BALANCE SHEET ITEMS - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
Dec. 31, 2019	Mar. 31, 2019
Activity in goodwill account
Balance, beginning of the year	$ 1,073,055
Divestitures	(1,239)
Foreign currency translation adjustments	(2,004)
Balance, end of the period	1,069,812
Gross Carrying Amount	524,519	$ 571,910
Accumulated Amortization	(244,591)	(240,915)
Net Carrying Amount	279,928	330,995
Customer-related intangibles
Activity in goodwill account
Gross Carrying Amount	277,422	297,306
Accumulated Amortization	(120,812)	(113,627)
Net Carrying Amount	156,610	183,679
Licenses and other intangibles
Activity in goodwill account
Gross Carrying Amount	247,097	274,604
Accumulated Amortization	(123,779)	(127,288)
Net Carrying Amount	123,318	$ 147,316
HRS
Activity in goodwill account
Balance, beginning of the year	507,209
Divestitures	(1,102)
Foreign currency translation adjustments	(2,004)
Balance, end of the period	504,103
IEI
Activity in goodwill account
Balance, beginning of the year	333,257
Divestitures	(137)
Foreign currency translation adjustments	0
Balance, end of the period	333,120
CEC
Activity in goodwill account
Balance, beginning of the year	129,325
Divestitures	0
Foreign currency translation adjustments	0
Balance, end of the period	129,325
CTG
Activity in goodwill account
Balance, beginning of the year	103,264
Divestitures	0
Foreign currency translation adjustments	0
Balance, end of the period	$ 103,264

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

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