v3.22.4
Pensions And Other Postretirement Benefits - Components of Expense and Assumptions (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Other Postretirement Benefits Plan        
Components of expense        
Service cost   $ 16 $ 18 $ 19
Interest cost   148 123 173
Expected return on plan assets   0 0 0
Amortization of net actuarial losses   67 97 74
Curtailments, settlements and other   (5) (6) (8)
Net periodic pension and OPEB (income) expense   $ 226 $ 232 $ 258
Weighted-average assumptions used to determine benefit obligations(a)        
Discount rate 2.53% 5.51% 2.97% 2.53%
Weighted-average assumptions used to determine net expense(a)        
Discount rate   2.84% 2.24% 3.00%
U.S. | Pension Plan        
Components of expense        
Service cost   $ 233 $ 260 $ 251
Service cost   161 187  
Interest cost   1,292 1,074 1,716
Expected return on plan assets   (3,000) (3,178) (3,267)
Amortization of net actuarial losses   18 26 16
Curtailments, settlements and other   (17) 15 17
Net periodic pension and OPEB (income) expense   $ (1,474) $ (1,803) $ (1,267)
Weighted-average assumptions used to determine benefit obligations(a)        
Discount rate 2.37% 5.47% 2.78% 2.37%
Weighted-average assumptions used to determine net expense(a)        
Discount rate   2.34% 1.86% 2.84%
Expected rate of return on plan assets   5.38% 5.63% 5.88%
U.S. | Pension Plan | Plan        
Weighted-average assumptions used to determine net expense(a)        
Expected rate of return on plan assets   6.30% 5.40%  
Non-U.S. | Pension Plan        
Components of expense        
Service cost   $ 157 $ 121 $ 145
Service cost   146 109  
Interest cost   293 236 362
Expected return on plan assets   (534) (610) (675)
Amortization of net actuarial losses   133 212 171
Curtailments, settlements and other   10 7 241
Net periodic pension and OPEB (income) expense   $ 59 $ (34) $ 244
Weighted-average assumptions used to determine benefit obligations(a)        
Discount rate 1.62% 4.85% 2.13% 1.62%
Weighted-average assumptions used to determine net expense(a)        
Discount rate   2.98% 2.38% 2.80%
Expected rate of return on plan assets   4.39% 4.67% 4.96%
Canada | Pension Plan        
Weighted-average assumptions used to determine net expense(a)        
Payment for annuity purchase $ 1,500      
Non-operating pension settlement charge $ 130