Derivative Instruments and Hedging Activities - Gains (Losses) Related to Foreign Currency Forward Exchange Contracts that are Not Designated as Hedging Instruments (Detail) - USD ($) $ in Millions	12 Months Ended
Oct. 02, 2015	Sep. 26, 2014	Sep. 27, 2013
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| Selling, general and administrative expenses
Derivative [Line Items]
Amount of Gain Recognized in Net Earnings on Derivative	$ 27.6	$ 13.7	$ 9.6

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

Name:	us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration