INTANGIBLE ASSETS INCLUDING GOODWILL - Goodwill by Segment (Details) - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Changes in Goodwill Balances
Beginning Balance	$ 812
Impairment	0	$ 0
Additions and Other Adjustments	(6)
Ending Balance	806
Japan
Changes in Goodwill Balances
Beginning Balance	495
Additions and Other Adjustments	(6)
Ending Balance	489
Principal Markets
Changes in Goodwill Balances
Beginning Balance	142
Ending Balance	142
Strategic Markets
Changes in Goodwill Balances
Beginning Balance	176
Ending Balance	$ 176