Annual report pursuant to Section 13 and 15(d)

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

v3.24.0.1
Employee Benefit Plans - Pretax Amounts Recognized in OCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) $ 638 $ 1,090
Amortization of actuarial gain (loss) and prior service cost (57) (199)
Current year prior service cost (credit) 4 3
Amounts recognized in OCI 585 894
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) (15) (198)
Amortization of actuarial gain (loss) and prior service cost 78 9
Current year prior service cost (credit) 0 0
Amounts recognized in OCI 63 (189)
Non-U.S. | Pension Plan    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) 177 (107)
Amortization of actuarial gain (loss) and prior service cost (12) (14)
Current year prior service cost (credit) 4 3
Amounts recognized in OCI 169 (118)
Qualified | U.S. | Pension Plan    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]    
Current year actuarial loss (gain) 391 1,490
Amortization of actuarial gain (loss) and prior service cost (94) (140)
Current year prior service cost (credit) 0 0
Amounts recognized in OCI 297 1,350
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) 85 (95)
Amortization of actuarial gain (loss) and prior service cost (29) (54)
Current year prior service cost (credit) 0 0
Amounts recognized in OCI $ 56 $ (149)