EMPLOYEE BENEFIT PLANS - FUNDED STATUS (Details) - Qualified Defined Benefit [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Benefit obligation
Beginning of year	$ 2,079	$ 2,758
Service cost	29	45	$ 52
Actuarial (gain) loss	83	(628)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(116)	(172)
End of year	2,183	2,079	2,758
Defined Benefit Plan Service Cost, including early-out expense	29	46
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	0	9
Defined Benefit Interest Cost, PBO	108	66
Plan assets at fair value
Beginning of year	1,894	2,695
Actual return on plan assets	245	(629)
Defined Benefit Plan, Plan Assets, Benefits Paid	(116)	(172)
End of year	2,023	1,894	$ 2,695
Funded status (unfunded)	$ (160)	$ (185)
Percent funded	93.00%	91.00%
Accumulated benefit obligation	$ 2,100	$ 2,000
Defined Benefit Plan, Plan Assets, Benefits Paid	$ 116	$ 172