Employee Benefit Plans (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Net regulatory asset		$ (1,329,000)	$ (1,076,000)
Number of OPEB plans | item		2
Rolling period		4 years
Percentage of gains and losses		25.00%
Second pool representation of total investments, percentage		24.00%
Cash contributions		$ 56,000	169,000	$ 76,000
Thrift Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions		$ 24,000	23,000	20,000
Oncor Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of corporate bonds | item		831
Pension And OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Net regulatory asset		$ 581,000	966,000
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average interest crediting rate assumption for Cash Balance Formula		3.00%
Net actuarial gain (loss)		$ 95,000	(302,000)	(367,000)
Actual returns on the plans' assets more than expected return on assets by		69,000
Amortization of net actuarial (loss)		(52,000)	(48,000)	(29,000)
Expected funding, 2022		5,000
Expected funding, 2022 to 2026		90,000
Cash contributions		21,000	134,000	41,000
Pension Plan [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial (loss)	$ (32,000)
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)		136,000	(20,000)	5,000
Actual returns on the plans' assets more than expected return on assets by		6,000
Amortization of net actuarial (loss)		$ (18,000)	(10,000)	(19,000)
Number of corporate bonds | item		307
Expected funding, 2022		$ 35,000
Expected funding, 2022 to 2026		177,000
Cash contributions		35,000	$ 35,000	$ 35,000
OPEB Plan [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial (loss)	$ 1,000
OPEB Plan [Member] | Gain Associated To Census Data, Health Care Claims And Trend Assumptions [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)		108,000
OPEB Plan [Member] | Gain Due To An Increase In Discount Rates [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)		36,000
OPEB Plan [Member] | Associated With Mortality And Other Demographic Assumption Changes [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)		$ (8,000)
Oncor Cash Balance Formula Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employee's contribution match by employer		100.00%
Percentage of employee's contribution matched 100% by employer		6.00%
Oncor Traditional Retirement Plan Formula Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employee's contribution match by employer		75.00%
Percentage of employee's contribution matched 100% by employer		6.00%