COMMON STOCK AND STOCK-BASED COMPENSATION - Additional Information (Details) $ / shares in Units, $ in Millions	12 Months Ended
	May 31, 2025 USD ($) $ / shares shares	May 31, 2024 USD ($) $ / shares shares	May 31, 2023 USD ($) $ / shares shares
Common Stock and Share Based Compensation [Line Items]
Weighted average fair value per share of the options granted (in dollars per share) | $ / shares	$ 25.90	$ 32.78	$ 31.31
Restricted Stock And Restricted Stock Units
Common Stock and Share Based Compensation [Line Items]
Unrecognized compensation costs from stock options, net of estimated forfeitures, to be recognized as operating overhead expense over a weighted average period (in years)	2 years 6 months
Restricted stock granted to key employees under 1990 Plan, weighted average values per share (in dollars per share) | $ / shares	$ 82.32	$ 103.13	$ 115.56
Vested, fair value	$ 221	$ 340	$ 250
Unrecognized compensation costs from restricted stock, net of estimated forfeitures	$ 631
Class A Common Stock
Common Stock and Share Based Compensation [Line Items]
Common stock, no par value (in dollars per share) | $ / shares	$ 0
Common stock, number of shares authorized (in shares) | shares	400,000,000
Common stock, Class A conversion ratio to Class B (in shares)	1
Class B Common Stock
Common Stock and Share Based Compensation [Line Items]
Common stock, no par value (in dollars per share) | $ / shares	$ 0
Common stock, number of shares authorized (in shares) | shares	2,400,000,000
Class B Common Stock | ESPPs
Common Stock and Share Based Compensation [Line Items]
Employee stock purchase plans, payroll deductions	10.00%
Employee stock purchase plan offering period	6 months
Shares purchased, price as percentage of lower of the fair market value	85.00%
Purchase of shares by employee (in shares) | shares	3,600,000	3,100,000	3,000,000.0
Stock Incentive Plan
Common Stock and Share Based Compensation [Line Items]
Stock options vesting period (in years)	4 years
Stock options expiration from the date of grant (in years)	10 years
Options exercisable (in shares) | shares	49,800,000
Options exercisable (in dollars per share) | $ / shares	$ 98.00
Stock Incentive Plan | Stock options
Common Stock and Share Based Compensation [Line Items]
Unrecognized compensation costs from stock options, net of estimated forfeitures	$ 400
Unrecognized compensation costs from stock options, net of estimated forfeitures, to be recognized as operating overhead expense over a weighted average period (in years)	2 years 4 months 24 days
Stock Incentive Plan | Class B Common Stock
Common Stock and Share Based Compensation [Line Items]
Shares available for grant (in shares) | shares	798,000,000
Minimum term of market traded options for estimates of expected volatility (in years)	1 year
Aggregate intrinsic value for options outstanding	$ 20
Aggregate intrinsic value for options exercisable	20
Total intrinsic value of options exercised	$ 120	$ 305	$ 438
Weighted average remaining contractual life for options outstanding (in years)	5 years 4 months 24 days
Weighted average remaining contractual life for options exercisable (in years)	3 years 10 months 24 days