STOCKHOLDERS' EQUITY (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (8,977)	$ (10,855)
Total other comprehensive income (loss)	1,838	1,878	$ (609)
Ending Balance	(7,139)	(8,977)	(10,855)
Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	59	104	64
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(326)	(21)	104
Other Comprehensive Income (Loss) before Reclassifications, Tax	13	5	(23)
Other comprehensive income (loss) before reclassifications	(313)	(16)	81
Total other comprehensive income (loss)	(312)	(45)	40
Ending Balance	(253)	59	104
Cumulative Translation Adj
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,355)	(930)	(1,135)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(557)	(375)	227
Other Comprehensive Income (Loss) before Reclassifications, Tax	24	(40)	25
Other comprehensive income (loss) before reclassifications	(533)	(415)	252
Total other comprehensive income (loss)	(579)	(425)	205
Ending Balance	(1,934)	(1,355)	(930)
Pension and Other Postretire Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(7,334)	(9,559)	(8,781)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	2,611	2,094	(1,769)
Other Comprehensive Income (Loss) before Reclassifications, Tax	(630)	(464)	411
Other comprehensive income (loss) before reclassifications	1,981	1,630	(1,358)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	622	776	753
Reclassification from AOCI, Current Period, Tax	(146)	(181)	(173)
Amounts reclassified from accumulated other comprehensive income (loss)	476	595	580
Total other comprehensive income (loss)	2,457	2,225	(778)
Ending Balance	(4,877)	(7,334)	(9,559)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(347)	(470)	(394)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	638	155	(96)
Other Comprehensive Income (Loss) before Reclassifications, Tax	(87)	3	(1)
Other comprehensive income (loss) before reclassifications	551	158	(97)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(313)	(38)	30
Reclassification from AOCI, Current Period, Tax	34	3	(9)
Amounts reclassified from accumulated other comprehensive income (loss)	(279)	(35)	21
Total other comprehensive income (loss)	272	123	(76)
Ending Balance	(75)	(347)	(470)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	2	(38)	(54)
Reclassification from AOCI, Current Period, Tax	(1)	9	13
Amounts reclassified from accumulated other comprehensive income (loss)	1	(29)	(41)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cumulative Translation Adj
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	$ (46)	$ (10)	$ (47)