CREDIT AGREEMENT AND RELATED INSTRUMENTS (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 30, 2014	Dec. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Line of Credit Facility [Line Items]
Maximum amount allowed to be requested for a loan or revolving credit facility			$ 300,000,000.0
Payments of debt extinguishment costs	(700,000)		(89,462,000)	(277,539,000)	(470,296,000)
Proceeds from Issuance of Debt		150,000,000.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.375%
Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative Liabilities, Noncurrent				(400,000)
Derivative Instruments, Gain Recognized in Income			(600,000)	(1,300,000)
Derivatives, current liabilities				(300,000)
Derivative, Gain on Derivative			600,000	1,300,000
Interest Rate Swap | Group 2
Line of Credit Facility [Line Items]
Notional amount			24,000,000
Fixed rate			2.21%
Term Loan Facility And Incremental Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Borrowed under term loan facility			698,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowed under term loan facility			0
Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Borrowed under term loan facility			0
Term Loan
Line of Credit Facility [Line Items]
Borrowed under term loan facility			646,375,000
Fair value outstanding term loan			693,000,000	674,300,000
Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Borrowed under term loan facility			51,651,000
Minimum
Line of Credit Facility [Line Items]
Excess Cash Flow Percentage			0.00%
Consolidated Leverage Ratio			1.00
Maximum
Line of Credit Facility [Line Items]
Excess Cash Flow Percentage			50.00%
Consolidated Leverage Ratio			3.00
Letter of Credit
Line of Credit Facility [Line Items]
Debt Instrument Fronting Fee Percentage			0.25%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Face amount			$ 50,000,000.0
Base Rate | Revolving Loans And Swingline [Member] | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			3.25%
Base Rate | Term Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			1.50%
Base Rate | Incremental Term Loan Facility | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			1.75%
Eurodollar Rate | Revolving Loans And Swingline [Member] | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			4.25%
Eurodollar Rate | Term Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.50%
Eurodollar Rate | Incremental Term Loan Facility | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.75%
Eurodollar Rate | Maximum | Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.00%
Eurodollar Rate | Maximum | Term Loan
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.75%
Eurodollar Rate | Maximum | Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.75%
Current | Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			0.00%
Current | Term Loan
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			3.25%
Current | Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			3.50%