GOODWILL (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 951,057	$ 972,606
Acquisitions	(116,154)
Divestitures	(1,815)	(452)
Goodwill, Translation Adjustments	30,933	(21,097)
Goodwill	1,096,329	951,057
Commercial/Industrial
Goodwill [Line Items]
Goodwill	436,141	447,828
Acquisitions	(2,677)
Divestitures	(1,168)
Goodwill, Translation Adjustments	10,881	(11,687)
Goodwill	448,531	436,141
Defense
Goodwill [Line Items]
Goodwill	327,655	337,603
Acquisitions	113,477
Divestitures	(647)	(452)
Goodwill, Translation Adjustments	19,847	(9,496)
Goodwill	460,332	327,655
Power
Goodwill [Line Items]
Goodwill	187,261	187,175
Goodwill, Translation Adjustments	205	86
Goodwill	$ 187,466	$ 187,261

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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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

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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.

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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.

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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.

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