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

Employee Benefit Plans - Pretax Amounts Recognized in OCI (Details)

v3.25.0.1
Employee Benefit Plans - Pretax Amounts Recognized in OCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) $ (19) $ 638
Amortization of actuarial gain (loss) and prior service cost (148) (57)
Current year prior service cost (credit) (9) 4
Amounts recognized in OCI (176) 585
U.S. | Postretirement Health and Life Plans    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) (38) (15)
Amortization of actuarial gain (loss) and prior service cost 35 78
Current year prior service cost (credit) 0 0
Amounts recognized in OCI (3) 63
Non-U.S. | Pension Plan    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) 5 177
Amortization of actuarial gain (loss) and prior service cost (16) (12)
Current year prior service cost (credit) (9) 4
Amounts recognized in OCI (20) 169
Qualified | U.S. | Pension Plan    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) (37) 391
Amortization of actuarial gain (loss) and prior service cost (134) (94)
Current year prior service cost (credit) 0 0
Amounts recognized in OCI (171) 297
Nonqualified | U.S. | Other Pension Plan    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) 51 85
Amortization of actuarial gain (loss) and prior service cost (33) (29)
Current year prior service cost (credit) 0 0
Amounts recognized in OCI $ 18 $ 56