Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details)

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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
U.S. | Postretirement Health and Life Plans      
Components of net periodic benefit cost (income)      
Service cost $ 2 $ 2 $ 4
Interest cost 33 36 25
Expected return on plan assets (3) (2) (2)
Amortization of actuarial loss (gain) and prior service cost (35) (78) (9)
Recognized loss (gain) due to settlements, curtailments, and other 0 0 0
Net periodic benefit cost (income) $ (3) $ (42) $ 18
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 5.17% 5.56% 2.85%
Expected return on plan assets 3.40% 2.00% 2.00%
U.S. | Qualified | Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 0 $ 0 $ 0
Interest cost 587 616 438
Expected return on plan assets (1,206) (1,191) (1,204)
Amortization of actuarial loss (gain) and prior service cost 134 94 140
Recognized loss (gain) due to settlements, curtailments, and other 0 0 0
Net periodic benefit cost (income) $ (485) $ (481) $ (626)
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 5.13% 5.54% 2.86%
Expected return on plan assets 6.50% 6.50% 5.75%
U.S. | Nonqualified | Other Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 0 $ 0 $ 0
Interest cost 103 111 74
Expected return on plan assets (90) (97) (59)
Amortization of actuarial loss (gain) and prior service cost 33 29 54
Recognized loss (gain) due to settlements, curtailments, and other 0 0 1
Net periodic benefit cost (income) $ 46 $ 43 $ 70
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 5.19% 5.58% 2.80%
Expected return on plan assets 4.73% 4.98% 2.38%
Rate of compensation increase 4.00% 4.00% 4.00%
Non-U.S. | Pension Plan      
Components of net periodic benefit cost (income)      
Service cost $ 31 $ 27 $ 29
Interest cost 86 80 53
Expected return on plan assets (89) (72) (59)
Amortization of actuarial loss (gain) and prior service cost 16 11 14
Recognized loss (gain) due to settlements, curtailments, and other (1) 1 10
Net periodic benefit cost (income) $ 43 $ 47 $ 47
Weighted-average assumptions used to determine net cost for years ended December 31      
Discount rate 4.48% 4.59% 1.85%
Expected return on plan assets 5.18% 4.17% 2.17%
Rate of compensation increase 4.33% 4.25% 4.46%