STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Nov. 30, 2022

Share-based Payment Arrangement, Noncash Expense [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The following table summarizes the Company's total stock-based compensation expense recognized in Cost of sales or Operating overhead expense, as applicable: 

	THREE MONTHS ENDED NOVEMBER 30,				SIX MONTHS ENDED NOVEMBER 30,
(Dollars in millions)	2022		2021		2022		2021
Stock options(1)	$	79	$	81	$	154	$	146
ESPPs	18		14		33		29
Restricted stock and restricted stock units(1)(2)	97		75		177		131
TOTAL STOCK-BASED COMPENSATION EXPENSE	$	194	$	170	$	364	$	306

(1)Expense for stock options includes the expense associated with stock appreciation rights. Accelerated stock option expense is primarily recorded for employees meeting certain retirement eligibility requirements.

(2)Restricted stock units include RSUs and PSUs.

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The weighted average assumptions used to estimate these fair values were as follows:

	SIX MONTHS ENDED NOVEMBER 30,
	2022		2021
Dividend yield	0.9	%	0.8	%
Expected volatility	27.1	%	24.9	%
Weighted average expected life (in years)	5.8		5.8
Risk-free interest rate	3.3	%	0.9	%