Debt, Commitments And Contingencies (Narrative) (Detail) (USD $)	0 Months Ended	3 Months Ended
	Nov. 21, 2012	Mar. 29, 2013	Dec. 28, 2012
Debt Instrument [Line Items]
Revolving loan facility term	5 years
Term loan facility term	5 years
Total debt		$ 920,439,000	$ 911,158,000
Non-current portion of long-term debt		829,322,000	873,066,000
Ratio of total indebtedness to EBITDA		The 2012 Credit Facility contains various customary representations and warranties by the Company, which include customary use of materiality, material adverse effect and knowledge qualifiers. The 2012 Credit Facility also contains customary affirmative and negative covenants including, among other requirements, negative covenants that restrict the Company's ability to dispose of assets, create liens, incur indebtedness, repurchase stock, pay dividends, make acquisitions and make investments. Further, the 2012 Credit Facility contains financial covenants that require the maintenance of minimum interest coverage and maximum leverage ratios. Specifically, the Company must maintain as of the end of each fiscal quarter a ratio of (a) EBITDA (as defined in the 2012 Credit Facility) to (b) interest expenses for the most recently ended period of four fiscal quarters of not less than 3.5 to 1. The Company must also maintain, at the end of each fiscal quarter, a ratio of (x) total indebtedness to (y) EBITDA (as defined in the 2012 Credit Facility) for the most recently ended period of four fiscal quarters of not greater than the applicable ratio set forth in the table below; provided, that on the completion of a material acquisition, the Company may increase the applicable ratio in the table below by 0.25 for the fiscal quarter during which such acquisition occurred and each of the three subsequent fiscal quarters.
Restrictive covenants		The Company was in compliance with these restrictive covenants as of the first quarter of fiscal 2013.
Unconditional purchase obligations		103,800,000
Minimum
Debt Instrument [Line Items]
Credit facility commitment fee, percentage		0.15%
Maximum
Debt Instrument [Line Items]
Credit facility commitment fee, percentage		0.35%
Term Loan [Member]
Debt Instrument [Line Items]
Aggregate availability of revolving credit line	700,000,000
Total debt		691,250,000	700,000,000
Non-current portion of long-term debt		656,000,000
2012 Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Non Current Portion, Interest Rate at Period End		1.89%	1.96%
Aggregate availability of revolving credit line	1,400,000,000
Increase in available revolving credit line	300,000,000
Unsecured revolving credit facility, initiation date	Nov. 21, 2012
Total debt		173,000,000
Amortization of credit facility percentage year one		5.00%
Amortization of credit facility percentage year two		5.00%
Amortization of credit facility percentage year three		10.00%
Amortization of credit facility percentage year four		10.00%
Amortization of credit facility percentage year five		70.00%
2011 Uncommitted Facility [Member]
Debt Instrument [Line Items]
Line of credit facility uncommitted fee amount		75,000,000
Credit facility interest rate in addition to specific base rates		1.00%
Total debt		53,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Aggregate availability of revolving credit line	700,000,000
Total debt		226,000,000	208,000,000
Non-current portion of long-term debt		173,000,000
Payment Of Borrowings Bearing Interest At A Fixed Rate		3
Covenant Ratio Increase upon acquisition		0.25
Unsecured revolving credit facility, expiration date		Nov. 21, 2017
Revolving Credit Facility [Member] | Minimum | Floating Per Annum Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate in addition to specific base rates		0.00%
Revolving Credit Facility [Member] | Minimum | Reserve-Adjusted Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate in addition to specific base rates		1.00%
Revolving Credit Facility [Member] | Maximum
Debt Instrument [Line Items]
Maximum leverage and minimum interest coverage ratio		3.5
Revolving Credit Facility [Member] | Maximum | Floating Per Annum Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate in addition to specific base rates		1.00%
Revolving Credit Facility [Member] | Maximum | Reserve-Adjusted Rate [Member]
Debt Instrument [Line Items]
Credit facility interest rate in addition to specific base rates		2.00%
Two Thousand Twelve Credit Facility & Two Thousand Eleven Uncommitted Facility [Member]
Debt Instrument [Line Items]
Short-term Debt, Weighted Average Interest Rate		1.66%	1.96%
Promissory Notes And Other Debt [Member]
Debt Instrument [Line Items]
Total debt		3,189,000	3,158,000
Non-current portion of long-term debt		$ 100,000	$ 100,000