SUMMARY OF ACCOUNTING POLICIES - Goodwill (Details) - USD ($)	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Goodwill [Line Items]
Impairment charges	$ 0
Activity in goodwill account
Balance, beginning of the period	1,065,000,000	$ 1,073,000,000
Divestitures	(1,000,000)	(1,000,000)
Foreign currency translation adjustments	26,000,000	(7,000,000)
Balance, end of the period	1,090,000,000	1,065,000,000
FAS \| Communications, Enterprise and Cloud
Activity in goodwill account
Balance, beginning of the period	188,000,000	188,000,000
Divestitures	0	0
Foreign currency translation adjustments	1,000,000	0
Balance, end of the period	189,000,000	188,000,000
FAS \| Lifestyle
Activity in goodwill account
Balance, beginning of the period	131,000,000	131,000,000
Divestitures	0	0
Foreign currency translation adjustments	0	0
Balance, end of the period	131,000,000	131,000,000
FAS \| Consumer Devices
Activity in goodwill account
Balance, beginning of the period	51,000,000	51,000,000
Divestitures	0	0
Foreign currency translation adjustments	0	0
Balance, end of the period	51,000,000	51,000,000
FRS \| Automotive
Activity in goodwill account
Balance, beginning of the period	174,000,000	182,000,000
Divestitures	0	0
Foreign currency translation adjustments	22,000,000	(8,000,000)
Balance, end of the period	196,000,000	174,000,000
FRS \| Health Solutions
Activity in goodwill account
Balance, beginning of the period	192,000,000	192,000,000
Divestitures	0	(1,000,000)
Foreign currency translation adjustments	2,000,000	1,000,000
Balance, end of the period	194,000,000	192,000,000
FRS \| Industrial
Activity in goodwill account
Balance, beginning of the period	329,000,000	329,000,000
Divestitures	(1,000,000)	0
Foreign currency translation adjustments	1,000,000	0
Balance, end of the period	$ 329,000,000	$ 329,000,000

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.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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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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