Long-term Debt Revolver (Details) (Revolving Credit Facility [Member])	Dec. 31, 2014 USD ($)	May 27, 2014 USD ($)	Oct. 02, 2012 USD ($)	Dec. 31, 2014 Line of Credit [Member] USD ($)	Dec. 31, 2014 Swingline Credit Facility [Member] USD ($)	Dec. 31, 2014 Swingline Credit Facility [Member] AUD	May 27, 2014 Swingline Credit Facility [Member] USD ($)	Dec. 31, 2014 United States Revolving Loan [Member] USD ($)	Dec. 31, 2014 Canadian Revolving Loan [Member] USD ($)	Dec. 31, 2014 Canadian Revolving Loan [Member] CAD	Dec. 31, 2014 European Revolving Loan [Member] USD ($)	Dec. 31, 2014 European Revolving Loan [Member] EUR (€)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 625,000,000	$ 425,000,000				$ 50,000,000
Long-term debt	43,200,000				6,500,000	8,000,000		11,000,000	20,700,000	24,000,000	5,000,000	4,100,000
Letters of Credit Outstanding, Amount				2,600,000
Debt Instrument, Unused Borrowing Capacity, Amount	$ 579,200,000
Debt instrument, interest rate, stated percentage					6.44%	6.44%		1.67%	2.79%	2.79%	1.51%	1.51%