Derivative Instruments (Schedule of Fair Value Of Foreign Exchange Contracts) (Detail) (Foreign Exchange Contract, Not Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	Mar. 28, 2014	Sep. 27, 2013	Sep. 28, 2012
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Foreign exchange forward and option contracts, asset	$ 0.6	$ 0.9	$ 0
Accrued and other current liabilities
Derivatives, Fair Value [Line Items]
Foreign exchange forward and option contracts, liability	$ 0.6	$ 1.4	$ 0

Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226000-175313

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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