EMPLOYEE BENEFIT PLANS - FUNDED STATUS (Details) - Qualified Defined Benefit [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Benefit obligation
Beginning of year	$ 2,934	$ 2,602
Service cost	52	46	$ 42
Interest cost	56	75	89
Actuarial (gain) loss	(171)	339
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(117)	(134)
End of year	2,758	2,934	2,602
Defined Benefit Plan Service Cost, including early-out expense	56	52
Plan assets at fair value
Beginning of year	2,488	2,239
Actual return on plan assets	224	383
Employer contributions	100	0
Defined Benefit Plan, Plan Assets, Benefits Paid	(117)	(134)
End of year	2,695	2,488	$ 2,239
Funded status (unfunded)	$ (63)	$ (446)
Percent funded	98.00%	85.00%
Accumulated benefit obligation	$ 2,700	$ 2,800
Defined Benefit Plan, Plan Assets, Benefits Paid	$ 117	$ 134