Pension And OPEB Plans (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) item	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined pension plans in which the Company participates | item			2
Percentage of plan attributed to regulated business			100.00%
Regulatory assets	$ 1,646,000		$ 1,646,000		$ 1,547,000
Oncor Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			2.91%
Expected return on plan assets			4.87%
Vistra Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			2.94%
Expected return on plan assets			4.66%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net loss	(8,000)	$ (13,000)	$ (24,000)	$ (39,000)
Cash contributions			3,000
Additional cash contributions	2,000		2,000
Additional cash contributions, next five years			$ 273,000
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net loss		(4,000)		(13,000)
Amortization of prior service cost		$ (4,000)		$ (12,000)
Discount rate			2.47%
Expected return on plan assets			5.61%
Cash contributions			$ 26,000
Additional cash contributions	$ 9,000		9,000
Additional cash contributions, next five years			$ 141,000