WORKFORCE REBALANCING AND SITE-RATIONALIZATION CHARGES - Classification of restructuring activity (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	21 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2023
RESTRUCTURING
Charges	$ 33	$ 140	$ 275
Cost of services
RESTRUCTURING
Charges	14	11	82
Selling, general and administrative expense.
RESTRUCTURING
Charges	1	14	23
Workforce rebalancing charges
RESTRUCTURING
Charges	$ 19	$ 115	$ 171