SUPPLEMENTARY CONSOLIDATED FINANCIAL STATEMENT SCHEDULE VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 151	$ 261	$ 282
Charged to Costs and Expenses	45	29	15
Charged to Other Accounts	9	(31)	10
Deductions From Allowance Accounts	(45)	(108)	(46)
Balance at End of Year	160	151	261
Current allowances	158	144	250
Allowances for credit losses
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	99	211	252
Charged to Costs and Expenses	45	29	4
Charged to Other Accounts	5	(35)	1
Deductions From Allowance Accounts	(35)	(106)	(46)
Balance at End of Year	114	99	211
Other allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	52	50	30
Charged to Costs and Expenses	0	0	11
Charged to Other Accounts	4	4	9
Deductions From Allowance Accounts	(10)	(2)	0
Balance at End of Year	46	52	50
Written-off
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Deductions From Allowance Accounts	(37)	(106)	(40)
Credited to other accounts and other
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Deductions From Allowance Accounts	$ (8)	$ (2)	$ (6)