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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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The effective interest rate at the end of the reporting period.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt (Schedule of Long-term Debt) (Details) $ in Millions	3 Months Ended
Debt (Schedule of Long-term Debt) (Details) $ in Millions	Mar. 30, 2019 USD ($)	Mar. 30, 2019 CAD ($)	Mar. 30, 2019 EUR (€)	Dec. 29, 2018 USD ($)	May 02, 2018 EUR (€)	Jan. 02, 2014 USD ($)
Debt Instrument [Line Items]
Debt and Capital Lease Obligations	$ 1,687,456,000			$ 1,674,432,000
Current portion of long-term debt	23,693,000			7,492,000
Long-term debt, net of current portion	1,663,763,000			1,666,940,000
Capital lease obligation included in current and long-term debt	366,000	$ 0.4	€ 100,000	415,000
Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	60,714,000			67,699,000
Long-term Debt, Gross	61,030,000			68,080,000
Unamortized Debt Issuance Expense	(316,000)			(381,000)
Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	486,259,000			485,976,000
Long-term Debt, Gross	495,000,000			495,000,000
Unamortized Debt Issuance Expense	(8,741,000)			(9,024,000)
Senior Notes [Member] \| Senior Notes 5.375% Due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt	495,497,000			495,124,000
Long-term Debt, Gross	500,000,000			500,000,000
Unamortized Debt Issuance Expense	$ (4,503,000)			(4,876,000)
Stated interest rate	5.375%	5.375%	5.375%			5.375%
Debt instrument, interest rate, effective percentage	5.72%	5.72%	5.72%
Face amount of debt instrument						$ 500,000,000
Senior Notes [Member] \| Senior Notes 3.625% Due 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 570,618,000			582,339,000
Long-term Debt, Gross	578,371,000			590,499,000
Unamortized Debt Issuance Expense	$ (7,753,000)			(8,160,000)
Line of credit outstanding \| €			€ 515,000,000
Stated interest rate	3.625%	3.625%	3.625%		3.625%
Debt instrument, interest rate, effective percentage	3.83%	3.83%	3.83%
Face amount of debt instrument \| €					€ 515,000,000
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 24,307,000			11,189,000
Letter of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	23,500,000
Revolving Credit Facility [Member] \| Line of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	50,061,000			32,105,000
Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	350,000,000
Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	525,000,000
Euro Member Countries, Euro \| Revolving Credit Facility [Member] \| Line of Credit [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Long-term Debt	37,100,000			32,100,000
Canada, Dollars \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	22,800,000	$ 30.6		$ 29,800,000
U.S. dollar \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	38,300,000
U.S. dollar \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	$ 485,000,000
Canadian Dealer Offered Rate (CDOR) [Member] \| Canada, Dollars
Debt Instrument [Line Items]
Interest rate	4.0572%	4.0572%	4.0572%
Canadian Dealer Offered Rate (CDOR) [Member] \| Canada, Dollars \| Secured Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	2.00%	2.00%	2.00%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan A Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	4.50%	4.50%	4.50%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Interest rate	4.50%	4.50%	4.50%
London Interbank Offered Rate (LIBOR) [Member] \| Euro Member Countries, Euro \| Revolving Credit Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding \| €			€ 33,000,000
Base Rate [Member] \| Secured Debt [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Interest rate	6.50%	6.50%	6.50%
Base Rate [Member] \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Interest rate	6.50%	6.50%	6.50%
Base Rate [Member] \| U.S. dollar \| Revolving Credit Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	$ 13,000,000
Base Rate [Member] \| U.S. dollar \| Term Loan B Facility [Member] \| Senior Secured Facilities [Member]
Debt Instrument [Line Items]
Line of credit outstanding	$ 10,000,000