Components of Current and Long-Term Debt (Detail) - USD ($) $ in Thousands		Sep. 29, 2018	Dec. 30, 2017
Debt Instrument
Total Debt		$ 1,782,250	$ 1,865,000
Less: Current Portion		57,750	82,750
Unamortized Deferred Financing Costs		9,903	11,205
Unamortized Debt Discount		27,133	30,433
Total Long-Term Debt		$ 1,687,464	$ 1,740,612
Effective Interest Rate	[1]	7.55%	4.96%
Former Tranche B-2 Term Facility due April 2, 2020
Debt Instrument
Total Debt		$ 0	$ 0
Unamortized Deferred Financing Costs		0	0
Unamortized Debt Discount		$ 0	$ 0
Effective Interest Rate	[1]	0.00%	4.76%
New Term Loan due November 29, 2024
Debt Instrument
Total Debt		$ 1,482,250	$ 1,540,000
Unamortized Deferred Financing Costs		8,658	9,783
Unamortized Debt Discount		$ 27,133	$ 30,433
Effective Interest Rate	[1]	7.36%	6.84%
Notes due December 1, 2025
Debt Instrument
Total Debt		$ 300,000	$ 300,000
Unamortized Deferred Financing Costs		1,245	1,422
Unamortized Debt Discount		$ 0	$ 0
Effective Interest Rate	[1]	8.59%	8.82%
New Revolving Credit Facility due November 29, 2022
Debt Instrument
Total Debt		$ 0	$ 25,000
Unamortized Deferred Financing Costs		0	0
Unamortized Debt Discount		$ 0	$ 0
Effective Interest Rate	[1]	4.34%	4.15%

[1] Includes amortization of deferred financing costs and debt discount. For fiscal 2017, the effective interest rate for the tranche B-2 term facility of the Company’s then-existing term loan facility was computed based on interest expense incurred over the period for which borrowings were outstanding.