EMPLOYEE BENEFIT PLANS Narrative (Details)	1 Months Ended	12 Months Ended
	Apr. 30, 2020 USD ($)	May 31, 2024 Tranche Item shares	May 31, 2023 Item shares	May 31, 2022 shares	May 31, 2021 shares
Stock-based Payment Award [Line Items]
Options outstanding		51,000,000	64,000,000	97,000,000	107,000,000
Options outstanding vested		24,000,000
Restricted stock-based awards outstanding		138,000,000	152,000,000	128,000,000	110,000,000
Stock options outstanding		16,000,000
Performance-based stock options [Member]
Stock-based Payment Award [Line Items]
Number of vesting tranches granted that potentially may vest | Tranche		7
Number of tranches vests on attainment of market-based metric | Tranche		1
Number of vesting tranches require attainment of both a performance and a market condition | Tranche		6
Extended expiration period		3 years
Number of capitalization goals | Item		6
Number of operational goals | Item		1	1
Remaining number of tranches vested | Tranche		6
Remaining number of tranches not vested | Tranche		6
Award service period for market-based metric		1 year
2020 Plan [Member]
Stock-based Payment Award [Line Items]
Number of shares authorized		457,000,000
Increase in number of authorized shares of stock that may be issued		350,000,000		300,000,000
2020 and 2000 Plan [Member]
Stock-based Payment Award [Line Items]
Vesting percentage		25.00%
Vesting period		4 years
Expiration period		10 years
2020 and 2000 Plan [Member] | Restricted Stock Units [Member]
Stock-based Payment Award [Line Items]
Equivalent number of shares deducted against share pool (in actual number of shares)		2,500,000
2020 and 2000 Plan [Member] | Performance-based stock options [Member]
Stock-based Payment Award [Line Items]
Options outstanding		13,000,000
Options outstanding vested		11,000,000
Restricted stock-based awards outstanding		134,000,000
Stock options outstanding		38,000,000
Acquired plans [Member]
Stock-based Payment Award [Line Items]
Options outstanding		257,000
Restricted stock-based awards outstanding		520,000
Directors' Plan [Member]
Stock-based Payment Award [Line Items]
Increase in number of authorized shares of stock that may be issued			2,000,000
Options outstanding		92,000
Shares of common stock available for future awards		1,000,000
Shares of common stock reserved for issuance		10,000,000
Directors' Plan [Member] | Restricted Stock Units [Member]
Stock-based Payment Award [Line Items]
Restricted stock-based awards outstanding		36,000
Maximum value of annual grants | $	$ 350,000