STOCK-BASED COMPENSATION - Total Stock-Based Compensation Expense (Details) - Class B Common Stock - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 169	$ 216	$ 544	$ 618
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	69	89	222	253
ESPPs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	17	17	53	55
Restricted stock and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 83	$ 110	$ 269	$ 310