WORKFORCE REBALANCING AND SITE-RATIONALIZATION CHARGES - Classification of restructuring activity (Details) - USD ($) $ in Millions	12 Months Ended		24 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024
RESTRUCTURING
Charges	$ 174	$ 135	$ 310
Workforce Rebalancing Liabilities Inherited from Former Parent
RESTRUCTURING
Charges	4
Cost of services
RESTRUCTURING
Charges	23	71	94
Selling, general and administrative expense.
RESTRUCTURING
Charges	16	9	25
Workforce rebalancing charges
RESTRUCTURING
Charges	$ 135	$ 55	$ 190