v3.25.4
EMPLOYEE BENEFIT PLANS - Net Periodic Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Benefits      
Defined Benefit Plan Disclosure      
Service cost $ 273 $ 233 $ 95
Interest cost 831 820 855
Expected return on plan assets (1,067) (1,062) (1,060)
Amortization of prior service credit 0 0 0
Recognized net actuarial loss 202 248 240
Special termination benefits 0 0 0
Net periodic cost 239 239 130
Other Postretirement and Postemployment Benefits      
Defined Benefit Plan Disclosure      
Service cost 132 92 71
Interest cost 181 182 200
Expected return on plan assets (2) (2) (1)
Amortization of prior service credit (4) (4) (5)
Recognized net actuarial loss 20 18 14
Special termination benefits 1 5 0
Net periodic cost $ 328 $ 291 $ 279