Long-Term Debt Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Long-Term Debt Narrative [Line Items]
Long-term Debt, Weighted Average Interest Rate	6.40%		6.40%
Revolving Credit Facility [Member]
Long-Term Debt Narrative [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 523.5
Line of Credit Facility, Remaining Borrowing Capacity	513.1
Line of Credit Facility, Amount Outstanding	0.0		$ 0.0
Term Facility [Member]
Long-Term Debt Narrative [Line Items]
Debt Instrument, Periodic Payment, Principal	6.6	$ 5.6
Foreign Credit Facilities [Member]
Long-Term Debt Narrative [Line Items]
Line of Credit Facility, Amount Outstanding	36.8		$ 38.9
Debt Instrument, Unused Borrowing Capacity, Amount	45.4
Class D [Member] | Revolving Credit Facility [Member]
Long-Term Debt Narrative [Line Items]
Line of Credit Facility, Standby Letters of Credit Issued Against the Facility	$ 10.4