Schedule of Components of Deferred Tax Assets and Liabilities (Detail) (USD $)	Sep. 27, 2013	Sep. 28, 2012
Schedule Of Deferred Income Tax Assets And Liabilities [Line Items]
Deferred revenues	$ 26,800,000	$ 26,800,000
Deferred compensation	34,900,000	32,700,000
Product warranty	13,900,000	13,700,000
Inventory adjustments	18,300,000	17,000,000
Equity-based compensation	33,300,000	41,800,000
Environmental reserve	5,700,000	5,900,000
Net operating loss carryforwards	78,600,000	54,200,000
Other	37,800,000	45,400,000
Total deferred tax assets, gross	249,300,000	237,500,000
Valuation allowance	(60,700,000)	(45,800,000)
Total deferred tax assets	188,600,000	191,700,000
Tax-deductible goodwill	(27,300,000)	(27,400,000)
Fixed assets	(17,700,000)	(22,300,000)
Other	(30,400,000)	(28,800,000)
Total deferred tax liabilities	(75,400,000)	(78,500,000)
Net deferred tax assets	113,200,000	113,200,000
Net current deferred tax assets	122,250,000	115,786,000
Net long-term deferred tax assets (included in “Other Assets”)	10,500,000	13,800,000
Net current deferred tax liabilities (included in “Accrued Expenses”)	(7,600,000)	(2,900,000)
Net long-term deferred tax liabilities (included in “Other long-term liabilities”)	(12,000,000)	(13,500,000)
Net deferred tax assets	$ 113,200,000	$ 113,200,000