Quarterly report [Sections 13 or 15(d)]

SHAREOWNERS' EQUITY - Activity in Accumulated Other Comprehensive Income (Loss) (Details)

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SHAREOWNERS' EQUITY - Activity in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period     $ 16,255  
Balance at end of period $ 15,099   15,099  
Accumulated other comprehensive income (loss)        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at end of period (4,254) $ (4,175) (4,254) $ (4,175)
Unrealized gain (loss) on foreign currency translation        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period (1,209) (1,457) (1,058) (1,586)
Translation adjustment (75) 372 (226) 501
Balance at end of period (1,284) (1,085) (1,284) (1,085)
Translation adjustment, tax effect (5) 4 (10) 3
Unrealized gain (loss) on marketable securities        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period 0 0 0 (1)
Current period changes in fair value 0 0 0 1
Unrealized gain (loss) on cash flow hedges        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period (172) (48) (253) 91
Current period changes in fair value 29 (288) 91 (384)
Reclassification to earnings 14 (1) 33 (44)
Balance at end of period (129) (337) (129) (337)
Current period changes in fair value, tax effect 8 (91) 28 (121)
Reclassification to earnings, tax effect 4 (1) 10 (14)
Unrecognized pension and postretirement benefit costs        
Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Balance at beginning of period (2,869) (2,783) (2,897) (2,813)
Reclassification to earnings 28 30 56 60
Balance at end of period (2,841) (2,753) (2,841) (2,753)
Reclassification to earnings, tax effect $ 9 $ 10 $ 18 $ 19