Income Taxes - EEGH - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Regulatory liabilities	$ 1,290	$ 1,248
Other	649	629
Total deferred income tax assets	3,406	3,400
Deferred income tax liabilities:
Property-related items	(12,949)	(12,596)
Regulatory assets	(1,124)	(1,034)
Other	(378)	(491)
Total deferred income tax liabilities	(15,956)	(15,695)
Net deferred income tax liability	(12,628)	(12,437)
EEGH
Deferred income tax assets:
Federal and state carryforwards	27	22
Employee benefits	25	29
Intangibles	84	98
Derivatives and hedges	11	13
Deferred state income taxes	22	24
Regulatory liabilities	10	1
Other	2	3
Total deferred income tax assets	181	190
Deferred income tax liabilities:
Property-related items	(410)	(343)
Partnership investments	(211)	(158)
Debt exchange	(47)	(50)
Regulatory assets	(6)	(1)
Other	(4)	(4)
Total deferred income tax liabilities	(678)	(556)
Net deferred income tax liability	$ (497)	$ (366)