v3.26.1
POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - Reconciliation Of Benefit Obligations And Plan Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Pension Benefits      
CHANGE IN BENEFIT OBLIGATION      
Benefit obligation, beginning balance $ 13,156 $ 12,355  
Service cost 182 173 $ 164
Interest cost 499 498 527
Participants' contributions 16 15  
Amendments 18 12  
Net actuarial loss/(gain) (472) (263)  
Special termination benefits 11 3  
Currency translation and other (265) 980  
Benefit payments (691) (617)  
Benefit obligation, ending balance 12,455 13,156 12,355
CHANGE IN PLAN ASSETS      
Fair value of plan assets, beginning balance 11,672 10,857  
Actual return on plan assets 1,253 326  
Employer contributions 220 189  
Participants' contributions 16 15  
Currency translation and other (312) 903  
ESOP debt impacts 0 0  
Benefit payments (691) (617)  
Fair value of plan assets, ending balance 12,159 11,672 10,857
FUNDED STATUS (296) (1,484)  
Other Retiree Benefits      
CHANGE IN BENEFIT OBLIGATION      
Benefit obligation, beginning balance 3,396 2,687  
Service cost 80 61 68
Interest cost 181 147 157
Participants' contributions 59 56  
Amendments 0 (4)  
Net actuarial loss/(gain) 244 679  
Special termination benefits 13 2  
Currency translation and other 17 17  
Benefit payments (257) (250)  
Benefit obligation, ending balance 3,734 3,396 2,687
CHANGE IN PLAN ASSETS      
Fair value of plan assets, beginning balance 7,787 8,043  
Actual return on plan assets (540) (168)  
Employer contributions 40 42  
Participants' contributions 59 56  
Currency translation and other 0 0  
ESOP debt impacts 76 64  
Benefit payments (257) (250)  
Fair value of plan assets, ending balance 7,166 7,787 $ 8,043
FUNDED STATUS $ 3,432 $ 4,391