ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax
Beginning balance, tax effect	$ 1,184	$ 1,764	$ 1,549
Beginning balance	3,887	1,534	15,358
Changes in value, tax effect	(330)	(484)	384
Changes in value (net of tax effect)	1,089	1,593	(1,252)
Reclassification into earnings (net of tax effect)	240	315	203
Reclassifications into earnings, tax effect	(72)	(96)	(169)
Ending balance, tax effect	782	1,184	1,764
Ending balance	6,582	3,887	1,534
Deferred income tax expense in AOCI that will not be recognized until obligation is fully extinguished	755	755	755
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax
Beginning balance	(7,130)	(9,038)	(7,989)
Ending balance	(5,801)	(7,130)	(9,038)
Pension and Other Benefits Liabilities
AOCI Attributable to Parent, Net of Tax
Beginning balance, AOCI before tax	(8,355)	(10,843)	(9,563)
Changes in value	1,419	2,077	(1,652)
Reclassifications into earnings	312	411	372
Ending balance, AOCI before tax	(6,624)	(8,355)	(10,843)
Other
AOCI Attributable to Parent, Net of Tax
Beginning balance, AOCI before tax	41	41	25
Changes in value	0	0	16
Reclassifications into earnings	0	0	0
Ending balance, AOCI before tax	$ 41	$ 41	$ 41