BALANCE SHEET ITEMS - Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Mar. 31, 2021
Goodwill [Line Items]
Gross Carrying Amount	$ 706	$ 526
Accumulated Amortization	(278)	(313)
Total amortization expense	428	213
Customer-related intangibles
Goodwill [Line Items]
Gross Carrying Amount	388	276
Accumulated Amortization	(148)	(154)
Total amortization expense	240	122
Licenses and other intangibles
Goodwill [Line Items]
Gross Carrying Amount	318	250
Accumulated Amortization	(130)	(159)
Total amortization expense	$ 188	$ 91