FINANCIAL ASSETS AND LIABILITIES - Effect of Hedge Activity on Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Cost of services	$ 3,613	$ 4,071	$ 7,290	$ 8,233
Selling, general and administrative expenses	706	705	1,400	1,419
Other expense (income)	(10)	$ (17)	(13)	$ (6)
Cost of services.
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) from Hedge Activity			1
Other expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) from Hedge Activity	$ (14)		$ (16)