REVENUE RECOGNITION - Deferred Costs (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Deferred Contract Costs
Deferred costs	$ 1,983	$ 1,983		$ 2,236
Deferred costs, current	952	952		1,070
Deferred costs, noncurrent	1,031	1,031		1,166
Total deferred costs amortized	449	912
Amortization of deferred costs	143	281	$ 222
Deferred transition costs
Deferred Contract Costs
Deferred costs	778	778		856
Total deferred costs amortized	88	173
Prepaid software costs
Deferred Contract Costs
Deferred costs	705	705		782
Total deferred costs amortized	218	459
Capitalized costs to fulfill contracts
Deferred Contract Costs
Deferred costs	219	219		285
Capitalized costs to obtain contracts
Deferred Contract Costs
Deferred costs	$ 281	$ 281		$ 313
Minimum
Deferred Contract Costs
Term of contract with customer		3 years
Maximum
Deferred Contract Costs
Term of contract with customer		6 years