INTANGIBLE ASSETS INCLUDING GOODWILL - Intangible Assets by Class (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Intangible asset balances by major asset class
Gross Carrying Amount	$ 394		$ 394		$ 353
Accumulated Amortization	(206)		(206)		(182)
Net Carrying Amount	188		188		171
Intangible asset amortization expense	16	$ 10	27	$ 25
Net carrying amount of intangible assets increased			17
Capitalized software
Intangible asset balances by major asset class
Gross Carrying Amount	137		137		83
Accumulated Amortization	(28)		(28)		(15)
Net Carrying Amount	109		109		68
Intangible asset amortization expense	9		13
Customer relationships
Intangible asset balances by major asset class
Gross Carrying Amount	221		221		232
Accumulated Amortization	(152)		(152)		(141)
Net Carrying Amount	70		70		91
Completed technology
Intangible asset balances by major asset class
Gross Carrying Amount	20		20		20
Accumulated Amortization	(20)		(20)		(20)
Patents and trademarks
Intangible asset balances by major asset class
Gross Carrying Amount	17		17		18
Accumulated Amortization	(7)		(7)		(6)
Net Carrying Amount	$ 10		$ 10		$ 13