SUMMARY OF ACCOUNTING POLICIES - Investments (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Equity securities, FV-NI	$ 115	$ 131
Equity in earnings (losses) of unconsolidated affiliates	$ (4)	$ 61	$ 83

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration