Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended		8 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 10, 2016	Sep. 10, 2016	Sep. 30, 2017	Dec. 31, 2016
Accounts Receivables [Abstract]
Sale of accounts receivable, maximum amount under agreement	$ 200.0			$ 200.0
Sale of accounts receivable percent paid at sale	90.00%			90.00%
Accounts receivable sold	$ 134.5	$ 138.2	$ 437.1	$ 432.5
Fee charged on sale of accounts receivable	0.5	0.3	1.1	1.5
Accounts receivable, reduction due to sale	$ 72.8	$ 78.5	$ 78.5	$ 72.8	$ 81.1