v3.25.4
Pension And Other Postretirement Benefits (Assets Recorded In Balance Sheet And Other Comprehensive Income) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Postretirement benefits reserves $ (8,847) $ (9,700)
Other Postretirement Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Balance at December 31 (4,508) (4,427)
Current liabilities (276) (283)
Postretirement benefits reserves (4,232) (4,144)
Total recorded (4,508) (4,427)
Net actuarial loss/(gain) (1,291) (1,421)
Prior service cost (345) (405)
Total recorded in accumulated other comprehensive income (1,636) (1,826)
Pension Benefits - U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Balance at December 31 (1,474) (1,755)
Total recorded (1,474) (1,755)
Pension Benefits - U.S. | Pension Plans, Defined Benefit    
Defined Benefit Plan Disclosure [Line Items]    
Balance at December 31 (1,474) (1,755)
Other assets 3 2
Current liabilities (199) (213)
Postretirement benefits reserves (1,278) (1,544)
Total recorded (1,474) (1,755)
Net actuarial loss/(gain) 79 631
Prior service cost (222) (252)
Total recorded in accumulated other comprehensive income (143) 379
Pension Benefits - Non-U.S.    
Defined Benefit Plan Disclosure [Line Items]    
Balance at December 31 (370) (1,820)
Total recorded (370) (1,820)
Pension Benefits - Non-U.S. | Pension Plans, Defined Benefit    
Defined Benefit Plan Disclosure [Line Items]    
Balance at December 31 (370) (1,820)
Other assets 3,175 2,399
Current liabilities (208) (207)
Postretirement benefits reserves (3,337) (4,012)
Total recorded (370) (1,820)
Net actuarial loss/(gain) (532) 557
Prior service cost 447 420
Total recorded in accumulated other comprehensive income $ (85) $ 977