v3.25.4
Employee Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Changes Recognized in Comprehensive Income      
Net actuarial (gain) loss during period $ 180 $ (228) $ 550
Amortization of actuarial (gain) loss (335) (247) (244)
Prior service (credits) costs during period (59) 48 29
Amortization of prior service (costs) credits 10 10 13
Other Benefits      
Net Periodic Benefit Cost      
Service cost 30 34 33
Interest cost 99 98 97
Expected return on plan assets 0 0 0
Amortization of prior service costs (credits) (23) (25) (25)
Recognized actuarial (gains) losses (15) (15) (19)
Settlement losses (gains) 0 0 0
Curtailment losses (gains) (3) (1) 0
Special termination benefits 0 0 0
Acquisition/Divestiture losses (gains) 0 0 0
Total net periodic benefit cost 88 91 86
Changes Recognized in Comprehensive Income      
Net actuarial (gain) loss during period 119 (151) 108
Amortization of actuarial (gain) loss 15 15 19
Prior service (credits) costs during period (29) 30 1
Amortization of prior service (costs) credits 26 25 25
Total changes recognized in other 
comprehensive income 131 (81) 153
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income 219 10 239
U.S. | Pension Benefits      
Net Periodic Benefit Cost      
Service cost 365 357 342
Interest cost 505 465 448
Expected return on plan assets (736) (597) (557)
Amortization of prior service costs (credits) 4 4 4
Recognized actuarial (gains) losses 130 243 199
Settlement losses (gains) 181 0 56
Curtailment losses (gains) 101 0 0
Special termination benefits 26 0 0
Acquisition/Divestiture losses (gains) 0 0 0
Total net periodic benefit cost 576 472 492
Changes Recognized in Comprehensive Income      
Net actuarial (gain) loss during period (22) (122) 270
Amortization of actuarial (gain) loss (310) (243) (255)
Prior service (credits) costs during period 0 0 0
Amortization of prior service (costs) credits (4) (4) (4)
Total changes recognized in other 
comprehensive income (336) (369) 11
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income 240 103 503
Int’l. | Pension Benefits      
Net Periodic Benefit Cost      
Service cost 55 54 58
Interest cost 207 191 193
Expected return on plan assets (205) (196) (204)
Amortization of prior service costs (credits) 12 11 8
Recognized actuarial (gains) losses 43 18 8
Settlement losses (gains) (4) 1 0
Curtailment losses (gains) (7) 0 2
Special termination benefits 0 0 2
Acquisition/Divestiture losses (gains) 0 0 (2)
Total net periodic benefit cost 101 79 65
Changes Recognized in Comprehensive Income      
Net actuarial (gain) loss during period 83 45 172
Amortization of actuarial (gain) loss (40) (19) (8)
Prior service (credits) costs during period (30) 18 28
Amortization of prior service (costs) credits (12) (11) (8)
Total changes recognized in other 
comprehensive income 1 33 184
Recognized in Net Periodic Benefit Cost and Other Comprehensive Income $ 102 $ 112 $ 249