EMPLOYEE STOCK PLANS - Additional Information (Detail) $ in Millions	9 Months Ended
Jun. 29, 2018 USD ($) shares
Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to outstanding stock awards \| $	$ 15.8
Weighted average period unrecognized compensation expense is expected to be recognized, years	2 years 22 days
Restricted stocks, restricted stock units, deferred stock units and performance units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to outstanding stock awards \| $	$ 40.2
Weighted average period unrecognized compensation expense is expected to be recognized, years	1 year 10 months 24 days
Fourth Amended 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares counted against the available for grant (in shares)	2.6
Fourth Amended 2005 Plan \| Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares counted against the available for grant (in shares)	1
Fourth Amended 2005 Plan \| Performance stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares counted against the available for grant (in shares)	1
Beginning Fiscal Year 2018 \| Fourth Amended 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ratio of maximum payout (in shares)	2.0
Beginning Fiscal Year 2017 \| Fourth Amended 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ratio of maximum payout (in shares)	1.75
Beginning Fiscal Year 2016 \| Fourth Amended 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ratio of maximum payout (in shares)	1.75
Beginning In Fiscal 2015 \| Fourth Amended 2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ratio of maximum payout (in shares)	2.0

Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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