ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax
Beginning balance, tax effect	$ 796	$ 782
Beginning balance	11,105	6,582
Reclassifications into earnings, tax effect	(14)	(15)
Reclassification into earnings (net of tax effect)	52	47
Ending balance, tax effect	782	767
Ending balance	11,151	6,260
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax
Beginning balance	(5,845)	(5,801)
Ending balance	(5,793)	(5,754)
Pension and Other Benefits Liabilities
AOCI Attributable to Parent, Net of Tax
Beginning balance, AOCI before tax	(6,681)	(6,624)
Reclassifications into earnings	66	62
Ending balance, AOCI before tax	(6,615)	(6,562)
Other
AOCI Attributable to Parent, Net of Tax
Beginning balance, AOCI before tax	40	41
Reclassifications into earnings	0	0
Ending balance, AOCI before tax	$ 40	$ 41