BALANCE SHEET ITEMS - Goodwill and Other Intangible Assets (Details) $ in Thousands	9 Months Ended
Dec. 31, 2018 USD ($) segment	Mar. 31, 2018 USD ($)
Goodwill [Line Items]
Number of operating segments \| segment	4
Activity in goodwill account
Balance, beginning of the year	$ 1,121,170
Additions	10,984
Divestitures	(20,628)
Foreign currency translation adjustments	(32,692)
Balance, end of the period	1,078,834
Gross Carrying Amount	574,407	$ 610,950
Accumulated Amortization	(224,762)	(186,517)
Net Carrying Amount	$ 349,645	424,433
Fair value in excess of carrying amount (as a percentage)	25.00%
Consumer Technologies Group
Activity in goodwill account
Fair value in excess of carrying amount (as a percentage)	23.00%
HRS
Activity in goodwill account
Balance, beginning of the year	$ 550,983
Additions	0
Divestitures	(5,303)
Balance, end of the period	512,988
Consumer Technologies Group
Activity in goodwill account
Balance, beginning of the year	107,748
Additions	0
Divestitures	(4,484)
Foreign currency translation adjustments	0
Balance, end of the period	103,264
IEI
Activity in goodwill account
Balance, beginning of the year	337,707
Additions	0
Divestitures	(4,450)
Foreign currency translation adjustments	0
Balance, end of the period	333,257
CEC
Activity in goodwill account
Balance, beginning of the year	124,732
Additions	10,984
Divestitures	(6,391)
Foreign currency translation adjustments	0
Balance, end of the period	129,325
Customer-related intangibles
Activity in goodwill account
Gross Carrying Amount	297,563	306,943
Accumulated Amortization	(105,000)	(79,051)
Net Carrying Amount	192,563	227,892
Licenses and other intangibles
Activity in goodwill account
Gross Carrying Amount	276,844	304,007
Accumulated Amortization	(119,762)	(107,466)
Net Carrying Amount	$ 157,082	$ 196,541

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Percentage of fair value of reporting unit in excess of carrying amount.

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