INCOME TAXES - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Taxes [Line Items]
Income Tax Expense (Benefit)	$ 793,000	$ 12,389,000	$ 14,950,000
Income (loss) before income taxes	23,916,000	56,063,000	(14,725,000)
Increase in valuation allowance	(8,900,000)	13,900,000	179,300,000
Excess tax benefit from employee stock compensation	34,600,000
Estimated increase in equity from excess tax benefit	34,600,000
Tax credits that carryforward indefinitely	9,000,000
Undistributed earnings of foreign operations	430,400,000	357,400,000
Unrecognized tax benefit, interest and penalties	700,000	0	2,000,000
Unrecognized tax benefit, cumulative interest and penalties	6,600,000	5,900,000
Unrecognized tax benefit that would impact effective tax rate	59,800,000
within the next twelve months
Income Taxes [Line Items]
Anticipated decrease in unrecognized tax benefits	19,700,000
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Net operating losses carryforward, subject to expiration	308,700,000
Research and experimentation credits	45,700,000
Federal foreign tax credits	4,700,000
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating losses carryforward, subject to expiration	170,000,000
Research and experimentation credits	66,100,000
Foreign Country
Income Taxes [Line Items]
Net operating losses carryforward, not subject to expiration	259,200,000
Research and experimentation credits	81,500,000
Tax credit related to incentive deductions	$ 29,000,000
Minimum | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2007
Minimum | Foreign Country
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2010
Maximum | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2013
Maximum | Foreign Country
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2013