Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Expenses (Details)

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Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Accounts Payable and Accrued Liabilities, Current [Abstract]    
Payables, trade and other $ 127.8 $ 115.8
Employment costs 23.3 16.5
Other accrued expenses 18.7 17.9
Total $ 169.8 $ 150.2