Sale of Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Sale of Receivables [Abstract]
Sale of receivables to financial institutions	$ 693.6	$ 690.3
Charge related to sale of receivables	$ 14.3	$ 13.1	$ 13.9