v3.24.0.1
Post-Employment Benefits - Benefit Plan Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amounts recognized on the consolidated balance sheets      
Other long-term liabilities $ (1,538) $ (1,638)  
Defined benefit plans      
Projected benefit obligations      
Beginning of period 8,588 12,006  
Service cost 270 454 $ 440
Interest cost 432 297 237
Employee contributions 0 1  
Amendments 0 0  
Actuarial (gain) loss 491 (3,668)  
Benefits paid (316) (294)  
Other, primarily foreign currency translation adjustments 79 (208)  
End of period 9,544 8,588 12,006
Fair value of plan assets      
Beginning of period 8,472 10,655  
Actual return on plan assets 1,230 (2,031)  
Company contributions 366 357  
Employee contributions 0 1  
Benefits paid (316) (294)  
Other, primarily foreign currency translation adjustments 87 (216)  
End of period 9,839 8,472 10,655
Funded status, end of period 295 (116)  
Amounts recognized on the consolidated balance sheets      
Other assets 1,086 896  
Accounts payable and accrued liabilities (17) (14)  
Other long-term liabilities (774) (998)  
Net obligation 295 (116)  
Actuarial loss, net (2,290) (2,365)  
Prior service cost (credit) 1 3  
Accumulated other comprehensive loss (income) 2,291 2,368  
Other post-employment plans      
Projected benefit obligations      
Beginning of period 667 850  
Service cost 37 51 48
Interest cost 37 23 19
Amendments   (2)  
Actuarial (gain) loss 89 (229)  
Benefits paid (35) (25)  
Other, primarily foreign currency translation adjustments 1 (1)  
End of period 796 667 $ 850
Fair value of plan assets      
Company contributions 35 25  
Benefits paid (35) (25)  
Funded status, end of period (796) (667)  
Amounts recognized on the consolidated balance sheets      
Accounts payable and accrued liabilities (32) (27)  
Other long-term liabilities (764) (640)  
Net obligation (796) (667)  
Actuarial loss, net (282) (205)  
Prior service cost (credit) (297) (333)  
Accumulated other comprehensive loss (income) $ (15) $ (128)