GOODWILL AND OTHER INTANGIBLES - Summary of Changes in Carrying Value of Goodwill (Details) $ in Thousands	3 Months Ended
Dec. 31, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 442,643
Business Acquisitions	1,799
Business Divestitures	(851)
Foreign currency translations adjustments	2,865
Goodwill, ending balance	446,456
Consumer and Professional Products
Goodwill [Roll Forward]
Goodwill, beginning balance	232,845
Business Acquisitions	1,799
Business Divestitures	0
Foreign currency translations adjustments	2,865
Goodwill, ending balance	237,509
Home and Building Products
Goodwill [Roll Forward]
Goodwill, beginning balance	191,253
Business Acquisitions	0
Business Divestitures	0
Foreign currency translations adjustments	0
Goodwill, ending balance	191,253
Defense Electronics
Goodwill [Roll Forward]
Goodwill, beginning balance	18,545
Business Acquisitions	0
Business Divestitures	(851)
Foreign currency translations adjustments	0
Goodwill, ending balance	$ 17,694

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 20
-Section 45
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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