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Note 7 Income Tax (Detail) (USD $)	3 Months Ended		6 Months Ended
Note 7 Income Tax (Detail) (USD $)	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 28,607,000us-gaap_IncomeTaxExpenseBenefit	$ 17,775,000us-gaap_IncomeTaxExpenseBenefit	$ 51,755,000us-gaap_IncomeTaxExpenseBenefit	$ 28,405,000us-gaap_IncomeTaxExpenseBenefit
Other Information Pertaining to Income Taxes			In each of the past three years, the Company has released a portion of its valuation allowance attributable to certain deferred tax assets in the U.S. and foreign jurisdictions. These releases have ranged from $21.5 million to $158.7 million.
Deferred Tax Assets, Valuation Allowance					663,200,000
Tax Adjustments, Settlements and Unusual Provisions	$ 15,500,000