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RETIREMENT PLANS (Tables)
6 Months Ended
Nov. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Retirement Plan Costs
Our retirement plans costs for the periods ended November 30, 2025 and 2024 were as follows (in millions):

Three Months EndedSix Months Ended

November 30, 2025November 30, 2024November 30, 2025November 30, 2024
Defined benefit pension plans$46 $70 $93 $140 
Defined contribution plans312 288 618 575 
Postretirement healthcare plans23 21 45 43 

$381 $379 $756 $758 
Schedule of Net Periodic Benefit Cost
Net periodic benefit cost of the pension and postretirement healthcare plans for the periods ended November 30, 2025 and 2024 included the following components (in millions):
Three Months Ended

U.S. Pension Plans

International Pension Plans

Postretirement Healthcare Plans

2025

2024

20252024

20252024
Service cost
$111 

$124 

$10 

$11 

$

$
Other retirement plans expense (income):
Interest cost
379 

363 

11 

10 

17 

16 
Expected return on plan assets
(457)

(430)

(6)

(7)

— 

— 
Amortization of prior service credit and other
(2)

(2)

— 


(1)

(1)
(80)

(69)



16 

15 
Net periodic benefit cost
$31 

$55 

$15 

$15 

$23 

$21 

Six Months Ended

U.S. Pension Plans

International Pension Plans

Postretirement Healthcare Plans

2025

2024

2025

2024

2025

2024
Service cost$223 

$249 

$20 

$20 

$14 

$13 
Other retirement plans expense (income):





Interest cost757 

724 

24 

22 

33 

32 
Expected return on plan assets(914)

(860)

(13)

(12)

— 

— 
Amortization of prior service credit and other(4)

(4)

— 


(2)

(2)

(161)

(140)

11 

11 

31 

30 
Net periodic benefit cost$62 

$109 

$31 

$31 

$45 

$43