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Debt (Schedule of Long-term Debt) (Details) $ in Thousands, € in Millions, CAD in Millions	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 CAD	Sep. 30, 2017 EUR (€)	Dec. 31, 2016 USD ($)	Jun. 03, 2015	Jan. 02, 2014
Debt Instrument [Line Items]
Debt and Capital Lease Obligations	$ 1,752,391			$ 1,750,943
Current portion of long-term debt	18,215			23,247
Long-term debt, net of current portion	1,734,176			1,727,696
Capital lease obligations, current		CAD 0.9	€ 0.3
Capital lease obligations, noncurrent		CAD 0.5	€ 0.1
Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	107,239			119,020
Long-term Debt, Gross	108,053			120,103
Unamortized Debt Issuance Expense	(814)			(1,083)
Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	532,626			577,202
Long-term Debt, Gross	537,500			583,500
Unamortized Debt Issuance Expense	(4,874)			(6,298)
Senior Notes [Member] \| Senior Notes 5.375% Due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt	493,345			492,333
Long-term Debt, Gross	500,000			500,000
Unamortized Debt Issuance Expense	$ (6,655)			$ (7,667)
Stated interest rate						5.375%
Debt instrument, interest rate, effective percentage	5.72%	5.72%	5.72%	5.72%
Senior Notes [Member] \| Senior Notes 4.75% Due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 599,549			$ 534,884
Long-term Debt, Gross	608,318			543,840
Unamortized Debt Issuance Expense	$ (8,769)			$ (8,956)
Line of credit outstanding \| €			€ 515.0
Stated interest rate					4.75%
Debt instrument, interest rate, effective percentage	5.10%	5.10%	5.10%	5.10%
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 19,632			$ 22,224
Letter of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	24,000
Revolving Credit Facility [Member] \| Line of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	0			5,280
Canada, Dollars \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	64,800	CAD 80.6		76,900
Euro Member Countries, Euro \| Revolving Credit Facility [Member] \| Line of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt				$ 5,300
U.S. dollar \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	43,300
U.S. dollar \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	$ 525,500
Canadian Dealer Offered Rate (CDOR) [Member] \| Canada, Dollars \| Secured Debt [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	3.3947%	3.3947%	3.3947%
London Interbank Offered Rate (LIBOR) [Member] \| Secured Debt [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	3.24%	3.24%	3.24%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Interest rate	3.74%	3.74%	3.74%
Base Rate [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Interest rate	5.75%	5.75%	5.75%
Base Rate [Member] \| U.S. dollar \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	$ 12,000