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 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest expense $ (230) $ (199) $ (637) $ (578)
Revenue 22,245 21,061 65,769 66,041
Income tax expense (371) (141) (1,254) (1,407)
Net Income 1,539 1,127 4,061 5,103
Investment income and other 155 124 410 424
Other expenses (1,727) (1,907) (5,554) (5,755)
Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net Income (7) 6 (1) 48
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 (1) (6) (4) (9)
Revenue 30 41 118 160
Income tax expense (7) (8) (27) (36)
Net Income 22 27 87 115
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 9 7 27 20
Net Income (29) (21) (88) (62)
Prior service costs | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Investment income and other $ (38) $ (28) $ (115) $ (82)