Annual report pursuant to Section 13 and 15(d)

SHAREOWNERS' EQUITY - Reclassification from AOCI (Details)

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SHAREOWNERS' EQUITY - Reclassification from AOCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other expenses $ (7,888) $ (8,097) $ (7,920)
Investment income (expense) and other 236 314 184
Interest expense (866) (787) (704)
Revenue 91,070 90,958 100,338
Income tax expense (1,660) (1,865) (3,277)
Net Income 5,782 6,708 11,548
Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Net Income (495) (213) 927
Unrealized Gain (Loss) on Foreign Currency Translation: | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other expenses 0 (8) (33)
Income tax expense 0 0 2
Net Income 0 (8) (31)
Unrealized Gain (Loss) on Marketable Securities, Net of Tax: | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Investment income (expense) and other 0 (3) (3)
Income tax expense 0 1 1
Net Income 0 (2) (2)
Unrealized Gain (Loss) on Cash Flow Hedges, Net of Tax: | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Investment income (expense) and other (1) (1) (1)
Interest expense (5) (10) (10)
Revenue 176 213 304
Income tax expense (41) (48) (70)
Net Income 129 154 223
Unrecognized Pension and Postretirement Benefit Costs, Net of Tax: | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income tax expense 195 111 (230)
Net Income (624) (357) 737
Prior service costs | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Investment income (expense) and other (154) (109) (94)
Remeasurement of benefit obligation | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Investment income (expense) and other (665) (351) 1,027
Curtailments and settlements of benefit obligations | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Investment income (expense) and other $ 0 $ (8) $ 34