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STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Feb. 28, 2025
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Share-based Compensation Arrangements by Share-based Payment Award
The following table summarizes the Company's total stock-based compensation expense recognized within Cost of sales or Operating overhead expense, as applicable: 
 THREE MONTHS ENDEDNINE MONTHS ENDED
(Dollars in millions)
FEBRUARY 28, 2025FEBRUARY 29, 2024FEBRUARY 28, 2025FEBRUARY 29, 2024
Stock options(1)
$69 $89 $222 $253 
ESPPs17 17 53 55 
Restricted stock and restricted stock units(2)
83 110 269 310 
TOTAL STOCK-BASED COMPENSATION EXPENSE$169 $216 $544 $618 
(1)Expense for stock options includes the expense associated with stock appreciation rights.
(2)Expense for restricted stock units includes an immaterial amount of expense for PSUs.