BUSINESS SEGMENTS - Changes in Goodwill (Detail) $ in Millions	3 Months Ended
Apr. 03, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 828.7
Foreign currency translation and other	(18.7)
Goodwill, Ending Balance	810.0
Network and Security Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	463.6
Foreign currency translation and other	(8.2)
Goodwill, Ending Balance	455.4
Electrical and Electronic Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	181.3
Foreign currency translation and other	(0.8)
Goodwill, Ending Balance	180.5
Utility Power Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	183.8
Foreign currency translation and other	(9.7)
Goodwill, Ending Balance	$ 174.1

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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- Definition

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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