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ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax    
Beginning balance, tax effect $ 536 $ 796
Beginning balance 15,293 11,105
Changes in value, tax effect 0  
Changes in value (net of tax effect) 1  
Reclassifications into earnings, tax effect (12) (14)
Reclassification into earnings (net of tax effect) 40 52
Ending balance, tax effect 524 782
Ending balance 15,447 11,151
Accumulated Other Comprehensive Loss    
AOCI Attributable to Parent, Net of Tax    
Beginning balance (4,979) (5,845)
Ending balance (4,938) (5,793)
Pension and Other Benefit Liabilities    
AOCI Attributable to Parent, Net of Tax    
Beginning balance, AOCI before tax (5,557) (6,681)
Changes in value 0  
Reclassifications into earnings 52 66
Ending balance, AOCI before tax (5,505) (6,615)
Other    
AOCI Attributable to Parent, Net of Tax    
Beginning balance, AOCI before tax 42 40
Changes in value 1  
Reclassifications into earnings 0 0
Ending balance, AOCI before tax $ 43 $ 40