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ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax    
Beginning balance, tax effect $ 782 $ 1,184
Beginning balance 6,582 3,887
Reclassifications into earnings, tax effect (43) (56)
Reclassification into earnings (net of tax effect) 142 184
Changes in value, tax effect 0  
Changes in value (net of tax effect) (1)  
Ending balance, tax effect 739 1,128
Ending balance 9,226 4,590
Accumulated Other Comprehensive Loss    
AOCI Attributable to Parent, Net of Tax    
Beginning balance (5,801) (7,130)
Ending balance (5,660) (6,946)
Pension and Other Benefits Liabilities    
AOCI Attributable to Parent, Net of Tax    
Beginning balance, AOCI before tax (6,624) (8,355)
Reclassifications into earnings 185 240
Changes in value 0  
Ending balance, AOCI before tax (6,439) (8,115)
Other    
AOCI Attributable to Parent, Net of Tax    
Beginning balance, AOCI before tax 41 41
Reclassifications into earnings 0 0
Changes in value (1)  
Ending balance, AOCI before tax $ 40 $ 41