Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY - Gains (Losses) Reclassified from AOCI (Details)

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SHAREOWNERS' EQUITY - Gains (Losses) Reclassified from AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest expense $ (212) $ (191) $ (407) $ (379)
Revenue 21,818 22,055 43,524 44,980
Income tax expense (460) (639) (883) (1,266)
Net Income 1,409 2,081 2,522 3,976
Investment income and other 137 131 255 300
Other expenses (1,859) (1,850) (3,827) (3,848)
Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net Income 6 16 6 42
Unrealized gain (loss) on foreign currency translation | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net Income     0 (3)
Other expenses     0 (3)
Unrealized gain (loss) on marketable securities | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income tax expense     0 1
Net Income     0 (2)
Investment income and other     0 (3)
Unrealized gain (loss) on cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest expense (2) (2) (3) (3)
Revenue 47 51 88 119
Income tax expense (10) (12) (20) (28)
Net Income 35 37 65 88
Unrecognized pension and postretirement benefit costs | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income tax expense 10 6 18 13
Net Income (29) (21) (59) (41)
Prior service costs | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Investment income and other $ (39) $ (27) $ (77) $ (54)