EMPLOYEE BENEFIT PLANS (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) noncallable_bond	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Assumed health care cost trend rate	6.50%
Ultimate trend rate	4.50%
Assumed return	6.10%
10 year actual rate of return	5.80%
Number of Aa-grade non-callable bonds used to develop the yield curve for rate used (noncallable bond) | noncallable_bond	848
Total fair value of trust other net liabilities	$ 11	$ 175
Retirement savings plan expense	$ 144	$ 133	$ 119
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
10 year actual rate of return	6.10%	5.50%	5.10%
Company contributions	$ 339	$ 335
Expected employer contribution next year	327
PBOP Plans
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 26	$ 10