EQUITY - AOCI Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) (net of tax)
Balance at the beginning of the period	$ 1,338	$ 2,211	$ 1,462	$ 2,711
Other comprehensive income (loss)	(105)	(214)	(104)	(478)
Balance at the end of the period	1,113	1,746	1,113	1,746
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) (net of tax)
Balance at the beginning of the period	(1,062)	(1,353)	(1,062)	(1,089)
Other comprehensive income (loss)	(105)	(214)	(104)	(478)
Balance at the end of the period	(1,167)	(1,567)	(1,167)	(1,567)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) (net of tax)
Balance at the beginning of the period	13	(1)		3
Other comprehensive income (loss)	4		17	(4)
Balance at the end of the period	17	(1)	17	(1)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) (net of tax)
Balance at the beginning of the period	(936)	(1,002)	(921)	(735)
Other comprehensive income (loss)	(109)	(221)	(125)	(488)
Balance at the end of the period	(1,045)	(1,223)	(1,045)	(1,223)
Net Change Retirement-Related Benefit Plans
Accumulated Other Comprehensive Income (Loss) (net of tax)
Balance at the beginning of the period	(140)	(350)	(142)	(357)
Other comprehensive income (loss)	1	7	3	14
Balance at the end of the period	$ (139)	$ (343)	$ (139)	$ (343)