Fair value, after offset of derivative asset, of 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, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41678-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226006-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226008-175313

Name:	us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Derivative Financial Instruments (Summarized Fair Value Of Derivative Instruments In Consolidated Balance Sheets) (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Jul. 01, 2017	Oct. 01, 2016
Forward Contracts and swaps \| Other Long Term Assets
Derivative Instruments [Line Items]
Foreign currency forward contracts, Asset Fair Value	$ 86	$ 1,010
Forward Contracts and swaps \| Other Current Liabilities
Derivative Instruments [Line Items]
Foreign currency forward contracts, Liability Fair Value	(3,745)	(4,226)
Forward Contracts and swaps \| Other Long Term Liabilities
Derivative Instruments [Line Items]
Foreign currency forward contracts, Liability Fair Value	(844)	(886)
Interest Rate Swap \| Other Long Term Assets
Derivative Instruments [Line Items]
Foreign currency forward contracts, Asset Fair Value		0	$ 3
Interest Rate Swap \| Other Current Liabilities
Derivative Instruments [Line Items]
Foreign currency forward contracts, Liability Fair Value	(27)	(81)
Interest Rate Swap \| Other Long Term Liabilities
Derivative Instruments [Line Items]
Foreign currency forward contracts, Liability Fair Value	$ 0	$ (22)