Quarterly report [Sections 13 or 15(d)]

EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Details)

v3.26.3
EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Defined Benefit Pension Plan | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost $ 269 $ 281 $ 805 $ 844
Interest cost 701 679 2,101 2,038
Expected return on assets (822) (787) (2,467) (2,342)
Amortization of prior service cost 36 39 110 117
Net periodic benefit cost 184 212 549 657
Defined Benefit Pension Plan | International Pension Benefits        
Net Periodic Cost:        
Service cost 9 10 27 28
Interest cost 16 17 50 49
Expected return on assets (23) (21) (67) (62)
Amortization of prior service cost 1 0 1 1
Net periodic benefit cost 3 6 11 16
U.S. Postretirement Medical Benefits | U.S. Pension Benefits        
Net Periodic Cost:        
Service cost 4 5 12 13
Interest cost 25 28 75 82
Expected return on assets (1) (2) (3) (5)
Amortization of prior service cost 0 0 0 0
Net periodic benefit cost $ 28 $ 31 $ 84 $ 90