Debt (Receivables Facility) (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Securitized accounts receivable	$ 914.2	$ 1,070.0
Short-term borrowings	1.3	330.7
Receivables Facility
Short-term Debt [Line Items]
Accounts receivable securitization facility maximum borrowing capacity	400.0
Short-term borrowings	0.0	$ 325.0
Interest rate on borrowings		0.93%
Debt instrument, fee amount	$ 1.5