ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 5	$ 3	$ 20	$ 8
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	(23)	8	(74)
AOCI Tax, Attributable to Parent	115	104	115	104	$ 116	$ 122	$ 98	$ 83
Accumulated Other Comprehensive Income (Loss), Net of Tax	(360)	(328)	(360)	(328)	(365)	(388)	(308)	(262)
Reclassification from AOCI, Current Period, Tax	(1)	0	(5)	1
Income tax effect	0	6	(2)	20
Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2	2	9	6
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	(28)	9	(92)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(62)	(90)	(62)	(90)	(64)	(80)	(64)	(4)
AOCI Employee Benefit Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	3	1	11	2
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(308)	(250)	(308)	(250)	(311)	(319)	(251)	(252)
AOCI - Interest Rate Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	5	(1)	18
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 10	$ 12	$ 10	$ 12	$ 10	$ 11	$ 7	$ (6)