EMPLOYEE BENEFIT PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	$ 396	$ 379	$ 575
Interest cost	916	913	692
Expected return on plan assets	(1,014)	(981)	(1,189)
Amortization of prior service cost	(3)	(4)	(4)
Amortization of net actuarial gain (loss)	1	1	2
Net periodic benefit cost	296	308	76
Less: transfer to regulatory account	39	25	254
Total expense recognized	335	333	330
PBOP Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	41	38	62
Interest cost	71	73	53
Expected return on plan assets	(139)	(132)	(130)
Amortization of prior service cost	3	3	7
Amortization of net actuarial gain (loss)	(23)	(19)	(40)
Special termination benefits	0	0	22
Net periodic benefit cost	$ (47)	$ (37)	$ (26)