 $ 78.6
Inventories 52.8 51.2
Other non-trade receivables 29.2 28.6
Reinsurance receivable 26.8 23.1
Income tax receivable 8.1 59.7
Commodity and fuel hedge assets 3.4 3.0
Other current assets 2.9 3.4
Total $ 195.9 $ 247.6