LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 158	$ 152
Right‑of‑use assets obtained in exchange for lease liabilities
Operating Lease	$ 78	$ 159