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EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Pension Benefits        
Defined Benefit Plan Disclosure        
Service cost $ 95 $ 88 $ 125 $ 116
Interest cost 208 201 623 603
Expected return on plan assets (267) (263) (800) (789)
Amortization of prior service credit 0 0 0 0
Recognized net actuarial loss 51 62 151 186
Net periodic cost 87 88 99 116
Other Postretirement and Postemployment Benefits        
Defined Benefit Plan Disclosure        
Service cost 33 23 99 69
Interest cost 45 45 135 136
Expected return on plan assets 0 (1) (1) (2)
Amortization of prior service credit (1) (1) (3) (3)
Recognized net actuarial loss 5 5 15 14
Net periodic cost $ 82 $ 71 $ 245 $ 214