Oncor Electric Delivery 10-K 28 Feb 23 2022 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 28, 2023	Dec. 31, 2021	Dec. 31, 2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	333-100240
Entity Registrant Name	Oncor Electric Delivery Company LLC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-2967830
Entity Address, Address Line One	1616 Woodall Rodgers Fwy.
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75202
City Area Code	214
Local Phone Number	486-2000
Title of 12(b) Security	None
Trading Symbol	None
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Capital account, units outstanding	635,000,000	635,000,000	635,000,000	635,000,000
Entity Public Float	$ 0
Entity Common Stock, Shares Outstanding		0
Entity Central Index Key	0001193311
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Auditor Name	Deloitte & Touche LLP
Auditor Firm ID	34
Auditor Location	Dallas, Texas
ICFR Auditor Attestation Flag	true
Oncor Electric Delivery Holdings Company LLC [Member]
Entity Outstanding Membership Interests		80.25%
Texas Transmission Investment LLC [Member]
Entity Outstanding Membership Interests		19.75%

Statements Of Consolidated Inco

Statements Of Consolidated Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements Of Consolidated Income [Abstract]
Operating revenues (Note 3)	$ 5,243	$ 4,764	$ 4,511
Operating expenses:
Wholesale transmission service	1,162	1,039	975
Operation and maintenance (Note 10)	1,055	983	925
Depreciation and amortization	904	820	786
Provision in lieu of income taxes (Notes 1, 4 and 10)	201	165	148
Taxes other than amounts related to income taxes	561	555	538
Total operating expenses	3,883	3,562	3,372
Operating income	1,360	1,202	1,139
Other deductions and (income) - net (Note 11)	20	31	33
Nonoperating benefit in lieu of income taxes (Note 4)	(10)	(12)	(12)
Interest expense and related charges (Note 11)	445	413	405
Net income	$ 905	$ 770	$ 713

Statements Of Consolidated Comp

Statements Of Consolidated Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements Of Consolidated Comprehensive Income [Abstract]
Net income	$ 905	$ 770	$ 713
Other comprehensive income (loss):
Cash flow hedges – derivative value net gain (loss) recognized in net income (net of tax expense (benefit) of $1, $1 and ($5)) (Notes 1 and 8)	(2)	(3)	21
Defined benefit pension plans (net of tax expense of $0, $0 and $0) (Notes 8 and 9)	(33)	17	9
Total other comprehensive income (loss)	(31)	20	(12)
Comprehensive income	$ 874	$ 790	$ 701

Statements Of Consolidated Co_2

Statements Of Consolidated Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements Of Consolidated Comprehensive Income [Abstract]
Cash flow hedges - derivative value net gain (loss) recognized in net income, tax expense (benefit)	$ 1	$ 1	$ (5)
Defined benefit pension plans- net tax expense	$ 0	$ 0	$ 0

Statements Of Consolidated Cash

Statements Of Consolidated Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows - operating activities:
Net income	$ 905	$ 770	$ 713
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization, including regulatory amortization	985	901	866
Provision in lieu of deferred income taxes - net	41	68	32
Other - net	(14)	(1)	(1)
Changes in operating assets and liabilities:
Accounts receivable - trade	(138)	37	(78)
Inventories	(32)	(27)	4
Accounts payable - trade	45	27	(29)
Regulatory assets – deferred revenues (Note 2)	120	(46)	33
Regulatory assets – self-insurance reserve	(198)	(118)	(14)
Other - assets	16	(9)	(57)
Other - liabilities	137	56	56
Cash provided by operating activities	1,867	1,658	1,525
Cash flows - financing activities:
Issuances of long-term debt (Note 6)	3,950	2,090	1,810
Repayment of long-term debt (Note 6)	(2,732)	(1,290)	(1,164)
Net (decrease) increase in short-term borrowings (Note 5)	(17)	145	24
Capital contributions from members (Note 8)	425	705	788
Distributions to members (Note 8)	(425)	(839)	(356)
Debt discount, premium, financing and reacquisition costs – net	(31)	(9)	(54)
Cash provided by financing activities	1,170	802	1,048
Cash flows - investing activities:
Capital expenditures (Note 11)	(3,049)	(2,497)	(2,540)
Expenditures for third party in joint project	(2)	(67)	(96)
Reimbursements from third party in joint project	6	99	66
Proceeds from sales of non-utility properties	21
Other - net	31	32	20
Cash used in investing activities	(2,993)	(2,433)	(2,550)
Net change in cash, cash equivalents and restricted cash	44	27	23
Cash, cash equivalents and restricted cash – beginning balance	54	27	4
Cash, cash equivalents and restricted cash – ending balance	$ 98	$ 54	$ 27

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 10	$ 11
Restricted cash, current (Note 1)	16	13
Trade accounts receivable - net (Note 11)	884	738
Amounts receivable from members related to income taxes (Note 10)		6
Materials and supplies inventories - at average cost	204	171
Prepayments and other current assets	109	101
Total current assets	1,223	1,040
Restricted cash, noncurrent (Note 1)	72	30
Investments and other property (Note 11)	137	155
Property, plant and equipment - net (Note 11)	25,203	22,954
Goodwill (Notes 1 and 11)	4,740	4,740
Regulatory assets (Note 2)	1,502	1,547
Operating lease ROU and other assets (Notes 3 and 7)	161	167
Total assets	33,038	30,633
Current liabilities:
Short-term borrowings (Note 5)	198	215
Long-term debt due currently (Note 6)	100	882
Trade accounts payable (Note 10)	536	441
Amounts payable to members related to income taxes (Note 10)	45	24
Accrued taxes other than amounts related to income	277	286
Accrued interest	97	89
Operating lease and other current liabilities (Note 7)	330	283
Total current liabilities	1,583	2,220
Long-term debt, less amounts due currently (Note 6)	11,128	9,150
Liability in lieu of deferred income taxes (Notes 1, 4 and 10)	2,182	2,065
Regulatory liabilities (Note 2)	3,014	2,876
Employee benefit obligations (Note 9)	1,394	1,503
Operating lease and other obligations (Notes 3 and 11)	275	231
Total liabilities	19,576	18,045
Commitments and contingencies (Note 7)
Membership interests (Note 8):
Capital account – number of units outstanding 2022 and 2021 – 635,000,000	13,624	12,719
Accumulated other comprehensive loss	(162)	(131)
Total membership interests	13,462	12,588
Total liabilities and membership interests	$ 33,038	$ 30,633

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Feb. 28, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Consolidated Balance Sheets [Abstract]
Capital account, units outstanding	635,000,000	635,000,000	635,000,000	635,000,000

Statements Of Consolidated Memb

Statements Of Consolidated Membership Interests - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Capital account:
Balance at beginning of period	$ 12,719	$ 12,083	$ 10,938
Net income	905	770	713
Capital contributions from members (Note 8)	425	705	788
Distributions to members (Note 8)	(425)	(839)	(356)
Other Comprehensive Income (Loss), Net of Tax	(31)	20	(12)
Balance at end of period	13,624	12,719	12,083
Membership Interest [Abstract]
Membership Equity	13,462	12,588	11,932
Accumulated Other Comprehensive Income (Loss) [Member]
Capital account:
Balance at beginning of period	(131)	(151)	(139)
Balance at end of period	(162)	(131)	(151)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Capital account:
Other Comprehensive Income (Loss), Net of Tax	2	3	(21)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Capital account:
Other Comprehensive Income (Loss), Net of Tax	$ (33)	$ 17	$ 9

Statements Of Consolidated Me_2

Statements Of Consolidated Membership Interests (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements Of Consolidated Membership Interest [Abstract]
Interests outstanding	635,000,000	635,000,000	635,000,000
Net effects of cash flow hedges, tax expense	$ 1	$ 1	$ (5)
Defined benefit pension plans- net tax expense	$ 0	$ 0	$ 0

Description Of Business And Sig

Description Of Business And Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Description Of Business And Significant Accounting Policies [Abstract]
DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES	1. DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES Description of Business References in this report to “we,” “our,” “us” and “the company” are to Oncor and/or its subsidiaries as apparent in the context. See “Glossary” for the definition of terms and abbreviations. We are a regulated electricity transmission and distribution company that provides the essential service of delivering electricity safely, reliably and economically to end-use consumers through our electrical systems, as well as providing transmission grid connections to merchant generation facilities and interconnections to other transmission grids in Texas. Our transmission and distribution rates are regulated by the PUCT and certain cities, and in certain limited instances, by the FERC . We are not a seller of electricity, nor do we purchase electricity for resale. We are a direct, majority-owned subsidiary of Oncor Holdings, which is indirectly and wholly owned by Sempra. Oncor Holdings owns 80.25 % of our membership interests and Texas Transmission owns 19.75 % of our membership interests. We are managed as an integrated business; consequently, there are no separate reportable business segments. Ring-Fencing Measures Since 2007, various ring-fencing measures have been taken to enhance our credit quality and the separateness between the Oncor Ring-Fenced Entities and entities with ownership interests in Oncor or Oncor Holdings. These ring-fencing measures serve to mitigate the Oncor Ring-Fenced Entities’ credit exposure to owners of Oncor and Oncor Holdings, and to reduce the risk that the assets and liabilities of the Oncor Ring-Fenced Entities would be substantively consolidated with the assets and liabilities of any direct or indirect owners of Oncor and Oncor Holdings in connection with a bankruptcy of any such entities. These measures include the November 2008 sale of 19.75 % of Oncor’s equity interests to Texas Transmission. In March 2018, Sempra indirectly acquired Oncor Holdings after obtaining various approvals, including PUCT approval through the Sempra Order, which outlines certain ring-fencing measures, governance mechanisms and restrictions that apply after the Sempra Acquisition. As a result of these ring-fencing measures, Sempra does not control Oncor, and the ring-fencing measures limit Sempra’s ability to direct the management, policies and operations of Oncor, including the deployment or disposition of Oncor’s assets, declarations of dividends, strategic planning and other important corporate issues and actions. None of the assets of the Oncor Ring-Fenced Entities are available to satisfy the debt or obligations of any Sempra entity or any other direct or indirect owner of Oncor or Oncor Holdings. The assets and liabilities of the Oncor Ring-Fenced Entities are separate and distinct from those of any Sempra entities and any other direct or indirect owner of Oncor or Oncor Holdings. We do not bear any liability for debt or contractual obligations of Sempra and its affiliates or any other direct or indirect owner of Oncor or Oncor Holdings, and vice versa. Accordingly, our operations are conducted, and our cash flows are managed, independently from Sempra and its affiliates and any other direct or indirect owner of Oncor or Oncor Holdings. Oncor is a limited liability company governed by a board of directors, not its members. The Sempra Order and our Limited Liability Company Agreement require that the board of directors of Oncor consist of thirteen members, constituted as follows:  seven Disinterested Directors, who (i) shall be independent directors in all material respects under the rules of the New York Stock Exchange in relation to Sempra or its subsidiaries and affiliated entities and any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, and (ii) shall have no material relationship with Sempra or its subsidiaries or affiliated entities or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, currently or within the previous ten years ;  two members designated by Sempra (through Oncor Holdings);  two members designated by Texas Transmission; and  two current or former officers of Oncor (each, an Oncor Officer Director), currently Robert S. Shapard and E. Allen Nye, Jr., who are our Chairman of our board of directors and Chief Executive, respectively. Until March 9, 2028, in order for a current or former officer of Oncor to be eligible to serve as an Oncor Officer Director, the officer cannot have worked for Sempra or any of its subsidiaries or affiliated entities (excluding Oncor Holdings and Oncor) or any other entity with a direct or indirect ownership interest in Oncor or Oncor Holdings in the ten-year period prior to the date on which the officer first became employed by Oncor. Oncor Holdings, at the direction of STIH, has the right to nominate and/or seek the removal of the Oncor Officer Directors, subject to approval by a majority of the Oncor board of directors. In addition, the Sempra Order provides that Oncor’s board of directors cannot be overruled by the board of directors of Sempra or any of its subsidiaries on dividend policy, the issuance of dividends or other distributions (except for contractual tax payments), debt issuance, capital expenditures, operation and maintenance expenditures, management and service fees, and appointment or removal of members of the board of directors, provided that certain actions may also require the additional approval of the Oncor Holdings board of directors. The Sempra Order also provides that any changes to the size, composition, structure or rights of the board of directors must first be approved by the PUCT. In addition, if Sempra acquires Texas Transmission’s interest in Oncor, the two board of director positions on Oncor’s board of directors that Texas Transmission is entitled to appoint will be eliminated and the size of Oncor’s board of directors will be reduced by two . Additional regulatory commitments, governance mechanisms and restrictions provided in the Sempra Order and our Limited Liability Company Agreement to ring-fence Oncor from its owners include, among others:  A majority of the Disinterested Directors of Oncor and the directors designated by Texas Transmission that are present and voting (of which at least one must be present and voting) must approve any annual or multi-year budget if the aggregate amount of capital expenditures or operating and maintenance expenditures in such budget is more than a 10 % increase or decrease from the corresponding amounts of such expenditures in the budget for the preceding fiscal year or multi-year period, as applicable;  Oncor may not pay any dividends or make any other distributions (except for contractual tax payments) if a majority of its Disinterested Directors or either of the two directors appointed by Texas Transmission determines that it is in the best interests of Oncor to retain such amounts to meet expected future requirements;  At all times, Oncor will remain in compliance with the debt-to-equity ratio established by the PUCT from time to time for ratemaking purposes, and Oncor will not pay dividends or other distributions (except for contractual tax payments), if that payment would cause its debt-to-equity ratio to exceed the debt-to-equity ratio approved by the PUCT;  If the credit rating on Oncor’s senior secured debt by any of the three major rating agencies falls below BBB (or the equivalent), Oncor will suspend dividends and other distributions (except for contractual tax payments), unless otherwise allowed by the PUCT;  Without the prior approval of the PUCT, neither Sempra nor any of its affiliates (excluding Oncor) will incur, guaranty or pledge assets in respect of any indebtedness that is dependent on the revenues of Oncor in more than a proportionate degree than the other revenues of Sempra or on the membership interests of Oncor, and there will be no debt at STH or STIH at any time following the closing of the Sempra Acquisition;  Neither Oncor nor Oncor Holdings will lend money to, borrow money from or share credit facilities with Sempra or any of its affiliates (other than Oncor subsidiaries), or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings;  There must be maintained certain “separateness measures” that reinforce the legal and financial separation of Oncor from its owners, including a requirement that dealings between Oncor, Oncor Holdings and their subsidiaries with Sempra, any of Sempra’s other affiliates or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, must be on an arm’s-length basis, limitations on affiliate transactions, separate recordkeeping requirements and a prohibition on Sempra or its affiliates or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings pledging Oncor assets or membership interests for any entity other than Oncor; and  Until March 9, 2023, Sempra must hold indirectly at least 51 % of the ownership interests in Oncor and Oncor Holdings, unless otherwise specifically authorized by the PUCT. Basis of Presentation Our consolidated financial statements have been prepared in accordance with GAAP governing rate-regulated operations. All dollar amounts in the financial statements and tables in the notes are stated in U.S. dollars in millions unless otherwise indicated. Use of Estimates Preparation of our financial statements requires management to make estimates and assumptions about future events that affect the reporting of assets and liabilities at the balance sheet dates and the reported amounts of revenue and expense, including fair value measurements. In the event estimates and/or assumptions prove to be different from actual amounts, adjustments are made in subsequent periods to reflect more current information. No material adjustments were made to previous estimates or assumptions during the current year. Revenue Recognition Oncor’s revenue is billed under tariffs approved by the PUCT and the majority of revenues are related to providing electric delivery service to consumers. Tariff rates are designed to recover the cost of providing electric delivery service including a reasonable rate of return on invested capital. Revenues are generally recognized when the underlying service has been provided in an amount prescribed by the related tariff. See Note 3 for additional information regarding revenues. Interest Rate Derivatives, Hedge Accounting and Mark-to-Market Accounting We are exposed to interest rates primarily as a result of our current and expected use of financing. We may, from time to time, utilize interest rate derivative instruments typically designated as cash flow hedges, to lock in interest rates in anticipation of future financings. We may designate an interest rate derivative instrument as a cash flow hedge if it effectively converts anticipated cash flows associated with interest payments to a fixed dollar amount. Designating interest rate derivative instruments as cash flow hedges is dependent on the business context in which the instrument is being used, the effectiveness of the instrument in offsetting the risk that the future cash flows of interest payments may vary, and other criteria. In accounting for cash flow hedges, derivative assets and liabilities are recorded on the balance sheet at fair value with an offset to other comprehensive income (loss). Amounts remain in accumulated other comprehensive income (loss) and are reclassified into net income as the interest expense on the related debt affects net income. T he fair value of an interest rate derivative instrument is recognized on the balance sheet as a derivative asset or liability and changes in the fair value are recognized in net income if the criteria for cash flow hedge accounting are not met or if the instrument is not designated as a cash flow hedge. This recognition is referred to as “mark-to-market” accounting. Impairment of Long-Lived Assets and Goodwill We evaluate long-lived assets (including intangible assets with finite lives) for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We also evaluate goodwill for impairment annually on October 1 and whenever events or changes in circumstances indicate that an impairment may exist. The determination of the existence of these and other indications of impairment involves judgments that are subjective in nature and may require the use of estimates in forecasting future results and cash flows. For our annual goodwill impairment testing, we generally have the option to directly perform a quantitative assessment or first make a qualitative assessment of whether it is more likely than not that our enterprise fair value is less than our enterprise carrying value before applying the quantitative assessment. If we elect to perform the qualitative assessment, we evaluate relevant events and circumstances, including but not limited to, macroeconomic conditions, industry and market considerations, cost factors and our overall financial performance. If, after assessing these qualitative factors, we determine that it is more-likely-than-not that our estimated enterprise fair value is less than our enterprise carrying book value, then we perform a quantitative assessment. If, after performing the quantitative assessment, we determine that goodwill is impaired, we record the amount of goodwill impairment as the excess of enterprise carrying book value over estimated enterprise fair value, not to exceed the carrying amount of goodwill. For our annual goodwill impairment testing in 2022, we elected to perform a quantitative assessment of goodwill as of October 1, 2022. We estimated our enterprise fair value by weighting results from a market-based approach and an income-based approach. Key assumptions in the valuation methodologies for goodwill included terminal value, discount rates, and comparable multiples from publicly traded companies in our industry. Based on our analysis, we determined that our estimated enterprise fair value was in excess of our enterprise carrying book value, indicating none of our goodwill was impaired and no impairment was recognized in 2022. For our annual goodwill impairment testing in 2021, w e elected to perform a qualitative assessment of goodwill as of October 1, 2021 and concluded that an estimated enterprise fair value was more likely than not greater than our enterprise carrying book value. As a result , no additional testing for impairment was required and n o impairment was recognized in 2021. Goodwill totaling $ 4.740 billion was reported on our balance sheet at both December 31, 2022 and 2021. Provision in Lieu of Income Taxes Our tax sharing agreement with Oncor Holdings, Texas Transmission and STH provides for the calculation of amounts related to income taxes for each of Oncor Holdings and Oncor substantially as if these entities were taxed as corporations and requires payments to the members determined on that basis (without duplication for any income taxes paid by a subsidiary of Oncor Holdings). We are a partnership for U.S. federal income tax purposes. Accordingly, while partnerships are not subject to income taxes, in consideration of the presentation of our financial statements as an entity subject to cost-based regulatory rate-setting processes, with such costs historically including income taxes, the financial statements present amounts determined under the tax sharing agreement as “provision in lieu of income taxes” and “liability in lieu of deferred income taxes”. Such amounts are determined in accordance with the provisions of the accounting guidance for income taxes and accounting standards that provide interpretive guidance for accounting for uncertain tax positions and thus differences between the book and tax bases of assets and liabilities are accounted for as if we were a stand-alone corporation. In the event such amounts are not paid under the tax sharing agreement, it is probable that this regulatory liability will continue to be included in Oncor’s rate setting processes. We classify any interest and penalties expense related to uncertain tax positions as current provision in lieu of income taxes as discussed in Note 4. Defined Benefit Pension Plans and OPEB Plans We have liabilities under pension plans that offer benefits based on either a traditional defined benefit formula or a cash balance formula and OPEB Plans that offer certain health care and life insurance benefits to eligible employees and their eligible dependents upon the retirement of such employees. Costs of pension and OPEB Plans are dependent on numerous factors, assumptions and estimates. See Note 9 for additional information regarding pension and OPEB Plans. System of Accounts Our accounting records have been maintained in accordance with the FERC Uniform System of Accounts as adopted by the PUCT. Property, Plant and Equipment Property, plant and equipment is stated at original cost. The cost of self-constructed property additions includes materials and both direct and indirect labor and applicable overhead and AFUDC. D epreciation of property, plant and equipment is calculated on a straight-line basis over the estimated service lives of the properties based on depreciation rates approved by the PUCT. As is common in the industry, depreciation expense is recorded using composite depreciation rates that reflect blended estimates of the lives of major asset groups as compared to depreciation expense calculated on a component asset-by-asset basis. Depreciation rates include plant removal costs as a component of depreciation expense, consistent with regulatory treatment. Actual removal costs incurred are charged to accumulated depreciation. Accrued removal costs in excess of incurred removal costs are reclassified as a regulatory liability to retire assets in the future. Regulatory Assets and Liabilities We are subject to rate regulation and our financial statements reflect regulatory assets and liabilities in accordance with accounting standards related to the effect of certain types of regulation. Regulatory assets and liabilities represent probable future revenues that will be recovered from or refunded to customers through the ratemaking process based on PURA and/or the PUCT’s orders, precedents or substantive rules. Rate regulation is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital subject to PUCT review for reasonableness. Regulatory decisions can have an impact on the recovery of costs, the rate earned on invested capital and the timing and amount of assets to be recovered by rates. See Note 2 for more information regarding regulatory assets and liabilities. Franchise Taxes Franchise taxes are assessed to us by local governmental bodies, based on kWh delivered and are a principal component of taxes other than amounts related to income taxes as reported in the income statement. Franchise taxes are not a “pass through” item. The rates we charge customers are intended to recover the franchise taxes, but we are not acting as an agent to collect the taxes from customers. Allowance for Funds Used During Construction AFUDC is a regulatory cost accounting procedure whereby both interest charges on borrowed funds and a return on equity capital used to finance construction are included in the recorded cost of utility plant and equipment being constructed. AFUDC is capitalized on all projects involving construction periods lasting greater than thirty days. The interest portion of capitalized AFUDC is accounted for as a reduction to interest expense and the equity portion of capitalized AFUDC is accounted for as other income. See Note 11 for detail of amounts reducing interest expense and increasing other income. Cash, Cash Equivalents and Restricted Cash For purposes of reporting cash and cash equivalents, highly liquid investments with original maturities of three months or less at the date of purchase are considered to be cash equivalents. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the Consolidated Balance Sheets to the sum of such amounts reported on the Statements of Consolidated Cash Flows: At December 31, 2022 2021 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 10 $ 11 Restricted cash, current (a) 16 13 Restricted cash, noncurrent (a) 72 30 Total cash, cash equivalents and restricted cash on the Statements of Consolidated Cash Flows $ 98 $ 54 ____________ (a) Restricted cash represents amounts deposited with Oncor for customer advances for construction that are subject to return in accordance with PUCT rules, ERCOT requirements or our tariffs relating to generation interconnection and construction and/or extension of electric delivery system facilities. We maintain these amounts in a separate escrow account. Fair Value of Nonderivative Financial Instruments The carrying amounts for financial assets classified as current assets and the carrying amounts for financial liabilities classified as current liabilities approximate fair value due to the short maturity of such instruments. The fair values of other financial instruments, for which carrying amounts and fair values have not been presented, are not materially different than their related carrying amounts. The following discussion of fair value accounting standards applies primarily to our determination of the fair value of assets in the pension plans’ and OPEB Plans’ trusts (see Note 9) and long-term debt (see Note 6). Accounting standards related to the determination of fair value define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We use a “mid-market” valuation convention (the mid-point price between bid and ask prices) as a practical expedient to measure fair value for the majority of our assets and liabilities subject to fair value measurement on a recurring basis. We primarily use the market approach for recurring fair value measurements and use valuation techniques to maximize the use of observable inputs and minimize the use of unobservable inputs. We categorize our assets and liabilities recorded at fair value based upon the following fair value hierarchy:  Level 1 valuations use quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date. An active market is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.  Level 2 valuations use inputs that, in the absence of actively quoted market prices, are observable for the asset or liability, either directly or indirectly. Level 2 inputs include: (a) quoted prices for similar assets or liabilities in active markets, (b) quoted prices for identical or similar assets or liabilities in markets that are not active, (c) inputs other than quoted prices that are observable for the asset or liability such as interest rates and yield curves observable at commonly quoted intervals and (d) inputs that are derived principally from or corroborated by observable market data by correlation or other means. Our Level 2 valuations utilize over-the-counter broker quotes, quoted prices for similar assets or liabilities that are corroborated by correlations or other mathematical means and other valuation inputs.  Level 3 valuations use unobservable inputs for the asset or liability. Unobservable inputs are used to the extent observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. We use the most meaningful information available from the market combined with internally developed valuation methodologies to develop our best estimate of fair value. We utilize several different valuation techniques to measure the fair value of assets and liabilities, relying primarily on the market approach of using prices and other market information for identical and/or comparable assets and liabilities for those items that are measured on a recurring basis. The fair value of certain investments is measured using the NAV per share as a practical expedient. Such investments measured at NAV are not required to be categorized within the fair value hierarchy. Contingencies Our financial results may be affected by judgments and estimates related to contingencies. For loss contingencies, we accrue the loss if an event has occurred on or before the balance sheet date, and:  information available through the date we file our financial statements indicates it is probable that a loss has been incurred, given the likelihood of uncertain future events; and  the amount of the loss can be reasonably estimated. We do not accrue contingencies that might result in gains. We continuously assess contingencies for litigation claims, environmental remediation and other events. See Note 7 for a discussion of contingencies.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2022
Regulatory Matters [Abstract]
REGULATORY MATTERS	2. REGULATORY MATTERS Regulatory Assets and Liabilities We are subject to rate regulation and our financial statements reflect regulatory assets and liabilities in accordance with accounting standards related to the effect of certain types of regulation. Regulatory assets and liabilities represent probable future revenues that will be recovered from or refunded to customers through the ratemaking process based on PURA and/or the PUCT’s orders, precedents or substantive rules. Rate regulation is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital subject to PUCT review for reasonableness. Regulatory decisions can have an impact on the recovery of costs, the rate earned on invested capital and the timing and amount of assets to be recovered by rates. Components of our regulatory assets and liabilities and their remaining recovery periods as of December 31, 2022 are provided in the table below. Amounts not earning a return through rate regulation are noted. Remaining Rate Recovery/Amortization Period at At December 31, December 31, 2022 2022 2021 Regulatory assets: Employee retirement liability (a)(b)(c) To be determined $ 157 $ 328 Employee retirement costs being amortized 5 years 158 193 Employee retirement costs incurred since the last base rate review period (b) To be determined 91 99 Self-insurance reserve (primarily storm recovery costs) being amortized 5 years 181 223 Self-insurance reserve incurred since the last base rate review period (primarily storm related) (b) To be determined 571 373 Debt reacquisition costs Lives of related debt 15 19 Under-recovered AMS costs 5 years 107 128 Energy efficiency program performance bonus (a) 1 year or less 28 31 Wholesale distribution substation service (b) To be determined 97 75 Unrecovered expenses related to COVID-19 (b) To be determined 37 35 Recoverable deferred income taxes Various 25 16 Uncollectible payments from REPs (b) To be determined 8 9 Other regulatory assets Various 27 18 Total regulatory assets 1,502 1,547 Regulatory liabilities: Estimated net removal costs Lives of related assets 1,431 1,348 Excess deferred taxes Primarily over lives of related assets 1,375 1,442 Over-recovered wholesale transmission service expense (a) 1 year or less 101 7 Unamortized gain on reacquisition of debt Lives of related debt 25 26 Employee retirement costs over-recovered since last base rate review period (b) To be determined 60 39 Other regulatory liabilities Various 22 14 Total regulatory liabilities 3,014 2,876 Net regulatory assets (liabilities) $ ( 1,512 ) $ ( 1,329 ) ____________ (a) Not earning a return in the regulatory rate-setting process. (b) Recovery/refund is specifically authorized by statute or by the PUCT, subject to reasonableness review. (c) Represents unfunded liabilities recorded in accordance with pension and OPEB accounting standards. Base Rate Review (PUCT Docket No. 53601) In May 2022, following an extension approved by the PUCT, we filed a request for a base rate review with the PUCT and the 209 cities in our service territory that have retained original jurisdiction over rates. The base rate review test year is based on calendar year 2021 results with certain adjustments. The base rate review includes a request for an average increase over test year adjusted annualized revenue of 4.5 %, and, if approved as requested, would result in an aggregate annualized revenue increase of approximately $ 251 million. The base rate review also requests a revised regulatory capital structure ratio of 55 % debt to 45 % equity and an authorized return on equity of 10.3 %. Our current authorized regulatory capital structure ratio is 57.5 % debt to 42.5 % equity and our current authorized return on equity is 9.8 %. A hearing on the merits was held before SOAH from September 26, 2022 to October 4, 2022, and a PFD was issued by the SOAH administrative law judges to the PUCT for its consideration on December 28, 2022. The PFD initially recommended a $ 397 million reduction to our requested annualized base rate revenue requirement, which would be a $ 146 million reduction to test year adjusted annualized revenue. The PFD also included recommendations for a return on equity of 9.3 %, continuation of our existing 57.5 % debt to 42.5 % equity capital structure, disallowances of various items included in rate base, as well as other modifications to our base rate review requests. On January 19, 2023, PUCT Staff filed an errata memorandum indicating that the number run model relied upon by the PFD included a $ 680 million accumulated depreciation reallocation error. On February 9, 2023, the SOAH administrative law judges filed an exceptions letter indicating that they agreed that this and certain other number-running corrections and any associated flow-through adjustments should be adopted . We believe the impact of the number-running errors results in an unwarranted reduction to our rate base that drives $ 51 million of the proposed annualized revenue decrease reflected in the PFD. We further believe that the correction of the accumulated depreciation reallocation number running error will revise the PFD’s recommendation to a $ 346 million reduction to our requested annualized base rate revenue, which would be a $ 95 million decrease to our test year adjusted annualized revenue. On January 24, 2023, we filed Exceptions to the Proposal for Decision (Exceptions) explaining why we disagree with certain recommendations of the SOAH administrative law judges in the PFD. Other intervening parties in the proceeding filed Exceptions as well, and on February 1, 2023, we filed a Reply to Exceptions addressing points in those intervenor Exceptions . Resolution of the base rate review requires issuance of a final order by the PUCT, which is expected around the end of the first quarter of 2023, with new rates going into effect following approval of tariffs reflecting that order. We cannot predict whether or to what extent our requests in the base rate review will be approved or what the ultimate impact of the proceeding will be on our results of operations, financial condition, liquidity, or cash flows. DCRF Good Cause Exception Request (PUCT Docket No. 54648) On February 13, 2023, we filed an application with the PUCT requesting that it grant certain exceptions to the DCRF application filing requirements, including extending the filing deadline, due to the timing of our pending base rate review. We requested that our April 8, 2023 deadline for filing a DCRF application for eligible distribution investments placed into service during 2022 be extended until at least May 31, 2023.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2022
Revenues [Abstract]
REVENUES	3. REVENUES General Our revenue is billed monthly under tariffs approved by the PUCT and the majority of revenues are related to providing electric delivery service to consumers. Tariff rates are designed to recover the cost of providing electric delivery service to customers including a reasonable rate of return on invested capital. As the volumes delivered can be directly measured, our revenues are recognized when the underlying service has been provided in an amount prescribed by the related tariff. We recognize revenue in the amount that we have the right to invoice. Substantially all of our revenues are from contracts with customers except for alternative revenue program revenues discussed below. Reconcilable Tariffs The PUCT has designated certain tariffs (primarily TCRF and EECRF) as reconcilable, which means the differences between amounts billed under these tariffs and the related incurred costs are deferred as either regulatory assets or regulatory liabilities. Accordingly, at prescribed intervals, future tariffs are adjusted to either repay regulatory liabilities or collect regulatory assets. Alternative Revenue Program The PUCT has implemented an incentive program allowing us to earn energy efficiency program performance bonuses by exceeding PURA-mandated energy efficiency program targets. This incentive program and the related performance bonus revenues are considered an “alternative revenue program” under GAAP. Annual performance bonuses are recognized as revenue when approved by the PUCT, typically in the third or fourth quarter each year. The PUCT approved annual energy efficiency program performance bonuses for us of $ 28 million and $ 31 million that we recognized in revenues in 2022 and 2021, respectively. Disaggregation of Revenues The following table reflects electric delivery revenues disaggregated by tariff: Years Ended December 31, 2022 2021 2020 Operating revenues Revenues contributing to earnings: Distribution base revenues $ 2,447 $ 2,217 $ 2,156 Transmission base revenues (TCOS revenues) Billed to third-party wholesale customers 944 879 803 Billed to REPs serving Oncor distribution customers, through TCRF 528 479 446 Total transmission base revenues 1,472 1,358 1,249 Other miscellaneous revenues 112 104 87 Total revenues contributing to earnings 4,031 3,679 3,492 Revenues collected for pass-through expenses: TCRF – third-party wholesale transmission service 1,162 1,039 975 EECRF 50 46 44 Revenues collected for pass-through expenses 1,212 1,085 1,019 Total operating revenues $ 5,243 $ 4,764 $ 4,511 Customers At December 31, 2022, our distribution business customers primarily consist of over 100 REPs that sell the electricity we distribute to consumers in our certificated service area. The consumers of the electricity we deliver (other than ultimate end-use customers served by an electric cooperative or a municipally-owned utility) are free to choose their electricity supplier from REPs who compete for their business. Our transmission base revenues are collected from load serving entities benefitting from our transmission system. Our transmission business customers consist of municipally-owned utilities, electric cooperatives and other distribution companies. Revenues from REP subsidiaries of our two largest customers collectively represented 26 % and 24 %, respectively, of our total operating revenues for the year ended 2022, 25 % and 23 %, respectively, of our total operating revenues for the year ended 2021 and 25 % and 18 %, respectively, of our total operating revenues for the year ended 2020. No other customer represented more than 10% of our total operating revenues. Variability Our revenues and cash flows are subject to seasonality, timing of customer billings, weather conditions and other electricity usage drivers, with revenues being highest in the summer. Payment of customer billings is due 35 days after invoicing. Under a PUCT rule relating to the Certification of Retail Electric Providers, write-offs of uncollectible amounts owed by REPs are recoverable as a regulatory asset. Pass-through Expenses Revenue equal to expenses that are allowed to be passed-through to customers (primarily third-party wholesale transmission service and energy efficiency program costs) are recognized at the time the expense is recognized. Franchise taxes are assessed by local governmental bodies, based on kWh delivered and are not a “pass-through” item. The rates we charge customers are intended to recover the franchise taxes, but we are not acting as an agent to collect the taxes from customers; therefore, franchise taxes are reported as a principal component of “taxes other than amounts related to income taxes” instead of a reduction to “revenues” in the income statement.

Provision In Lieu Of Income Tax

Provision In Lieu Of Income Taxes	12 Months Ended
	Dec. 31, 2022
Provision In Lieu Of Income Taxes [Abstract]
PROVISION IN LIEU OF INCOME TAXES	4. PROVISION IN LIEU OF INCOME TAXES Components of Liability in Lieu of Deferred Income Taxes The components of our liability in lieu of deferred income taxes are provided in the table below. At December 31, 2022 2021 Deferred Tax Related Assets: Employee benefit liabilities $ 267 $ 253 Regulatory liabilities 48 45 Other 43 45 Total 358 343 Deferred Tax Related Liabilities: Property, plant and equipment 2,261 2,132 Regulatory assets 278 274 Other 1 2 Total 2,540 2,408 Liability in lieu of deferred income taxes – net $ 2,182 $ 2,065 Provision (Benefit) in Lieu of Income Taxes The components of our reported provision (benefit) in lieu of income taxes are as follows: Years Ended December 31, 2022 2021 2020 Reported in operating expenses: Current: U.S. federal $ 136 $ 79 $ 100 State 27 24 22 Deferred: U.S. federal 39 63 27 Amortization of investment tax credits ( 1 ) ( 1 ) ( 1 ) Total reported in operating expenses 201 165 148 Reported in other income and deductions: Current: U.S. federal ( 13 ) ( 17 ) ( 17 ) Deferred federal 3 5 5 Total reported in other income and deductions ( 10 ) ( 12 ) ( 12 ) Total provision in lieu of income taxes $ 191 $ 153 $ 136 Reconciliation of provision in lieu of income taxes computed at the U.S. federal statutory rate to provision in lieu of income taxes: Years Ended December 31, 2022 2021 2020 Income before provision in lieu of income taxes $ 1,096 $ 923 $ 849 Provision in lieu of income taxes at the U.S. federal statutory rate of 21% $ 230 $ 194 $ 178 Amortization of investment tax credits – net of deferred tax effect ( 1 ) ( 1 ) ( 1 ) Amortization of excess deferred taxes ( 52 ) ( 52 ) ( 52 ) Texas margin tax, net of federal tax benefit 22 19 18 Nontaxable gains on benefit plan investments - ( 3 ) ( 2 ) Other ( 8 ) ( 4 ) ( 5 ) Reported provision in lieu of income taxes $ 191 $ 153 $ 136 Effective rate 17.4 % 16.6 % 16.0 % The net amounts of $ 2.182 billion and $ 2.065 billion reported in the balance sheets at December 31, 2022 and 2021, respectively, as liability in lieu of deferred income taxes include amounts previously recorded as net deferred tax liabilities. In connection with the sale of equity interests to Texas Transmission in 2008, we became a partnership for U.S. federal income tax purposes, and the temporary differences that gave rise to the deferred taxes will, over time, become taxable to the equity holders. Under a tax sharing agreement among us and our equity holders (see Note 1), we make payments to the equity holders related to income taxes when amounts would have become due to the IRS if Oncor was taxed as a corporation. Accordingly, as the temporary differences become taxable, we will pay the equity holders. In the event such amounts are not paid under the tax sharing agreement, it is probable that this regulatory liability will continue to be included in Oncor’s rate setting processes. Accounting For Uncertainty in Provision in Lieu of Income Taxes The statute of limitations is open for our partnership tax returns for the years beginning after December 31, 2018. We filed a refund claim for the tax year ending December 31, 2018, but the tax year is closed for new issues. Texas margin tax returns are still open for examination for tax years beginning after 2017. We are not a member of any consolidated federal tax group and assess our liability for uncertain tax positions in our partnership returns. We had approximately $ 1 million and $ 495,000 of uncertain tax positions at December 31, 2022 and December 31, 2021, respectively. Noncurrent liabilities included negligible amounts of accrued interest related to uncertain tax positions at December 31, 2022 and December 31, 2021. There were negligible amounts recorded related to interest and penalties in the years ended December 31, 2022 and 2021, respectively, and no ne in the year ended December 31, 2020. The federal income tax benefit on the interest accrued on uncertain tax positions, if any, is recorded as liability in lieu of deferred income taxes.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2022
Short-Term Borrowings [Abstract]
SHORT-TERM BORROWINGS	5. SHORT-TERM BORROWINGS The following table reflects our outstanding short-term borrowings and available unused credit under the Credit Facility and CP Program at December 31, 2022 and 2021: At December 31, 2022 2021 Total credit facility borrowing capacity $ 2,000 $ 2,000 Credit facility outstanding borrowings - - Commercial paper outstanding (a) ( 198 ) ( 215 ) Letters of credit outstanding (b) - ( 8 ) Available unused credit $ 1,802 $ 1,777 ____________ (a) The weighted average interest rates for commercial paper were 4.58 % and 0.30 % at December 31, 2022 and December 31, 2021, respectively. All outstanding CP Notes at December 31, 2022 and December 31, 2021 had maturity dates of less than one year. (b) The interest rate on the outstanding letters of credit at December 31, 2021 was 1.20 % based on our credit ratings. Credit Facility At December 31, 2022, we had a $ 2.0 billion unsecured Credit Facility that may be used for working capital and other general corporate purposes and issuances of letters of credit. Our CP Program obtains liquidity support from the Credit Facility. The Credit Facility, which was entered into in November 2021 and extended in November 2022 by amendment, has a maturity date of November 9, 2027. We have the option to request one additional 1 -year extension. We also have the option to request an increase in our borrowing capacity of up to $ 400 million in $ 100 million minimum increments, provided certain conditions set forth in the Credit Facility are met, including lender approvals. Borrowings under the Credit Facility, if any, are classified as short-term on the balance sheet. The amendment to the Credit Facility in November 2022 also replaced the LIBOR-based interest rates with interest rates based on SOFR, subject to adjustments as specified therein. Borrowings under the Credit Facility bear interest at a per annum rate equal to, at our option, (i) term SOFR for the interest period relevant to such borrowing, plus an adjustment of 0.10 % (the SOFR Adjustment), plus an applicable margin of between 0.875 % and 1.50 %, depending on certain credit ratings assigned to us, or (ii) an alternate base rate (equal to the greatest of (1) the prime rate as quoted by The Wall Street Journal on such date, (2) the greater of the federal funds effective rate or the overnight bank funding rate, plus 0.50 %, and (3) term SOFR for a one month interest period on such date, plus the SOFR Adjustment, plus 1.0%), plus, in each case, an applicable margin of between 0.00 % and 0.50 %, depending on certain credit ratings assigned to our debt. The Credit Facility also provides for an alternative rate of interest upon the occurrence of certain events related to the current benchmark. A commitment fee is payable quarterly in arrears and upon termination or commitment reduction at a rate per annum equal to between 0.075 % and 0.225 %, depending on certain credit ratings assigned to us, of the commitments under the Credit Facility. Letter of credit fees under the Credit Facility are payable quarterly in arrears and upon termination at a rate per annum equal to the applicable margin for adjusted term SOFR under the Credit Facility. Fronting fees in an amount as separately agreed by Oncor and any fronting bank that issues a letter of credit are also payable quarterly in arrears and upon termination to each such fronting bank. The Credit Facility includes sustainability-linked pricing metrics related to specific environmental and employee health and safety sustainability objectives. The Credit Facility provides that the applicable margin and commitment fee may be increased, decreased or have no change depending on our annual performance on the two sustainability-linked pricing metrics set forth in the Credit Facility. The maximum pricing adjustment in any given year is +/- 0.01 % on the commitment fee and +/- 0.05 % on the applicable margin. The Credit Facility requires that we maintain a maximum consolidated senior debt to consolidated total capitalization ratio of 0.65 to 1.00 and observe certain customary reporting requirements and other affirmative covenants. At December 31, 2022, we were in compliance with these covenants. The Credit Facility also contains customary events of default for facilities of this type, the occurrence of which would allow the lenders to accelerate all outstanding loans and terminate their commitments, including certain changes in control of Oncor that are not permitted transactions under the Credit Facility and cross-default provisions in the event Oncor or any of its subsidiaries defaults on indebtedness in a principal amount in excess of $ 100 million or receives judgments for the payment of money in excess of $ 100 million that are not discharged or stayed within 60 days . CP Program We maintain the CP Program under which we may issue unsecured CP Notes (with a maturity date not exceeding 397 days from the date of issue) on a private placement basis up to a maximum aggregate face or principal amount outstanding at any time of $2.0 billion. The proceeds of CP Notes issued under the CP Program are used for working capital and general corporate purposes. In November 2022, we amended the CP Program to provide for, among other things, an extension of the maximum maturity date for CP Notes. As amended, the CP Program now provides that CP Notes may be issued with maturity dates not exceeding 397 days from the date of issuance. The CP Program obtains liquidity support from our Credit Facility discussed above. We may utilize either the CP Program or the Credit Facility at our option, to meet our funding needs.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2022
Long-Term Debt [Abstract]
LONG-TERM DEBT	6. LONG-TERM DEBT Our long-term debt at December 31, 2022 consisted of fixed rate secured debt and variable rate unsecured debt. Our secured debt is secured equally and ratably by a first priority lien on certain transmission and distribution assets. See “Deed of Trust” below for additional information. At December 31, 2022 and 2021, our long-term debt consisted of the following: At December 31, 2022 2021 Fixed Rate Secured: 4.10 % Senior Notes, due June 1, 2022 $ - $ 400 7.00 % Debentures due September 1, 2022 - 482 2.75 % Senior Notes due June 1, 2024 500 500 2.95 % Senior Notes due April 1, 2025 350 350 0.55 % Senior Notes due October 1, 2025 450 450 3.86 % Senior Notes, Series A, due December 3, 2025 174 174 3.86 % Senior Notes, Series B, due January 14, 2026 38 38 3.70 % Senior Notes due November 15, 2028 650 650 5.75 % Senior Notes due March 15, 2029 318 318 2.75 % Senior Notes due May 15, 2030 700 700 7.00 % Senior Notes due May 1, 2032 494 494 4.15 % Senior Notes due June 1, 2032 400 - 4.55 % Senior Notes due September 15, 2032 700 - 7.25 % Senior Notes due January 15, 2033 323 323 7.50 % Senior Notes due September 1, 2038 300 300 5.25 % Senior Notes due September 30, 2040 475 475 4.55 % Senior Notes due December 1, 2041 400 400 5.30 % Senior Notes due June 1, 2042 348 348 3.75 % Senior Notes due April 1, 2045 550 550 3.80 % Senior Notes due September 30, 2047 325 325 4.10 % Senior Notes due November 15, 2048 450 450 3.80 % Senior Notes, due June 1, 2049 500 500 3.10 % Senior Notes, due September 15, 2049 700 700 3.70 % Senior Notes due May 15, 2050 400 400 2.70 % Senior Notes due November 15, 2051 500 500 4.60 % Senior Notes due June 1, 2052 400 - 4.95 % Senior Notes due September 15, 2052 500 - 5.35 % Senior Notes due October 1, 2052 300 300 Fixed rate secured long-term debt 11,245 10,127 Variable Rate Unsecured: Term loan credit agreement due August 30, 2023 100 - Variable rate unsecured long-term debt 100 - Total long-term debt 11,345 10,127 Unamortized discount and debt issuance costs ( 117 ) ( 95 ) Less amount due currently ( 100 ) ( 882 ) Long-term debt, less amounts due currently $ 11,128 $ 9,150 Deed of Trust Our long-term secured debt is secured equally and ratably by a first priority lien on all property acquired or constructed by Oncor for use in its electricity transmission and distribution business, subject to certain exceptions. The property is mortgaged under the Deed of Trust. The Deed of Trust permits us to secure indebtedness with the lien of the Deed of Trust up to the aggregate of (i) the amount of available bond credits, and (ii) 85 % of the lower of the fair value or cost of certain property additions that could be certified to the Deed of Trust collateral agent. Long-Term Debt-Related Activities in 2022 January 2022 Term Loan Credit Agreement On January 28, 2022, we entered into an unsecured term loan credit agreement with a commitment equal to an aggregate principal amount of $ 1.30 billion (January 2022 Term Loan Credit Agreement). The January 2022 Term Loan Credit Agreement had a maturity date of April 29, 2023. We borrowed $ 400 million on January 28, 2022, $ 600 million on February 28, 2022 (February 2022 borrowing), $ 185 million on March 28, 2022, and $ 115 million on April 28, 2022 under the January 2022 Term Loan Credit Agreement. The proceeds from each borrowing were used for general corporate purposes, including to repay outstanding CP Notes and, in the case of the February 2022 borrowing, to redeem in full the $ 400 million aggregate principal amount outstanding of our 4.10 % senior secured notes due June 1, 2022 (2022 Notes), plus accrued and unpaid interest on the 2022 Notes. On each of May 20, 2022 and September 9, 2022, we repaid $ 650 million of the aggregate principal amount outstanding under the January 2022 Term Loan Credit Agreement. Following the repayment on September 9, 2022, no borrowings remained outstanding and the January 2022 Term Loan Credit Agreement was no longer in effect. Loans under the January 2022 Term Loan Credit Agreement bore interest, at our option, at either (i) an adjusted term SOFR (calculated based on one-month term SOFR as of a specified date, plus the SOFR Adjustment) plus a spread of 0.575 %, (ii) an adjusted daily simple SOFR (calculated based on daily simple SOFR as of a specified date, plus the SOFR Adjustment) plus a spread of 0.575 %, or (iii) for any day, at a rate equal to the greatest of: (1) the prime rate publicly announced by the administrative agent on such date, (2) the federal funds effective rate on such date, plus 0.50 %, and (3) daily simple SOFR on such date, plus 1.0 %. July 2022 Term Loan Credit Agreement On July 6, 2022, we entered into an unsecured term loan credit agreement with a commitment equal to an aggregate principal amount of $ 650 million (July 2022 Term Loan Credit Agreement). The July 2022 Term Loan Credit Agreement had a maturity date of August 30, 2023. On August 29, 2022, we borrowed the entire $ 650 million aggregate principal amount available under the July 2022 Term Loan Credit Agreement. The proceeds from the borrowing were used for general corporate purposes, including to repay in full the $ 482 million principal amount outstanding of our 7.00 % Debentures due 2022 (the Debentures), plus accrued and unpaid interest on the Debentures. On September 9, 2022, we repaid $ 550 million of the aggregate principal amount outstanding under the July 2022 Term Loan Credit Agreement. As a result of the repayment, the aggregate principal amount outstanding under the July 2022 Term Loan Credit Agreement at December 31, 2022 was $ 100 million. Loans under the July 2022 Term Loan Credit Agreement bore interest, at our option, at either (i) an adjusted term SOFR (calculated based on one-month term SOFR as of a specified date, plus the SOFR Adjustment) plus a spread of 0.60 %, (ii) an adjusted daily simple SOFR (calculated based on daily simple SOFR as of a specified date, plus the SOFR Adjustment) plus a spread of 0.60 %, or (iii) for any day, at a rate equal to the greatest of: (1) the prime rate publicly announced by the administrative agent on such date, (2) the federal funds effective rate on such date plus 0.50 %, and (3) daily simple SOFR on such date, plus 1.0 %. Secured Debt Repayments On March 1, 2022, we redeemed in full the $ 400 million aggregate principal amount outstanding of our 2022 Notes, which were to mature on June 1, 2022. The redemption price was equal to 100 % of the principal amount of the 2022 Notes, plus accrued interest to, but not including, the redemption date of March 1, 2022. Following the redemption of the 2022 Notes, none of the 2022 Notes remain outstanding. On September 1, 2022, we repaid in full at maturity the $ 482 million aggregate principal amount outstanding of the Debentures, plus accrued and unpaid interest on the Debentures. Following the repayment of the Debentures, none of the Debentures remain outstanding. May 2022 Notes Issuances On May 20, 2022, we issued $ 400 million aggregate principal amount of 4.15 % senior secured notes due June 1, 2032 ( 4.15 % 2032 Notes) and $ 400 million aggregate principal amount of 4.60 % senior secured notes due June 1, 2052 ( 4.60 % 2052 Notes). We intend to allocate/disburse the proceeds from the sale of the 4.15 % 2032 Notes ( net of the discounts and fees to the initial purchasers and the estimated pro rata expenses related to the offering of the 4.15 % 2032 Notes ) of approximately $ 395 million, or an amount equal to the net proceeds from the sale of the 4.15 % 2032 Notes, to finance and/or refinance, in whole or in part, investments in or expenditures on one or more new and/or existing eligible green projects in accordance with our sustainable financing framework. Eligible green projects include transmission and distribution projects connecting renewable energy sources to the ERCOT grid, customer energy efficiency programs, and deployment of automated metering infrastructure and smart grid technology. Prior to the allocation/disbursement of the full amount of the net proceeds from the sale of the 4.15 % 2032 Notes, we temporarily applied the entire amount of such net proceeds to repay a portion of the principal amount outstanding under the January 2022 Term Loan Credit Agreement. We used the proceeds from the sale of the 4.60 % 2052 Notes (net of the discounts and fees to the initial purchasers and the estimated pro rata expenses related to the offering of the 4.60 % 2052 Notes) of approximately $ 392 million for general corporate purposes, including to repay $ 255 million of the principal amount outstanding under the January 2022 Term Loan Credit Agreement. The 4.15 % 2032 Notes bear interest at a rate of 4.15 % per annum and mature on June 1, 2032. The 4.60 % 2052 Notes bear interest at a rate of 4.60 % per annum and mature on June 1, 2052. Interest on the 4.15 % 2032 Notes and the 4.60 % 2052 Notes is payable in cash semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2022. Prior to March 1, 2032, in the case of the 4.15 % 2032 Notes and December 1, 2051 in the case of the 4.60 % 2052 Notes, we may redeem such notes at any time, in whole or in part, at a price equal to 100 % of their principal amount, plus accrued and unpaid interest and a “make-whole” premium. On and after March 1, 2032 in the case of the 4.15 % 2032 Notes and December 1, 2051 in the case of the 4.60 % 2052 Notes, we may redeem such notes at any time, in whole or in part, at a redemption price equal to 100 % of the principal amount of such notes, plus accrued and unpaid interest. September 2022 Notes Issuances On September 8, 2022, we issued $ 700 million aggregate principal amount of 4.55 % senior secured notes due September 15, 2032 ( 4.55 % 2032 Notes) and $ 500 million aggregate principal amount of 4.95 % senior secured notes due September 15, 2052 ( 4.95 % 2052 Notes). We used the proceeds from the sale of the 4.55 % 2032 Notes and the 4.95 % 2052 Notes (net of the discounts, fees and expenses) of approximately $ 1.185 billion for general corporate purposes, including to repay the full $ 650 million of the principal amount outstanding under the January 2022 Term Loan Credit Agreement and a portion of the principal amount outstanding under the July 2022 Term Loan Credit Agreement. The 4.55 % 2032 Notes bear interest at a rate of 4.55 % per annum and mature on September 15, 2032. The 4.95 % 2052 Notes bear interest at a rate of 4.95 % per annum and mature on September 15, 2052. Interest on the 4.55 % 2032 Notes and the 4.95 % 2052 Notes is payable in cash semi-annually in arrears on March 15 and September 15 of each year, beginning on March 15, 2023. Prior to June 15, 2032, in the case of the 4.55 % 2032 Notes and March 15, 2052 in the case of the 4.95 % 2052 Notes, we may redeem such notes at any time, in whole or in part, at a price equal to 100 % of their principal amount, plus accrued and unpaid interest and a “make-whole” premium. On and after June 15, 2032 in the case of the 4.55 % 2032 Notes and March 15, 2052 in the case of the 4.95 % 2052 Notes, we may redeem such notes at any time, in whole or in part, at a redemption price equal to 100 % of the principal amount of such notes, plus accrued and unpaid interest. Long-Term Debt-Related Activities in 2023 On January 9, 2023, we repaid the remaining $ 100 million principal amount outstanding under the July 2022 Term Loan Credit Agreement. Following the repayment on January 9, 2023, no borrowings remained outstanding and the July 2022 Term Loan Credit Agreement was no longer in effect. On January 24, 2023, we entered into an unsecured term loan credit agreement with a commitment equal to an aggregate principal amount of $ 625 million (January 2023 Term Loan Credit Agreement). The January 2023 Term Loan Credit Agreement has a maturity date of February 28, 2024. On January 27, 2023, we borrowed $ 500 million and on February 27, 2023, we borrowed the remaining $ 125 million under the January 2023 Term Loan Credit Agreement. As a result of the February 27, 2023 borrowing, no additional amount remains available for borrowing under the January 2023 Term Loan Credit Agreement. The proceeds from the borrowings were used for general corporate purposes, including repayment of outstanding CP Notes. Loans under the January 2023 Term Loan Credit Agreement bear interest, at our option, at either (i) an adjusted term SOFR (calculated based on term SOFR for a one-, three-, or six-month interest period, as selected by us, as of a specified date, plus the SOFR Adjustment) plus a spread of 0.85 %, (ii) an adjusted daily simple SOFR (calculated based on daily simple SOFR as of a specified date, plus the SOFR Adjustment) plus a spread of 0.85 %, or (iii) for any day, at a rate equal to the greatest of: (1) the prime rate quoted by The Wall Street Journal on such date, (2) the federal funds effective rate on such date, plus 0.50 %, and (3) daily simple SOFR on such date, plus 1.0 %. Maturities Long-term debt maturities at December 31, 2022, are as follows: Years Amounts 2023 $ 100 2024 500 2025 974 2026 38 2027 - Thereafter 9,733 Total $ 11,345 Fair Value of Long-Term Debt At December 31, 2022 and 2021, the estimated fair value of our long-term debt (including current maturities) totaled $ 10.398 billion and $ 11.758 billion, respectively, and the carrying amount totaled $ 11.228 billion and $ 10.032 billion, respectively. The fair value is estimated using observable market data, representing Level 2 valuations under accounting standards related to the determination of fair value.

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments And Contingencies [Abstract]
COMMITMENTS AND CONTINGENCIES	7. COMMITMENTS AND CONTINGENCIES Leases General A lease exists when a contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. As lessee, our leased assets primarily consist of our vehicle fleet and real estate leased for company offices and service centers. Our leases are accounted for as operating leases for GAAP purposes. At December 31, 2022 and 2021, we had $ 5 million and $ 3 million, respectively, in GAAP operating leases that are treated as capital leases solely for rate-making purposes. We generally recognize operating lease costs on a straight-line basis over the lease term in operating expenses. We are not a lessor to any material lease contracts. As of the lease commencement date, we recognize a lease liability for our obligation to make lease payments, which we initially measure at present value using our incremental borrowing rate at the date of lease commencement, unless the rate implicit in the lease is readily determinable. We determine our incremental borrowing rate based on the rate of interest that we would have to pay to borrow an amount equal to the lease payments on a collateralized basis over a similar term in a similar economic environment. We also record a ROU asset for our right to use the underlying asset, which is initially equal to the lease liability and adjusted for any lease payments made at or before lease commencement, lease incentives and any initial direct costs. Some of our lease agreements contain nonlease components, which represent items or activities that transfer a good or service. We separate lease components from nonlease components, if any, for our fleet vehicle and real estate leases for purposes of calculating the related lease liability and ROU asset. Certain of our leases include options to extend the lease terms for up to 20 years, while others include options to terminate early. Our lease liabilities and ROU assets are based on lease terms that may include such options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Short-term Leases Some of our contracts are short-term leases, which have a lease term of 12 months or less at lease commencement. As allowed by GAAP, we do not recognize a lease liability or ROU asset arising from short-term leases for all existing classes of underlying assets. We recognize short-term lease costs on a straight-line basis over the lease term. Lease Obligations, Lease Costs and Other Supplemental Data The following table presents GAAP operating lease related balance sheet information : At December 31, 2022 2021 ROU assets: Operating lease ROU and other assets (noncurrent) $ 145 $ 146 Lease liabilities: Operating lease and other current liabilities $ 38 $ 37 Operating lease and other obligations (noncurrent) 131 133 Total operating lease liabilities $ 169 $ 170 Weighted-average remaining lease term (in years) 6 7 Weighted-average discount rate 2.6 % 2.5 % The following table presents costs related to lease activities: Years Ended December 31, 2022 2021 2020 Operating lease costs (including amounts allocated to property, plant and equipment) $ 52 $ 51 $ 42 Short-term lease costs 9 11 10 Total operating lease costs $ 61 $ 62 $ 52 The following table presents lease related cash flows and other information: Years Ended December 31, 2022 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 49 $ 40 $ 35 ROU assets obtained in exchange for operating lease obligations (noncash) $ 42 $ 52 $ 72 The following table presents the maturity analysis of our operating lease liabilities and reconciliation to the present value of lease liabilities: Years Amounts 2023 $ 42 2024 33 2025 24 2026 16 2027 12 Thereafter 53 Total undiscounted lease payments 180 Less imputed interest ( 11 ) Total operating lease obligations $ 169 Capital Expenditures As part of the Sempra Acquisition, Oncor committed to make minimum aggregate capital expenditures equal to at least $ 7.5 billion from January 1, 2018 to December 31, 2022. Our actual capital expenditures from January 1, 2018 to December 31, 2022 totaled $ 11.9 billion. Sales and Use Tax Audits We are subject to sales and use tax audits in the normal course of business. Currently, the Texas State Comptroller’s office is conducting sales and use tax audits for audit periods January 2010 through June 2013, July 2013 through December 2017, and January 2018 through December 2022, respectively. No audit reports have been issued for these audits. While the outcome is uncertain, based on our analysis, we do not expect the ultimate resolution of these audits will have a material adverse effect on our financial position, results of operations, or cash flows. Energy Efficiency Spending We are required to annually invest in programs designed to improve customer electricity demand and consumption efficiencies to satisfy ongoing regulatory requirements. The requirement for the year 2023 is $ 52 million, which is recoverable through EECRF rates. Legal/Regulatory Proceedings In May 2022, we filed a base rate review with the PUCT and the cities in our service territory that have retained original jurisdiction over rates. In addition, in February 2023, we filed an application with the PUCT requesting that it grant certain exceptions to the DCRF filing application requirements, including extending the filing deadline. See Note 2 above for additional information regarding these proceedings. We are also involved in other legal and administrative proceedings in the normal course of business, the ultimate resolution of which, in the opinion of management, should not have a material effect upon our financial position, results of operations, or cash flows. Labor Contracts At December 31, 2022, approximately 17 % of our full time employees were represented by a labor union and covered by a collective bargaining agreement that expires in October 202 6 . Environmental Contingencies We must comply with environmental laws and regulations applicable to the handling and disposal of hazardous waste. We are in compliance with all current laws and regulations; however, the impact, if any, of changes to existing regulations or the implementation of new regulations is not determinable. The costs to comply with environmental regulations can be significantly affected by the following external events or conditions:  changes to existing state or federal regulation by governmental authorities having jurisdiction over control of toxic substances and hazardous and solid wastes, and other environmental matters, and  the identification of additional sites requiring clean-up or the filing of other complaints in which we may be asserted to be a potential responsible party. We have not identified any significant potential environmental liabilities at this time.

Membership Interests

Membership Interests	12 Months Ended
	Dec. 31, 2022
Membership Interests [Abstract]
MEMBERSHIP INTERESTS	8. MEMBERSHIP INTERESTS Contributions On February 13, 2023, we received cash capital contributions from our members totaling $ 106 million. During 2022, we received the following cash capital contributions from our members. Receipt Dates Amounts February 17, 2022 $ 106 April 26, 2022 $ 106 July 26, 2022 $ 106 October 24, 2022 $ 106 Distributions Distributions are limited by the requirement to maintain our regulatory capital structure at or below the debt-to-equity ratio established periodically by the PUCT for ratemaking purposes. The PUCT has the authority to determine what types of debt and equity are included in a utility’s debt-to-equity ratio. For purposes of this ratio, debt is calculated as long-term debt including any finance leases plus unamortized gains on reacquired debt less unamortized issuance expenses, premiums and losses on reacquired debt. Equity is calculated as membership interests determined in accordance with GAAP, excluding accumulated other comprehensive loss and the effects of acquisition accounting from a 2007 transaction. The Sempra Order and our Limited Liability Company Agreement set forth various restrictions on distributions to our members. Among those restrictions is the commitment that we will make no distributions (other than contractual tax payments) to our members that would cause us to exceed the PUCT’s authorized debt-to-equity ratio. Our current authorized regulatory capital structure is 57.5 % debt to 42.5 % equity. The distribution restrictions also include the ability of a majority of our Disinterested Directors, or either of the two member directors designated by Texas Transmission, to limit distributions to the extent each determines it is necessary to meet expected future requirements of Oncor (including continuing compliance with the PUCT debt-to-equity ratio commitment). At December 31, 2022, our regulatory capitalization was 53.5 % debt to 46.5 % equity and as a result we had $ 1.479 billion available to distribute to our members. On February 14, 2023, our board of directors declared a cash distribution of $ 106 million, which was paid to our members on February 15, 2023. During 2022, our board of directors declared, and we paid, the following cash distributions to our members: Declaration Dates Payment Dates Amounts February 18, 2022 February 18, 2022 $ 106 April 27, 2022 April 28, 2022 $ 106 July 27, 2022 July 28, 2022 $ 106 October 25, 2022 October 26, 2022 $ 106 Accumulated Other Comprehensive Income (Loss) (AOCI) The following table presents the changes to AOCI for the years ended December 31, 2022, 2021 and 2020 net of tax: Cash Flow Hedges – Interest Rate Swap Defined Benefit Pension and OPEB Plans Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ ( 18 ) $ ( 121 ) $ ( 139 ) Defined benefit pension plans - 9 9 Cash flow hedges — net decrease in fair value of derivatives (net of tax benefit of $ 6 ) ( 24 ) - ( 24 ) Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 1 ) 3 - 3 Balance at December 31, 2020 ( 39 ) ( 112 ) ( 151 ) Defined benefit pension plans - 17 17 Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 0 ) 3 - 3 Balance at December 31, 2021 ( 36 ) ( 95 ) ( 131 ) Defined benefit pension plans - ( 33 ) ( 33 ) Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 1 ) 2 - 2 Balance at December 31, 2022 $ ( 34 ) $ ( 128 ) $ ( 162 )

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2022
Employee Benefit Plans [Abstract]
Employee Benefit Plans	9. EMPLOYEE BENEFIT PLANS Regulatory Recovery of Pension and OPEB Costs PURA provides for our recovery of pension and OPEB costs applicable to services of our active and retired employees, as well as services of certain EFH Corp./Vistra active and retired employees for periods prior to the deregulation and disaggregation of EFH Corp.’s electric utility businesses effective January 1, 2002 (recoverable service). Accordingly, in 2005, we entered into an agreement with a predecessor of EFH Corp. whereby we assumed responsibility for applicable pension and OPEB costs related to those personnel’s recoverable service. We subsequently entered into agreements with EFH Corp. and a Vistra affiliate regarding provision of these benefits. Pursuant to our agreement with the Vistra affiliate, we sponsor an OPEB plan that provides certain retirement healthcare and life insurance benefits to eligible former Oncor, EFH Corp. and Vistra employees for whom both Oncor and Vistra bear a portion of the benefit responsibility. See “OPEB Plans” below for more information. We are authorized to establish a regulatory asset or liability for the difference between the amounts of pension and OPEB costs approved in current billing rates and the actual amounts that would otherwise have been recorded as charges or credits to earnings related to recoverable service. Amounts deferred are ultimately subject to regulatory approval. At December 31, 2022 and 2021, we had recorded net regulatory assets totaling $ 346 million and $ 581 million, respectively, related to pension and OPEB costs, including amounts related to deferred expenses as well as amounts related to unfunded liabilities that otherwise would be recorded as other comprehensive income. We have also assumed primary responsibility for pension benefits of a closed group of retired and terminated vested plan participants not related to our regulated utility business (non-recoverable service) in a 2012 transaction. Any retirement costs associated with non-recoverable service are not recoverable through rates. Pension Plans We sponsor the Oncor Retirement Plan and also have liabilities related to the Vistra Retirement Plan, both of which are qualified pension plans under Section 401(a) of the Code, and are subject to the provisions of ERISA. Employees do not contribute to either plan. These pension plans provide benefits to participants under one of two formulas: (i) a Cash Balance Formula under which participants earn monthly contribution credits based on their compensation and a combination of their age and years of service, plus monthly interest credits or (ii) a Traditional Retirement Plan Formula based on years of service and the average earnings of the three years of highest earnings. The interest component of the Cash Balance Formula is variable and is determined using the yield on 30-year Treasury bonds. The weighted-average interest crediting rate assumption for the Cash Balance Formula was 3.0 % for 2022. Under the Cash Balance Formula, future increases in earnings will not apply to prior service costs. All eligible employees hired after January 1, 2001 participate under the Cash Balance Formula. Certain employees, who, prior to January 1, 2002, participated under the Traditional Retirement Plan Formula, continue their participation under that formula. It is Oncor’s policy to fund its plans on a current basis to the extent required under existing federal tax and ERISA regulations. We also have the Supplemental Retirement Plan for certain employees whose retirement benefits cannot be fully earned under the qualified retirement plan. Supplemental Retirement Plan amounts are included in the reported pension amounts below. At December 31, 2022, the pension plans’ projected benefit obligation included a net actuarial gain of $ 662 million for 2022 attributable primarily to an increase in the discount rate due to changes in the corporate bond markets, partially offset by losses associated with economic assumption updates and plan experience different than expected. OPEB Plans We currently sponsor two OPEB Plans. One plan covers our eligible current and future retirees whose services are 100% attributed to the regulated business. Effective January 1, 2018, we established a second plan to cover eligible retirees of Oncor and EFH Corp./Vistra whose employment services were assigned to both Oncor (or a predecessor regulated utility business) and the non-regulated business of EFH Corp./Vistra. Vistra is solely responsible for its portion of the liability for retiree benefits related to those retirees. Oncor’s contribution policy for the OPEB Plans is to place in irrevocable external trusts dedicated to the payment of OPEB expenses an amount at least equal to the OPEB expense recovered in rates. At December 31, 2022, the OPEB Plans’ projected benefit obligation included a net actuarial gain of $ 190 million for 2022 attributable primarily to an increase in the discount rate due to changes in the corporate bond markets. Pension and OPEB Costs Recognized as Expense Pension and OPEB amounts provided herein include amounts related only to our obligations with respect to the various plans based on actuarial computations and reflect our employee and retiree demographics as described above. The calculated value method is used to determine the market-related value of the assets held in the trust for purposes of calculating our pension costs. Realized and unrealized gains or losses in the market-related value of assets are included over a rolling four -year period. Each year, 25 % of such gains and losses for the current year and for each of the preceding three years is included in the market-related value. Each year, the market-related value of assets is increased for contributions to the plan and investment income and is decreased for benefit payments and expenses for that year. The fair value method is used to determine the market-related value of the assets held in the trust for purposes of calculating OPEB cost. Detailed Information Regarding Pension and OPEB Benefits The following pension plans and OPEB Plans information is based on December 31, 2022, 2021 and 2020 measurement dates: Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Assumptions Used to Determine Net Periodic Pension and OPEB Costs: Discount rate 2.75 % 2.40 % 3.13 % 2.91 % 2.58 % 3.29 % Expected return on plan assets 4.70 % 4.35 % 4.94 % 5.61 % 5.24 % 5.90 % Rate of compensation increase 4.98 % 4.80 % 4.64 % - - - Components of Net Pension and OPEB Costs: Service cost $ 31 $ 33 $ 29 $ 4 $ 5 $ 6 Interest cost (a) 90 84 103 25 26 32 Expected return on assets (a) ( 104 ) ( 99 ) ( 109 ) ( 8 ) ( 7 ) ( 8 ) Amortization of prior service credit (a) - - - - ( 17 ) ( 20 ) Amortization of net loss (gain) (a) 32 52 48 ( 1 ) 18 10 Curtailment credit (a) - - - - - ( 1 ) Net pension and OPEB costs 49 70 71 20 25 19 Net adjustments (b) ( 6 ) ( 25 ) ( 24 ) 11 6 11 Net pension and OPEB costs recognized as operation and maintenance expense or other deductions $ 43 $ 45 $ 47 $ 31 $ 31 $ 30 Other Changes in Plan Assets and Benefit Obligations Recognized as Regulatory Assets or in Other Comprehensive Income: Curtailment $ - $ - $ - $ - $ - $ 2 Net loss (gain) 50 ( 164 ) 61 ( 157 ) ( 142 ) 14 Amortization of net gain (loss) ( 32 ) ( 52 ) ( 48 ) 1 ( 18 ) ( 10 ) Amortization of prior service credit - - - - 17 20 Total recognized as regulatory assets or other comprehensive income 18 ( 216 ) 13 ( 156 ) ( 143 ) 26 Total recognized in net periodic pension and OPEB costs and as regulatory assets or other comprehensive income $ 61 $ ( 171 ) $ 60 $ ( 125 ) $ ( 112 ) $ 56 ____________ (a) The components of net costs other than service cost component are recorded in “Other deductions and (income) – net” in Statements of Consolidated Income. (b) Net adjustments include amounts principally deferred as property, regulatory asset or regulatory liability. Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Assumptions Used to Determine Benefit Obligations at Period End: Discount rate 4.94 % 2.75 % 2.40 % 5.19 % 2.91 % 2.58 % Rate of compensation increase 5.34 % 4.98 % 4.80 % - - - Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 3,358 $ 3,596 $ 3,400 $ 861 $ 1,013 $ 999 Service cost 31 33 29 4 5 6 Interest cost 90 84 103 25 26 32 Participant contributions - - - 19 19 18 Actuarial loss (gain) ( 662 ) ( 95 ) 302 ( 190 ) ( 136 ) 20 Benefits paid ( 169 ) ( 171 ) ( 165 ) ( 55 ) ( 66 ) ( 63 ) Curtailment - - - - - 1 Settlements ( 81 ) ( 89 ) ( 73 ) - - - Projected benefit obligation at end of year $ 2,567 $ 3,358 $ 3,596 $ 664 $ 861 $ 1,013 Accumulated benefit obligation at end of year $ 2,452 $ 3,199 $ 3,433 $ - $ - $ - Change in Plan Assets: Fair value of assets at beginning of year $ 2,669 $ 2,740 $ 2,494 $ 146 $ 145 $ 141 Actual return (loss) on assets ( 608 ) 168 350 ( 25 ) 13 14 Employer contributions 6 21 134 35 35 35 Participant contributions - - - 19 19 18 Benefits paid ( 169 ) ( 171 ) ( 165 ) ( 55 ) ( 66 ) ( 63 ) Settlements ( 81 ) ( 89 ) ( 73 ) - - - Fair value of assets at end of year $ 1,817 $ 2,669 $ 2,740 $ 120 $ 146 $ 145 Funded Status: Projected benefit obligation at end of year $ ( 2,567 ) $ ( 3,358 ) $ ( 3,596 ) $ ( 664 ) $ ( 861 ) $ ( 1,013 ) Fair value of assets at end of year 1,817 2,669 2,740 120 146 145 Funded status at end of year $ ( 750 ) $ ( 689 ) $ ( 856 ) $ ( 544 ) $ ( 715 ) $ ( 868 ) Pension Plans OPEB Plans At December 31, At December 31, 2022 2021 2022 2021 Amounts Recognized in the Balance Sheet Consist of: Liabilities: Other current liabilities $ ( 5 ) $ ( 5 ) $ ( 16 ) $ ( 12 ) Other noncurrent liabilities ( 764 ) ( 705 ) ( 528 ) ( 703 ) Net liabilities recognized $ ( 769 ) $ ( 710 ) $ ( 544 ) $ ( 715 ) Assets: Other noncurrent assets $ 19 $ 21 $ - $ - Net regulatory assets recognized 337 355 ( 180 ) ( 27 ) Net assets recognized $ 356 $ 376 $ ( 180 ) $ ( 27 ) Accumulated other comprehensive net loss $ 129 $ 93 $ - $ 3 The following table provides information regarding the assumed health care cost trend rates. Years Ended December 31, 2022 2021 2020 Assumed Health Care Cost Trend Rates – Not Medicare Eligible: Health care cost trend rate assumed for next year 7.40 % 6.70 % 6.90 % Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50 % 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2032 2029 2029 Assumed Health Care Cost Trend Rates – Medicare Eligible: Health care cost trend rate assumed for next year 8.30 % 7.50 % 7.80 % Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50 % 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2032 2031 2030 The following table provides information regarding pension plans with projected benefit obligations (PBO) and accumulated benefit obligations (ABO) in excess of the fair value of plan assets. At December 31, 2022 2021 Pension Plans with PBO and ABO in Excess of Plan Assets (a): Projected benefit obligations $ 2,567 $ 3,358 Accumulated benefit obligations $ 2,452 $ 3,199 Plan assets $ 1,817 $ 2,669 _________ (a) PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan are included. Oncor’s obligations with respect to the Vistra Retirement Plan are overfunded. As of December 31, 2022, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $ 140 million, $ 139 million and $ 159 million, respectively. As of December 31, 2021, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $ 187 million, $ 185 million and $ 208 million, respectively. The following table provides information regarding OPEB Plans with accumulated projected benefit obligations (APBO) in excess of the fair value of plan assets. At December 31, 2022 2021 OPEB Plans with APBO in Excess of Plan Assets Accumulated postretirement benefit obligations $ 664 $ 861 Plan assets $ 120 $ 146 Pension Plans and OPEB Plans Investment Strategy and Asset Allocations Our investment objective for the retirement plans is to invest in a suitable mix of assets to meet the future benefit obligations at an acceptable level of risk, while minimizing the volatility of contributions. Equity securities are held to achieve returns in excess of passive indexes by participating in a wide range of investment opportunities. International equity, real estate securities and credit strategies (high yield bonds, emerging market debt and bank loans) are used to further diversify the equity portfolio. International equity securities may include investments in both developed and emerging international markets. Fixed income securities include primarily corporate bonds from a diversified range of companies, U.S. Treasuries and agency securities and money market instruments. Our investment strategy for fixed income investments is to maintain a high grade portfolio of securities, which assists us in managing the volatility and magnitude of plan contributions and expense while maintaining sufficient cash and short-term investments to pay near-term benefits and expenses. The Oncor Retirement Plan’s investments are managed in two pools: one pool associated with the recoverable service portion of plan obligations related to Oncor’s regulated utility business, and a second pool associated with the non-recoverable service portion of plan obligations not related to Oncor’s regulated utility business. Each pool is invested in a broadly diversified portfolio as shown below. The second pool represents 25 % of total investments at December 31, 2022. The target asset allocation ranges of the pension plans’ investments by asset category are as follows: Target Allocation Ranges Asset Category Recoverable Non-recoverable International equities 8 % - 16 % 5 % - 11 % U.S. equities 17 % - 25 % 11 % - 17 % Real estate 7 % - 11 % 3 % - 7 % Credit strategies 3 % - 7 % 3 % - 7 % Fixed income 48 % - 58 % 65 % - 75 % Our investment objective for the OPEB Plans primarily follows the objectives of the pension plans discussed above, while maintaining sufficient cash and short-term investments to pay near-term benefits and expenses. The actual amounts at December 31, 2022 provided below are consistent with the asset allocation targets. Fair Value Measurement of Pension Plans’ Assets At December 31, 2022 and 2021, pension plans’ assets measured at fair value on a recurring basis consisted of the following: At December 31, 2022 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ - $ 20 $ - $ 20 Equity securities: U.S. 35 3 - 38 International 67 - - 67 Fixed income securities: Corporate bonds (a) - 543 - 543 U.S. Treasuries - 41 - 41 Other (b) - 41 - 41 Total assets in the fair value hierarchy $ 102 $ 648 $ - 750 Total assets measured at NAV (c) 1,067 Total fair value of plan assets $ 1,817 At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ - $ 9 $ - $ 9 Equity securities: U.S. 65 1 - 66 International 138 1 - 139 Fixed income securities: Corporate bonds (a) - 879 - 879 U.S. Treasuries - 55 - 55 Other (b) - 50 - 50 Total assets in the fair value hierarchy $ 203 $ 995 $ - 1,198 Total assets measured at NAV (c) 1,471 Total fair value of plan assets $ 2,669 _____________ (a) Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P. (b) Other consists primarily of municipal bonds, emerging market debt, bank loans and fixed income derivative instruments. (c) Fair value was measured using the NAV per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets. Fair Value Measurement of OPEB Plans’ Assets At December 31, 2022 and 2021, the OPEB Plans’ assets measured at fair value on a recurring basis consisted of the following: At December 31, 2022 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9 Equity securities: U.S. 13 - - 13 International 11 - - 11 Fixed income securities: Corporate bonds (a) - 28 - 28 U.S. Treasuries - 2 - 2 Other (b) 15 2 - 17 Total assets in the fair value hierarchy $ 48 $ 32 $ - 80 Total assets measured at NAV (c) 40 Total fair value of plan assets $ 120 At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9 Equity securities: U.S. 16 - - 16 International 17 - - 17 Fixed income securities: Corporate bonds (a) - 37 - 37 U.S. Treasuries - 2 - 2 Other (b) 16 2 - 18 Total assets in the fair value hierarchy $ 58 $ 41 $ - 99 Total assets measured at NAV (c) 47 Total fair value of plan assets $ 146 _____________ (a) Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P. (b) Other consists primarily of diversified bond mutual funds. (c) Fair value was measured using the NAV per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets. Expected Long-Term Rate of Return on Assets Assumption The retirement plans’ strategic asset allocation is determined in conjunction with the plans’ advisors and utilizes a comprehensive Asset-Liability modeling approach to evaluate potential long-term outcomes of various investment strategies. The modeling incorporates long-term rate of return assumptions for each asset class based on historical and future expected asset class returns, current market conditions, rate of inflation, current prospects for economic growth, and taking into account the diversification benefits of investing in multiple asset classes and potential benefits of employing active investment management. Pension Plans OPEB Plans Asset Class Expected Long-Term Rate of Return Asset Class Expected Long-Term Rate of Return International equity securities 7.83 % 401(h) accounts 7.37 % U.S. equity securities 7.40 % Life insurance VEBA 6.95 % Real estate 4.80 % Union VEBA 6.95 % Credit strategies 7.00 % Non-union VEBA 3.30 % Fixed income securities 5.17 % Shared retiree VEBA 3.30 % Weighted average (a) 6.05 % Weighted average 6.94 % _____________ (a) The 2023 expected long-term rate of return for the nonregulated portion of the Oncor Retirement Plan is 5.83 %, and for Oncor’s obligations with respect to the Vistra Retirement Plan is 6.47 %. Significant Concentrations of Risk The plans’ investments are exposed to risks such as interest rate, capital market and credit risks. We seek to optimize return on investment consistent with levels of liquidity and investment risk which are prudent and reasonable, given prevailing capital market conditions and other factors specific to participating employers. While we recognize the importance of return, investments will be diversified in order to minimize the risk of large losses unless, under the circumstances, it is clearly prudent not to do so. There are also various restrictions and guidelines in place including limitations on types of investments allowed and portfolio weightings for certain investment securities to assist in the mitigation of the risk of large losses. Assumed Discount Rate For the Oncor Retirement Plan at December 31, 2022, we selected the assumed discount rate using the Aon AA-AAA Bond Universe yield curve, which is based on corporate bond yields and at December 31, 2022 consisted of 1,138 corporate bonds with an average rating of AA and AAA using Moody’s, S&P and Fitch ratings. For Oncor’s obligations with respect to the Vistra Retirement Plan and the OPEB Plans at December 31, 2022, we selected the assumed discount rate using the Aon AA Above Median yield curve, which is based on corporate bond yields and at December 31, 2022 consisted of 504 corporate bonds with an average rating of AA using Moody’s, S&P and Fitch ratings. Future Pension Plans and OPEB Plans Cash Contributions Based on applicable minimum funding requirements and the latest actuarial projections, our future funding for the pension plans and the OPEB Plans, is expected to total $ 5 million and $ 22 million, respectively, in 2023 and approximately $ 356 million and $ 126 million, respectively, in the five-year period 2023 to 2027. We may also elect to make additional discretionary contributions based on market and/or business conditions. Future Benefit Payments Estimated future benefit payments to participants are as follows: 2023 2024 2025 2026 2027 2028-32 Pension plans $ 176 $ 180 $ 184 $ 186 $ 186 $ 925 OPEB Plans $ 45 $ 47 $ 48 $ 48 $ 49 $ 242 Thrift Plan Our employees are eligible to participate in a qualified savings plan, the Oncor Thrift Plan, which is a participant-directed defined contribution plan subject to the provisions of ERISA and intended to qualify under Section 401(a) of the Code, and to meet the requirements of Code Sections 401(k) and 401(m). Under the plan, employees may contribute, through pre-tax salary deferrals and/or after-tax applicable payroll deductions, a portion of their regular salary or wages as permitted under law. Employer matching contributions are made in an amount equal to 100 % of the first 6 % of employee contributions for employees who are covered under the Cash Balance Formula of the Oncor Retirement Plan, and 75 % of the first 6 % of employee contributions for employees who are covered under the Traditional Retirement Plan Formula of the Oncor Retirement Plan. Employer matching contributions are made in cash and may be allocated by participants to any of the plan’s investment options. Our contributions to the Oncor Thrift Plan totaled $ 26 million, $ 24 million and $ 23 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2022
Related-Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS	10. RELATED-PARTY TRANSACTIONS The following represent our significant related-party transactions and related matters.  We are not a member of another entity’s consolidated tax group, but our owners’ federal income tax returns include their portion of our results. Under the terms of a tax sharing agreement among us, Oncor Holdings, Texas Transmission and STH, we are generally obligated to make payments to our owners, pro rata in accordance with their respective membership interests, in an aggregate amount that is substantially equal to the amount of federal income taxes that we would have been required to pay if we were filing our own corporate income tax return. STH will file a combined Texas margin tax return which includes our results and our share of Texas margin tax payments, which are accounted for as income taxes and calculated as if we were filing our own return. See discussion in Note 1 under “Provision in Lieu of Income Taxes.” Under the “in lieu of” tax concept, all in lieu of tax assets and tax liabilities represent amounts that will eventually be settled with our members. In the event such amounts are not paid under the tax sharing agreement, it is probable that these regulatory amounts will continue to be included in Oncor’s rate setting processes. Amounts payable to (receivable from) members related to income taxes under the agreement and reported on our balance sheet consisted of the following: At December 31, 2022 2021 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes payable (receivable) $ 14 $ 4 $ 18 $ ( 5 ) $ ( 1 ) $ ( 6 ) Texas margin tax payable 27 - 27 24 - 24 Net payable (receivable) $ 41 $ 4 $ 45 $ 19 $ ( 1 ) $ 18 Cash payments made to our members related to income taxes consisted of the following: Years Ended December 31, 2022 2021 2020 STH Texas Transm. Total STH Texas Transm. Total STH Texas Transm. Total Federal income taxes $ 79 $ 20 $ 99 $ 49 $ 12 $ 61 $ 70 $ 17 $ 87 Texas margin taxes 24 - 24 23 - 23 22 - 22 Total payments $ 103 $ 20 $ 123 $ 72 $ 12 $ 84 $ 92 $ 17 $ 109  Pursuant to the PUCT order in Docket No. 48929 relating to Oncor’s 2019 acquisition of InfraREIT,Inc., we entered into an operation agreement with Sharyland under which we provide certain operations services to Sharyland at cost with no markup or profit. Sempra owns an indirect 50 % interest in the parent of Sharyland. Sharyland provided wholesale transmission service to us in the amount of $ 11 million, $ 10 million and $ 13 million in the years ended December 31, 2022, 2021 and 2020, respectively. We provided substation monitoring and switching service to Sharyland in the amount of $ 639,000 , $ 592,000 and $ 629,000 in the years ended December 31, 2022, 2021 and 2020, respectively.  We paid Sempra $ 103,000 , $ 116,000 and $ 119,000 for the years ended December 31, 2022, 2021 and 2020, respectively, for tax consulting and related services. See Notes 1, 4, and 8 for information regarding the tax sharing agreement and distributions to members.

Supplementary Financial Informa

Supplementary Financial Information	12 Months Ended
	Dec. 31, 2022
Supplementary Financial Information [Abstract]
SUPPLEMENTARY FINANCIAL INFORMATION	11. SUPPLEMENTARY FINANCIAL INFORMATION Other Deductions and (Income) Years Ended December 31, 2022 2021 2020 Professional fees $ 7 $ 9 $ 6 Recoverable Pension and OPEB - non-service costs 56 54 55 Non-recoverable pension and OPEB 2 3 4 Gain on sale of non-utility property ( 12 ) ( 1 ) - AFUDC – equity income ( 36 ) ( 27 ) ( 29 ) Interest and investment loss (income) – net 2 ( 8 ) ( 4 ) Other 1 1 1 Total other deductions and (income) - net $ 20 $ 31 $ 33 Interest Expense and Related Charges Years Ended December 31, 2022 2021 2020 Interest $ 453 $ 415 $ 413 Amortization of discount, premium and debt issuance costs 10 11 11 Less AFUDC – capitalized interest portion ( 18 ) ( 13 ) ( 19 ) Total interest expense and related charges $ 445 $ 413 $ 405 Trade Accounts and Other Receivables Trade accounts and other receivables reported on our balance sheet consisted of the following: At December 31, 2022 2021 Gross trade accounts and other receivables $ 897 $ 750 Allowance for uncollectible accounts ( 13 ) ( 12 ) Trade accounts receivable – net $ 884 $ 738 REP subsidiaries of our two largest customers collectively represented 23 % and 20 %, respectively, of the trade accounts receivable balance at December 31, 2022 and 22 % and 21 %, respectively, at December 31, 2021. No other customers represented 10% or more of the total trade accounts receivable balance. Under a PUCT rule relating to the Certification of Retail Electric Providers, write-offs of uncollectible amounts owed by REPs are deferred as a regulatory asset. Investments and Other Property Investments and other property reported on our balance sheet consist of the following: At December 31, 2022 2021 Assets related to employee benefit plans $ 123 $ 133 Non-utility property – land 12 20 Other 2 2 Total investments and other property $ 137 $ 155 The majority of these assets represent cash surrender values of life insurance policies that are purchased to fund liabilities under deferred compensation plans. At December 31, 2022 and 2021, the face amount of these policies totaled $ 175 million and $ 198 million, respectively, and the net cash surrender values (determined using a Level 2 valuation technique) totaled $ 94 million and $ 99 million at December 31, 2022 and 2021, respectively. Changes in cash surrender value are netted against premiums paid. Other investment assets held to satisfy deferred compensation liabilities are recorded at market value. Property, Plant and Equipment Property, plant and equipment reported on our balance sheet consisted of the following: Composite Depreciation Rate/ At December 31, Average Life of Depreciable Plant at December 31, 2022 2022 2021 Assets in service: Distribution 2.5 % / 39.6 years $ 17,226 $ 15,994 Transmission 2.9 % / 34.4 years 13,874 13,075 Other assets 5.9 % / 17.0 years 2,156 1,960 Total 33,256 31,029 Less accumulated depreciation 9,054 8,659 Net of accumulated depreciation 24,202 22,370 Construction work in progress 953 557 Held for future use 48 27 Property, plant and equipment – net $ 25,203 $ 22,954 Depreciation expense as a percent of average depreciable property approximated 2.7 % for each of the years ended December 31, 2022 and 2021. Intangible Assets Intangible assets (other than goodwill) reported on our balance sheet as part of property, plant and equipment consisted of the following: At December 31, 2022 At December 31, 2021 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Identifiable intangible assets subject to amortization: Land easements $ 662 $ 122 $ 540 $ 641 $ 117 $ 524 Capitalized software 1,183 441 742 1,066 451 615 Total $ 1,845 $ 563 $ 1,282 $ 1,707 $ 568 $ 1,139 A ggregate amortization expense for intangible assets totaled $ 76 million, $ 50 million and $ 62 million for the years ended December 31, 2022, 2021 and 2020, respectively. At December 31, 2022, the weighted average remaining useful lives of capitalized land easements and software were 83 years and 9 years, respectively. The estimated aggregate amortization expense for each of the next five fiscal years is as follows: Years Amortization Expenses 2023 $ 86 2024 $ 85 2025 $ 85 2026 $ 85 2027 $ 85 Goodwill totaling $ 4.740 billion was reported on our balance sheet at both December 31, 2022 and 2021. See Note 1 regarding goodwill impairment assessment and testing. Operating Lease and Other Obligations Operating lease and other obligations reported on our balance sheet consisted of the following: At December 31, 2022 2021 Operating lease liabilities (Notes 1 and 7) $ 131 $ 133 Investment tax credits 3 4 Customer advances for construction – noncurrent 71 30 Other 70 64 Total operating lease and other obligations $ 275 $ 231 Supplemental Cash Flow Information Years Ended December 31, 2022 2021 2020 Cash payments related to: Interest $ 441 $ 409 $ 406 Less capitalized interest ( 18 ) ( 13 ) ( 19 ) Interest payments (net of amounts capitalized) $ 423 $ 396 $ 387 Amount in lieu of income taxes (a): Federal $ 99 $ 61 $ 87 State 24 23 22 Total payments in lieu of income taxes $ 123 $ 84 $ 109 Noncash investing and financing activities: Construction expenditures financed through accounts payable (investing) (b) $ 305 $ 254 $ 254 Transfer of title to assets constructed for and prepaid by LP&L (investing) $ - $ 150 $ - Debt exchange offering (financing) $ - $ - $ 300 ______________ (a) See Note 10 for income tax related detail. (b) Represents end-of-period accruals .

Description Of Business And S_2

Description Of Business And Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Description Of Business And Significant Accounting Policies [Abstract]
Description Of Business	Description of Business References in this report to “we,” “our,” “us” and “the company” are to Oncor and/or its subsidiaries as apparent in the context. See “Glossary” for the definition of terms and abbreviations. We are a regulated electricity transmission and distribution company that provides the essential service of delivering electricity safely, reliably and economically to end-use consumers through our electrical systems, as well as providing transmission grid connections to merchant generation facilities and interconnections to other transmission grids in Texas. Our transmission and distribution rates are regulated by the PUCT and certain cities, and in certain limited instances, by the FERC . We are not a seller of electricity, nor do we purchase electricity for resale. We are a direct, majority-owned subsidiary of Oncor Holdings, which is indirectly and wholly owned by Sempra. Oncor Holdings owns 80.25 % of our membership interests and Texas Transmission owns 19.75 % of our membership interests. We are managed as an integrated business; consequently, there are no separate reportable business segments.
Ring-Fencing Measures	Ring-Fencing Measures Since 2007, various ring-fencing measures have been taken to enhance our credit quality and the separateness between the Oncor Ring-Fenced Entities and entities with ownership interests in Oncor or Oncor Holdings. These ring-fencing measures serve to mitigate the Oncor Ring-Fenced Entities’ credit exposure to owners of Oncor and Oncor Holdings, and to reduce the risk that the assets and liabilities of the Oncor Ring-Fenced Entities would be substantively consolidated with the assets and liabilities of any direct or indirect owners of Oncor and Oncor Holdings in connection with a bankruptcy of any such entities. These measures include the November 2008 sale of 19.75 % of Oncor’s equity interests to Texas Transmission. In March 2018, Sempra indirectly acquired Oncor Holdings after obtaining various approvals, including PUCT approval through the Sempra Order, which outlines certain ring-fencing measures, governance mechanisms and restrictions that apply after the Sempra Acquisition. As a result of these ring-fencing measures, Sempra does not control Oncor, and the ring-fencing measures limit Sempra’s ability to direct the management, policies and operations of Oncor, including the deployment or disposition of Oncor’s assets, declarations of dividends, strategic planning and other important corporate issues and actions. None of the assets of the Oncor Ring-Fenced Entities are available to satisfy the debt or obligations of any Sempra entity or any other direct or indirect owner of Oncor or Oncor Holdings. The assets and liabilities of the Oncor Ring-Fenced Entities are separate and distinct from those of any Sempra entities and any other direct or indirect owner of Oncor or Oncor Holdings. We do not bear any liability for debt or contractual obligations of Sempra and its affiliates or any other direct or indirect owner of Oncor or Oncor Holdings, and vice versa. Accordingly, our operations are conducted, and our cash flows are managed, independently from Sempra and its affiliates and any other direct or indirect owner of Oncor or Oncor Holdings. Oncor is a limited liability company governed by a board of directors, not its members. The Sempra Order and our Limited Liability Company Agreement require that the board of directors of Oncor consist of thirteen members, constituted as follows:  seven Disinterested Directors, who (i) shall be independent directors in all material respects under the rules of the New York Stock Exchange in relation to Sempra or its subsidiaries and affiliated entities and any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, and (ii) shall have no material relationship with Sempra or its subsidiaries or affiliated entities or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, currently or within the previous ten years ;  two members designated by Sempra (through Oncor Holdings);  two members designated by Texas Transmission; and  two current or former officers of Oncor (each, an Oncor Officer Director), currently Robert S. Shapard and E. Allen Nye, Jr., who are our Chairman of our board of directors and Chief Executive, respectively. Until March 9, 2028, in order for a current or former officer of Oncor to be eligible to serve as an Oncor Officer Director, the officer cannot have worked for Sempra or any of its subsidiaries or affiliated entities (excluding Oncor Holdings and Oncor) or any other entity with a direct or indirect ownership interest in Oncor or Oncor Holdings in the ten-year period prior to the date on which the officer first became employed by Oncor. Oncor Holdings, at the direction of STIH, has the right to nominate and/or seek the removal of the Oncor Officer Directors, subject to approval by a majority of the Oncor board of directors. In addition, the Sempra Order provides that Oncor’s board of directors cannot be overruled by the board of directors of Sempra or any of its subsidiaries on dividend policy, the issuance of dividends or other distributions (except for contractual tax payments), debt issuance, capital expenditures, operation and maintenance expenditures, management and service fees, and appointment or removal of members of the board of directors, provided that certain actions may also require the additional approval of the Oncor Holdings board of directors. The Sempra Order also provides that any changes to the size, composition, structure or rights of the board of directors must first be approved by the PUCT. In addition, if Sempra acquires Texas Transmission’s interest in Oncor, the two board of director positions on Oncor’s board of directors that Texas Transmission is entitled to appoint will be eliminated and the size of Oncor’s board of directors will be reduced by two . Additional regulatory commitments, governance mechanisms and restrictions provided in the Sempra Order and our Limited Liability Company Agreement to ring-fence Oncor from its owners include, among others:  A majority of the Disinterested Directors of Oncor and the directors designated by Texas Transmission that are present and voting (of which at least one must be present and voting) must approve any annual or multi-year budget if the aggregate amount of capital expenditures or operating and maintenance expenditures in such budget is more than a 10 % increase or decrease from the corresponding amounts of such expenditures in the budget for the preceding fiscal year or multi-year period, as applicable;  Oncor may not pay any dividends or make any other distributions (except for contractual tax payments) if a majority of its Disinterested Directors or either of the two directors appointed by Texas Transmission determines that it is in the best interests of Oncor to retain such amounts to meet expected future requirements;  At all times, Oncor will remain in compliance with the debt-to-equity ratio established by the PUCT from time to time for ratemaking purposes, and Oncor will not pay dividends or other distributions (except for contractual tax payments), if that payment would cause its debt-to-equity ratio to exceed the debt-to-equity ratio approved by the PUCT;  If the credit rating on Oncor’s senior secured debt by any of the three major rating agencies falls below BBB (or the equivalent), Oncor will suspend dividends and other distributions (except for contractual tax payments), unless otherwise allowed by the PUCT;  Without the prior approval of the PUCT, neither Sempra nor any of its affiliates (excluding Oncor) will incur, guaranty or pledge assets in respect of any indebtedness that is dependent on the revenues of Oncor in more than a proportionate degree than the other revenues of Sempra or on the membership interests of Oncor, and there will be no debt at STH or STIH at any time following the closing of the Sempra Acquisition;  Neither Oncor nor Oncor Holdings will lend money to, borrow money from or share credit facilities with Sempra or any of its affiliates (other than Oncor subsidiaries), or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings;  There must be maintained certain “separateness measures” that reinforce the legal and financial separation of Oncor from its owners, including a requirement that dealings between Oncor, Oncor Holdings and their subsidiaries with Sempra, any of Sempra’s other affiliates or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings, must be on an arm’s-length basis, limitations on affiliate transactions, separate recordkeeping requirements and a prohibition on Sempra or its affiliates or any entity with a direct or indirect ownership interest in Oncor or Oncor Holdings pledging Oncor assets or membership interests for any entity other than Oncor; and  Until March 9, 2023, Sempra must hold indirectly at least 51 % of the ownership interests in Oncor and Oncor Holdings, unless otherwise specifically authorized by the PUCT.
Basis Of Presentation	Basis of Presentation Our consolidated financial statements have been prepared in accordance with GAAP governing rate-regulated operations. All dollar amounts in the financial statements and tables in the notes are stated in U.S. dollars in millions unless otherwise indicated.
Use Of Estimates	Use of Estimates Preparation of our financial statements requires management to make estimates and assumptions about future events that affect the reporting of assets and liabilities at the balance sheet dates and the reported amounts of revenue and expense, including fair value measurements. In the event estimates and/or assumptions prove to be different from actual amounts, adjustments are made in subsequent periods to reflect more current information. No material adjustments were made to previous estimates or assumptions during the current year.
Revenue Recognition	Revenue Recognition Oncor’s revenue is billed under tariffs approved by the PUCT and the majority of revenues are related to providing electric delivery service to consumers. Tariff rates are designed to recover the cost of providing electric delivery service including a reasonable rate of return on invested capital. Revenues are generally recognized when the underlying service has been provided in an amount prescribed by the related tariff. See Note 3 for additional information regarding revenues.
Interest Rate Derivatives, Hedge Accounting and Mark-to-Market Accounting	Interest Rate Derivatives, Hedge Accounting and Mark-to-Market Accounting We are exposed to interest rates primarily as a result of our current and expected use of financing. We may, from time to time, utilize interest rate derivative instruments typically designated as cash flow hedges, to lock in interest rates in anticipation of future financings. We may designate an interest rate derivative instrument as a cash flow hedge if it effectively converts anticipated cash flows associated with interest payments to a fixed dollar amount. Designating interest rate derivative instruments as cash flow hedges is dependent on the business context in which the instrument is being used, the effectiveness of the instrument in offsetting the risk that the future cash flows of interest payments may vary, and other criteria. In accounting for cash flow hedges, derivative assets and liabilities are recorded on the balance sheet at fair value with an offset to other comprehensive income (loss). Amounts remain in accumulated other comprehensive income (loss) and are reclassified into net income as the interest expense on the related debt affects net income. T he fair value of an interest rate derivative instrument is recognized on the balance sheet as a derivative asset or liability and changes in the fair value are recognized in net income if the criteria for cash flow hedge accounting are not met or if the instrument is not designated as a cash flow hedge. This recognition is referred to as “mark-to-market”
Impairment Of Long-Lived Assets And Goodwill	Impairment of Long-Lived Assets and Goodwill We evaluate long-lived assets (including intangible assets with finite lives) for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We also evaluate goodwill for impairment annually on October 1 and whenever events or changes in circumstances indicate that an impairment may exist. The determination of the existence of these and other indications of impairment involves judgments that are subjective in nature and may require the use of estimates in forecasting future results and cash flows. For our annual goodwill impairment testing, we generally have the option to directly perform a quantitative assessment or first make a qualitative assessment of whether it is more likely than not that our enterprise fair value is less than our enterprise carrying value before applying the quantitative assessment. If we elect to perform the qualitative assessment, we evaluate relevant events and circumstances, including but not limited to, macroeconomic conditions, industry and market considerations, cost factors and our overall financial performance. If, after assessing these qualitative factors, we determine that it is more-likely-than-not that our estimated enterprise fair value is less than our enterprise carrying book value, then we perform a quantitative assessment. If, after performing the quantitative assessment, we determine that goodwill is impaired, we record the amount of goodwill impairment as the excess of enterprise carrying book value over estimated enterprise fair value, not to exceed the carrying amount of goodwill. For our annual goodwill impairment testing in 2022, we elected to perform a quantitative assessment of goodwill as of October 1, 2022. We estimated our enterprise fair value by weighting results from a market-based approach and an income-based approach. Key assumptions in the valuation methodologies for goodwill included terminal value, discount rates, and comparable multiples from publicly traded companies in our industry. Based on our analysis, we determined that our estimated enterprise fair value was in excess of our enterprise carrying book value, indicating none of our goodwill was impaired and no impairment was recognized in 2022. For our annual goodwill impairment testing in 2021, w e elected to perform a qualitative assessment of goodwill as of October 1, 2021 and concluded that an estimated enterprise fair value was more likely than not greater than our enterprise carrying book value. As a result , no additional testing for impairment was required and n o impairment was recognized in 2021. Goodwill totaling $ 4.740 billion was reported on our balance sheet at both December 31, 2022 and 2021.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash For purposes of reporting cash and cash equivalents, highly liquid investments with original maturities of three months or less at the date of purchase are considered to be cash equivalents. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the Consolidated Balance Sheets to the sum of such amounts reported on the Statements of Consolidated Cash Flows: At December 31, 2022 2021 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 10 $ 11 Restricted cash, current (a) 16 13 Restricted cash, noncurrent (a) 72 30 Total cash, cash equivalents and restricted cash on the Statements of Consolidated Cash Flows $ 98 $ 54 ____________ (a) Restricted cash represents amounts deposited with Oncor for customer advances for construction that are subject to return in accordance with PUCT rules, ERCOT requirements or our tariffs relating to generation interconnection and construction and/or extension of electric delivery system facilities. We maintain these amounts in a separate escrow account.
Provision In Lieu Of Income Taxes	Provision in Lieu of Income Taxes Our tax sharing agreement with Oncor Holdings, Texas Transmission and STH provides for the calculation of amounts related to income taxes for each of Oncor Holdings and Oncor substantially as if these entities were taxed as corporations and requires payments to the members determined on that basis (without duplication for any income taxes paid by a subsidiary of Oncor Holdings). We are a partnership for U.S. federal income tax purposes. Accordingly, while partnerships are not subject to income taxes, in consideration of the presentation of our financial statements as an entity subject to cost-based regulatory rate-setting processes, with such costs historically including income taxes, the financial statements present amounts determined under the tax sharing agreement as “provision in lieu of income taxes” and “liability in lieu of deferred income taxes”. Such amounts are determined in accordance with the provisions of the accounting guidance for income taxes and accounting standards that provide interpretive guidance for accounting for uncertain tax positions and thus differences between the book and tax bases of assets and liabilities are accounted for as if we were a stand-alone corporation. In the event such amounts are not paid under the tax sharing agreement, it is probable that this regulatory liability will continue to be included in Oncor’s rate setting processes. We classify any interest and penalties expense related to uncertain tax positions as current provision in lieu of income taxes as discussed in Note 4.
Defined Benefit Pension Plans And OPEB Plans	Defined Benefit Pension Plans and OPEB Plans We have liabilities under pension plans that offer benefits based on either a traditional defined benefit formula or a cash balance formula and OPEB Plans that offer certain health care and life insurance benefits to eligible employees and their eligible dependents upon the retirement of such employees. Costs of pension and OPEB Plans are dependent on numerous factors, assumptions and estimates. See Note 9 for additional information regarding pension and OPEB Plans.
Contingencies	Contingencies Our financial results may be affected by judgments and estimates related to contingencies. For loss contingencies, we accrue the loss if an event has occurred on or before the balance sheet date, and:  information available through the date we file our financial statements indicates it is probable that a loss has been incurred, given the likelihood of uncertain future events; and  the amount of the loss can be reasonably estimated. We do not accrue contingencies that might result in gains. We continuously assess contingencies for litigation claims, environmental remediation and other events. See Note 7 for a discussion of contingencies.
System Of Accounts	System of Accounts Our accounting records have been maintained in accordance with the FERC Uniform System of Accounts as adopted by the PUCT.
Property, Plant And Equipment	Property, Plant and Equipment Property, plant and equipment is stated at original cost. The cost of self-constructed property additions includes materials and both direct and indirect labor and applicable overhead and AFUDC. D epreciation of property, plant and equipment is calculated on a straight-line basis over the estimated service lives of the properties based on depreciation rates approved by the PUCT. As is common in the industry, depreciation expense is recorded using composite depreciation rates that reflect blended estimates of the lives of major asset groups as compared to depreciation expense calculated on a component asset-by-asset basis. Depreciation rates include plant removal costs as a component of depreciation expense, consistent with regulatory treatment. Actual removal costs incurred are charged to accumulated depreciation. Accrued removal costs in excess of incurred removal costs are reclassified as a regulatory liability to retire assets in the future.
Regulatory Assets And Liabilities	Regulatory Assets and Liabilities We are subject to rate regulation and our financial statements reflect regulatory assets and liabilities in accordance with accounting standards related to the effect of certain types of regulation. Regulatory assets and liabilities represent probable future revenues that will be recovered from or refunded to customers through the ratemaking process based on PURA and/or the PUCT’s orders, precedents or substantive rules. Rate regulation is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital subject to PUCT review for reasonableness. Regulatory decisions can have an impact on the recovery of costs, the rate earned on invested capital and the timing and amount of assets to be recovered by rates. See Note 2 for more information regarding regulatory assets and liabilities.
Franchise Taxes	Franchise Taxes Franchise taxes are assessed to us by local governmental bodies, based on kWh delivered and are a principal component of taxes other than amounts related to income taxes as reported in the income statement. Franchise taxes are not a “pass through” item. The rates we charge customers are intended to recover the franchise taxes, but we are not acting as an agent to collect the taxes from customers.
Allowance For Funds Used During Construction (AFUDC)	Allowance for Funds Used During Construction AFUDC is a regulatory cost accounting procedure whereby both interest charges on borrowed funds and a return on equity capital used to finance construction are included in the recorded cost of utility plant and equipment being constructed. AFUDC is capitalized on all projects involving construction periods lasting greater than thirty days. The interest portion of capitalized AFUDC is accounted for as a reduction to interest expense and the equity portion of capitalized AFUDC is accounted for as other income. See Note 11 for detail of amounts reducing interest expense and increasing other income.
Fair Value Of Nonderivative Financial Instruments	Fair Value of Nonderivative Financial Instruments The carrying amounts for financial assets classified as current assets and the carrying amounts for financial liabilities classified as current liabilities approximate fair value due to the short maturity of such instruments. The fair values of other financial instruments, for which carrying amounts and fair values have not been presented, are not materially different than their related carrying amounts. The following discussion of fair value accounting standards applies primarily to our determination of the fair value of assets in the pension plans’ and OPEB Plans’ trusts (see Note 9) and long-term debt (see Note 6). Accounting standards related to the determination of fair value define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We use a “mid-market” valuation convention (the mid-point price between bid and ask prices) as a practical expedient to measure fair value for the majority of our assets and liabilities subject to fair value measurement on a recurring basis. We primarily use the market approach for recurring fair value measurements and use valuation techniques to maximize the use of observable inputs and minimize the use of unobservable inputs. We categorize our assets and liabilities recorded at fair value based upon the following fair value hierarchy:  Level 1 valuations use quoted prices in active markets for identical assets or liabilities that are accessible at the measurement date. An active market is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.  Level 2 valuations use inputs that, in the absence of actively quoted market prices, are observable for the asset or liability, either directly or indirectly. Level 2 inputs include: (a) quoted prices for similar assets or liabilities in active markets, (b) quoted prices for identical or similar assets or liabilities in markets that are not active, (c) inputs other than quoted prices that are observable for the asset or liability such as interest rates and yield curves observable at commonly quoted intervals and (d) inputs that are derived principally from or corroborated by observable market data by correlation or other means. Our Level 2 valuations utilize over-the-counter broker quotes, quoted prices for similar assets or liabilities that are corroborated by correlations or other mathematical means and other valuation inputs.  Level 3 valuations use unobservable inputs for the asset or liability. Unobservable inputs are used to the extent observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. We use the most meaningful information available from the market combined with internally developed valuation methodologies to develop our best estimate of fair value. We utilize several different valuation techniques to measure the fair value of assets and liabilities, relying primarily on the market approach of using prices and other market information for identical and/or comparable assets and liabilities for those items that are measured on a recurring basis. The fair value of certain investments is measured using the NAV per share as a practical expedient. Such investments measured at NAV are not required to be categorized within the fair value hierarchy.

Description Of Business And S_3

Description Of Business And Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Description Of Business And Significant Accounting Policies [Abstract]
Schedule Of Cash, Cash Equivalents And Restricted Cash	At December 31, 2022 2021 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 10 $ 11 Restricted cash, current (a) 16 13 Restricted cash, noncurrent (a) 72 30 Total cash, cash equivalents and restricted cash on the Statements of Consolidated Cash Flows $ 98 $ 54 ____________ (a) Restricted cash represents amounts deposited with Oncor for customer advances for construction that are subject to return in accordance with PUCT rules, ERCOT requirements or our tariffs relating to generation interconnection and construction and/or extension of electric delivery system facilities. We maintain these amounts in a separate escrow account.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2022
Regulatory Matters [Abstract]
Components Of Regulatory Assets And Liabilities	Remaining Rate Recovery/Amortization Period at At December 31, December 31, 2022 2022 2021 Regulatory assets: Employee retirement liability (a)(b)(c) To be determined $ 157 $ 328 Employee retirement costs being amortized 5 years 158 193 Employee retirement costs incurred since the last base rate review period (b) To be determined 91 99 Self-insurance reserve (primarily storm recovery costs) being amortized 5 years 181 223 Self-insurance reserve incurred since the last base rate review period (primarily storm related) (b) To be determined 571 373 Debt reacquisition costs Lives of related debt 15 19 Under-recovered AMS costs 5 years 107 128 Energy efficiency program performance bonus (a) 1 year or less 28 31 Wholesale distribution substation service (b) To be determined 97 75 Unrecovered expenses related to COVID-19 (b) To be determined 37 35 Recoverable deferred income taxes Various 25 16 Uncollectible payments from REPs (b) To be determined 8 9 Other regulatory assets Various 27 18 Total regulatory assets 1,502 1,547 Regulatory liabilities: Estimated net removal costs Lives of related assets 1,431 1,348 Excess deferred taxes Primarily over lives of related assets 1,375 1,442 Over-recovered wholesale transmission service expense (a) 1 year or less 101 7 Unamortized gain on reacquisition of debt Lives of related debt 25 26 Employee retirement costs over-recovered since last base rate review period (b) To be determined 60 39 Other regulatory liabilities Various 22 14 Total regulatory liabilities 3,014 2,876 Net regulatory assets (liabilities) $ ( 1,512 ) $ ( 1,329 ) ____________ (a) Not earning a return in the regulatory rate-setting process. (b) Recovery/refund is specifically authorized by statute or by the PUCT, subject to reasonableness review. (c) Represents unfunded liabilities recorded in accordance with pension and OPEB accounting standards.

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2022
Revenues [Abstract]
Disaggregation Of Revenues	Years Ended December 31, 2022 2021 2020 Operating revenues Revenues contributing to earnings: Distribution base revenues $ 2,447 $ 2,217 $ 2,156 Transmission base revenues (TCOS revenues) Billed to third-party wholesale customers 944 879 803 Billed to REPs serving Oncor distribution customers, through TCRF 528 479 446 Total transmission base revenues 1,472 1,358 1,249 Other miscellaneous revenues 112 104 87 Total revenues contributing to earnings 4,031 3,679 3,492 Revenues collected for pass-through expenses: TCRF – third-party wholesale transmission service 1,162 1,039 975 EECRF 50 46 44 Revenues collected for pass-through expenses 1,212 1,085 1,019 Total operating revenues $ 5,243 $ 4,764 $ 4,511

Provision In Lieu Of Income T_2

Provision In Lieu Of Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Provision In Lieu Of Income Taxes [Abstract]
Schedule Of Deferred Tax Assets and Liabilities	At December 31, 2022 2021 Deferred Tax Related Assets: Employee benefit liabilities $ 267 $ 253 Regulatory liabilities 48 45 Other 43 45 Total 358 343 Deferred Tax Related Liabilities: Property, plant and equipment 2,261 2,132 Regulatory assets 278 274 Other 1 2 Total 2,540 2,408 Liability in lieu of deferred income taxes – net $ 2,182 $ 2,065
Components Of Income Tax Provisions (Benefits)	Years Ended December 31, 2022 2021 2020 Reported in operating expenses: Current: U.S. federal $ 136 $ 79 $ 100 State 27 24 22 Deferred: U.S. federal 39 63 27 Amortization of investment tax credits ( 1 ) ( 1 ) ( 1 ) Total reported in operating expenses 201 165 148 Reported in other income and deductions: Current: U.S. federal ( 13 ) ( 17 ) ( 17 ) Deferred federal 3 5 5 Total reported in other income and deductions ( 10 ) ( 12 ) ( 12 ) Total provision in lieu of income taxes $ 191 $ 153 $ 136
Schedule Of Income Tax Reconciliation	Years Ended December 31, 2022 2021 2020 Income before provision in lieu of income taxes $ 1,096 $ 923 $ 849 Provision in lieu of income taxes at the U.S. federal statutory rate of 21% $ 230 $ 194 $ 178 Amortization of investment tax credits – net of deferred tax effect ( 1 ) ( 1 ) ( 1 ) Amortization of excess deferred taxes ( 52 ) ( 52 ) ( 52 ) Texas margin tax, net of federal tax benefit 22 19 18 Nontaxable gains on benefit plan investments - ( 3 ) ( 2 ) Other ( 8 ) ( 4 ) ( 5 ) Reported provision in lieu of income taxes $ 191 $ 153 $ 136 Effective rate 17.4 % 16.6 % 16.0 %

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2022
Short-Term Borrowings [Abstract]
Schedule Of Short-Term Borrowings	At December 31, 2022 2021 Total credit facility borrowing capacity $ 2,000 $ 2,000 Credit facility outstanding borrowings - - Commercial paper outstanding (a) ( 198 ) ( 215 ) Letters of credit outstanding (b) - ( 8 ) Available unused credit $ 1,802 $ 1,777 ____________ (a) The weighted average interest rates for commercial paper were 4.58 % and 0.30 % at December 31, 2022 and December 31, 2021, respectively. All outstanding CP Notes at December 31, 2022 and December 31, 2021 had maturity dates of less than one year. (b) The interest rate on the outstanding letters of credit at December 31, 2021 was 1.20 % based on our credit ratings.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Long-Term Debt [Abstract]
Schedule Of Long-Term Debt	At December 31, 2022 2021 Fixed Rate Secured: 4.10 % Senior Notes, due June 1, 2022 $ - $ 400 7.00 % Debentures due September 1, 2022 - 482 2.75 % Senior Notes due June 1, 2024 500 500 2.95 % Senior Notes due April 1, 2025 350 350 0.55 % Senior Notes due October 1, 2025 450 450 3.86 % Senior Notes, Series A, due December 3, 2025 174 174 3.86 % Senior Notes, Series B, due January 14, 2026 38 38 3.70 % Senior Notes due November 15, 2028 650 650 5.75 % Senior Notes due March 15, 2029 318 318 2.75 % Senior Notes due May 15, 2030 700 700 7.00 % Senior Notes due May 1, 2032 494 494 4.15 % Senior Notes due June 1, 2032 400 - 4.55 % Senior Notes due September 15, 2032 700 - 7.25 % Senior Notes due January 15, 2033 323 323 7.50 % Senior Notes due September 1, 2038 300 300 5.25 % Senior Notes due September 30, 2040 475 475 4.55 % Senior Notes due December 1, 2041 400 400 5.30 % Senior Notes due June 1, 2042 348 348 3.75 % Senior Notes due April 1, 2045 550 550 3.80 % Senior Notes due September 30, 2047 325 325 4.10 % Senior Notes due November 15, 2048 450 450 3.80 % Senior Notes, due June 1, 2049 500 500 3.10 % Senior Notes, due September 15, 2049 700 700 3.70 % Senior Notes due May 15, 2050 400 400 2.70 % Senior Notes due November 15, 2051 500 500 4.60 % Senior Notes due June 1, 2052 400 - 4.95 % Senior Notes due September 15, 2052 500 - 5.35 % Senior Notes due October 1, 2052 300 300 Fixed rate secured long-term debt 11,245 10,127 Variable Rate Unsecured: Term loan credit agreement due August 30, 2023 100 - Variable rate unsecured long-term debt 100 - Total long-term debt 11,345 10,127 Unamortized discount and debt issuance costs ( 117 ) ( 95 ) Less amount due currently ( 100 ) ( 882 ) Long-term debt, less amounts due currently $ 11,128 $ 9,150
Schedule Of Long-Term Debt Maturity	Years Amounts 2023 $ 100 2024 500 2025 974 2026 38 2027 - Thereafter 9,733 Total $ 11,345

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2022
Commitments And Contingencies [Abstract]
Schedule Of Lease Information	At December 31, 2022 2021 ROU assets: Operating lease ROU and other assets (noncurrent) $ 145 $ 146 Lease liabilities: Operating lease and other current liabilities $ 38 $ 37 Operating lease and other obligations (noncurrent) 131 133 Total operating lease liabilities $ 169 $ 170 Weighted-average remaining lease term (in years) 6 7 Weighted-average discount rate 2.6 % 2.5 %
Schedule Of Lease Costs	Years Ended December 31, 2022 2021 2020 Operating lease costs (including amounts allocated to property, plant and equipment) $ 52 $ 51 $ 42 Short-term lease costs 9 11 10 Total operating lease costs $ 61 $ 62 $ 52 The following table presents lease related cash flows and other information: Years Ended December 31, 2022 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 49 $ 40 $ 35 ROU assets obtained in exchange for operating lease obligations (noncash) $ 42 $ 52 $ 72
Schedule Of Operating Lease Maturity	Years Amounts 2023 $ 42 2024 33 2025 24 2026 16 2027 12 Thereafter 53 Total undiscounted lease payments 180 Less imputed interest ( 11 ) Total operating lease obligations $ 169

Membership Interests (Tables)

Membership Interests (Tables)	12 Months Ended
	Dec. 31, 2022
Membership Interests [Abstract]
Schedule Of Cash Capital Contributions	Receipt Dates Amounts February 17, 2022 $ 106 April 26, 2022 $ 106 July 26, 2022 $ 106 October 24, 2022 $ 106
Schedule Of Distributions Paid	Declaration Dates Payment Dates Amounts February 18, 2022 February 18, 2022 $ 106 April 27, 2022 April 28, 2022 $ 106 July 27, 2022 July 28, 2022 $ 106 October 25, 2022 October 26, 2022 $ 106
Schedule Of Changes To Accumulated Other Comprehensive Income (Loss)	Cash Flow Hedges – Interest Rate Swap Defined Benefit Pension and OPEB Plans Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ ( 18 ) $ ( 121 ) $ ( 139 ) Defined benefit pension plans - 9 9 Cash flow hedges — net decrease in fair value of derivatives (net of tax benefit of $ 6 ) ( 24 ) - ( 24 ) Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 1 ) 3 - 3 Balance at December 31, 2020 ( 39 ) ( 112 ) ( 151 ) Defined benefit pension plans - 17 17 Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 0 ) 3 - 3 Balance at December 31, 2021 ( 36 ) ( 95 ) ( 131 ) Defined benefit pension plans - ( 33 ) ( 33 ) Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense $ 1 ) 2 - 2 Balance at December 31, 2022 $ ( 34 ) $ ( 128 ) $ ( 162 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Schedule Of Detailed Pension And OPEB Benefit Information	Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Assumptions Used to Determine Net Periodic Pension and OPEB Costs: Discount rate 2.75 % 2.40 % 3.13 % 2.91 % 2.58 % 3.29 % Expected return on plan assets 4.70 % 4.35 % 4.94 % 5.61 % 5.24 % 5.90 % Rate of compensation increase 4.98 % 4.80 % 4.64 % - - - Components of Net Pension and OPEB Costs: Service cost $ 31 $ 33 $ 29 $ 4 $ 5 $ 6 Interest cost (a) 90 84 103 25 26 32 Expected return on assets (a) ( 104 ) ( 99 ) ( 109 ) ( 8 ) ( 7 ) ( 8 ) Amortization of prior service credit (a) - - - - ( 17 ) ( 20 ) Amortization of net loss (gain) (a) 32 52 48 ( 1 ) 18 10 Curtailment credit (a) - - - - - ( 1 ) Net pension and OPEB costs 49 70 71 20 25 19 Net adjustments (b) ( 6 ) ( 25 ) ( 24 ) 11 6 11 Net pension and OPEB costs recognized as operation and maintenance expense or other deductions $ 43 $ 45 $ 47 $ 31 $ 31 $ 30 Other Changes in Plan Assets and Benefit Obligations Recognized as Regulatory Assets or in Other Comprehensive Income: Curtailment $ - $ - $ - $ - $ - $ 2 Net loss (gain) 50 ( 164 ) 61 ( 157 ) ( 142 ) 14 Amortization of net gain (loss) ( 32 ) ( 52 ) ( 48 ) 1 ( 18 ) ( 10 ) Amortization of prior service credit - - - - 17 20 Total recognized as regulatory assets or other comprehensive income 18 ( 216 ) 13 ( 156 ) ( 143 ) 26 Total recognized in net periodic pension and OPEB costs and as regulatory assets or other comprehensive income $ 61 $ ( 171 ) $ 60 $ ( 125 ) $ ( 112 ) $ 56 ____________ (a) The components of net costs other than service cost component are recorded in “Other deductions and (income) – net” in Statements of Consolidated Income. (b) Net adjustments include amounts principally deferred as property, regulatory asset or regulatory liability.
Schedule Of Assumptions Used And Net Periodic Benefit Cost Not Yet Recognized And Amounts Recognized In Other Comprehensive Income (Loss)	Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Assumptions Used to Determine Benefit Obligations at Period End: Discount rate 4.94 % 2.75 % 2.40 % 5.19 % 2.91 % 2.58 % Rate of compensation increase 5.34 % 4.98 % 4.80 % - - -
Schedule Of Changes In Projected Benefit Obligations And Changes In Fair Value Of Plan Assets And Net Funded Status	Pension Plans OPEB Plans Years Ended December 31, Years Ended December 31, 2022 2021 2020 2022 2021 2020 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 3,358 $ 3,596 $ 3,400 $ 861 $ 1,013 $ 999 Service cost 31 33 29 4 5 6 Interest cost 90 84 103 25 26 32 Participant contributions - - - 19 19 18 Actuarial loss (gain) ( 662 ) ( 95 ) 302 ( 190 ) ( 136 ) 20 Benefits paid ( 169 ) ( 171 ) ( 165 ) ( 55 ) ( 66 ) ( 63 ) Curtailment - - - - - 1 Settlements ( 81 ) ( 89 ) ( 73 ) - - - Projected benefit obligation at end of year $ 2,567 $ 3,358 $ 3,596 $ 664 $ 861 $ 1,013 Accumulated benefit obligation at end of year $ 2,452 $ 3,199 $ 3,433 $ - $ - $ - Change in Plan Assets: Fair value of assets at beginning of year $ 2,669 $ 2,740 $ 2,494 $ 146 $ 145 $ 141 Actual return (loss) on assets ( 608 ) 168 350 ( 25 ) 13 14 Employer contributions 6 21 134 35 35 35 Participant contributions - - - 19 19 18 Benefits paid ( 169 ) ( 171 ) ( 165 ) ( 55 ) ( 66 ) ( 63 ) Settlements ( 81 ) ( 89 ) ( 73 ) - - - Fair value of assets at end of year $ 1,817 $ 2,669 $ 2,740 $ 120 $ 146 $ 145 Funded Status: Projected benefit obligation at end of year $ ( 2,567 ) $ ( 3,358 ) $ ( 3,596 ) $ ( 664 ) $ ( 861 ) $ ( 1,013 ) Fair value of assets at end of year 1,817 2,669 2,740 120 146 145 Funded status at end of year $ ( 750 ) $ ( 689 ) $ ( 856 ) $ ( 544 ) $ ( 715 ) $ ( 868 )
Schedule Of Amounts Recognized In Balance Sheet	Pension Plans OPEB Plans At December 31, At December 31, 2022 2021 2022 2021 Amounts Recognized in the Balance Sheet Consist of: Liabilities: Other current liabilities $ ( 5 ) $ ( 5 ) $ ( 16 ) $ ( 12 ) Other noncurrent liabilities ( 764 ) ( 705 ) ( 528 ) ( 703 ) Net liabilities recognized $ ( 769 ) $ ( 710 ) $ ( 544 ) $ ( 715 ) Assets: Other noncurrent assets $ 19 $ 21 $ - $ - Net regulatory assets recognized 337 355 ( 180 ) ( 27 ) Net assets recognized $ 356 $ 376 $ ( 180 ) $ ( 27 ) Accumulated other comprehensive net loss $ 129 $ 93 $ - $ 3
Schedule Of Projected Benefit Obligations And Accumulated Benefit Obligations In Excess Of Plan Assets Fair Value	The following table provides information regarding pension plans with projected benefit obligations (PBO) and accumulated benefit obligations (ABO) in excess of the fair value of plan assets. At December 31, 2022 2021 Pension Plans with PBO and ABO in Excess of Plan Assets (a): Projected benefit obligations $ 2,567 $ 3,358 Accumulated benefit obligations $ 2,452 $ 3,199 Plan assets $ 1,817 $ 2,669 _________ (a) PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan are included. Oncor’s obligations with respect to the Vistra Retirement Plan are overfunded. As of December 31, 2022, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $ 140 million, $ 139 million and $ 159 million, respectively. As of December 31, 2021, PBO, ABO and the plan assets relating to Oncor’s obligations with respect to the Vistra Retirement Plan were $ 187 million, $ 185 million and $ 208 million, respectively. The following table provides information regarding OPEB Plans with accumulated projected benefit obligations (APBO) in excess of the fair value of plan assets. At December 31, 2022 2021 OPEB Plans with APBO in Excess of Plan Assets Accumulated postretirement benefit obligations $ 664 $ 861 Plan assets $ 120 $ 146
Schedule Of Target Asset Allocation Ranges By Asset Category	Target Allocation Ranges Asset Category Recoverable Non-recoverable International equities 8 % - 16 % 5 % - 11 % U.S. equities 17 % - 25 % 11 % - 17 % Real estate 7 % - 11 % 3 % - 7 % Credit strategies 3 % - 7 % 3 % - 7 % Fixed income 48 % - 58 % 65 % - 75 %
Schedule Of Health Care Cost Trend Rates	Years Ended December 31, 2022 2021 2020 Assumed Health Care Cost Trend Rates – Not Medicare Eligible: Health care cost trend rate assumed for next year 7.40 % 6.70 % 6.90 % Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50 % 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2032 2029 2029 Assumed Health Care Cost Trend Rates – Medicare Eligible: Health care cost trend rate assumed for next year 8.30 % 7.50 % 7.80 % Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50 % 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2032 2031 2030
Schedule Of Expected Long-Term Rate Of Return On Assets Assumptions	Pension Plans OPEB Plans Asset Class Expected Long-Term Rate of Return Asset Class Expected Long-Term Rate of Return International equity securities 7.83 % 401(h) accounts 7.37 % U.S. equity securities 7.40 % Life insurance VEBA 6.95 % Real estate 4.80 % Union VEBA 6.95 % Credit strategies 7.00 % Non-union VEBA 3.30 % Fixed income securities 5.17 % Shared retiree VEBA 3.30 % Weighted average (a) 6.05 % Weighted average 6.94 % _____________ (a) The 2023 expected long-term rate of return for the nonregulated portion of the Oncor Retirement Plan is 5.83 %, and for Oncor’s obligations with respect to the Vistra Retirement Plan is 6.47 %.
Schedule Of Estimated Future Benefit Payments	2023 2024 2025 2026 2027 2028-32 Pension plans $ 176 $ 180 $ 184 $ 186 $ 186 $ 925 OPEB Plans $ 45 $ 47 $ 48 $ 48 $ 49 $ 242
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule Of Assets Fair Value Measured On Recurring Basis	At December 31, 2022 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ - $ 20 $ - $ 20 Equity securities: U.S. 35 3 - 38 International 67 - - 67 Fixed income securities: Corporate bonds (a) - 543 - 543 U.S. Treasuries - 41 - 41 Other (b) - 41 - 41 Total assets in the fair value hierarchy $ 102 $ 648 $ - 750 Total assets measured at NAV (c) 1,067 Total fair value of plan assets $ 1,817 At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ - $ 9 $ - $ 9 Equity securities: U.S. 65 1 - 66 International 138 1 - 139 Fixed income securities: Corporate bonds (a) - 879 - 879 U.S. Treasuries - 55 - 55 Other (b) - 50 - 50 Total assets in the fair value hierarchy $ 203 $ 995 $ - 1,198 Total assets measured at NAV (c) 1,471 Total fair value of plan assets $ 2,669 _____________ (a) Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P. (b) Other consists primarily of municipal bonds, emerging market debt, bank loans and fixed income derivative instruments. (c) Fair value was measured using the NAV per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets.
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule Of Assets Fair Value Measured On Recurring Basis	At December 31, 2022 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9 Equity securities: U.S. 13 - - 13 International 11 - - 11 Fixed income securities: Corporate bonds (a) - 28 - 28 U.S. Treasuries - 2 - 2 Other (b) 15 2 - 17 Total assets in the fair value hierarchy $ 48 $ 32 $ - 80 Total assets measured at NAV (c) 40 Total fair value of plan assets $ 120 At December 31, 2021 Level 1 Level 2 Level 3 Total Asset Category Interest-bearing cash $ 9 $ - $ - $ 9 Equity securities: U.S. 16 - - 16 International 17 - - 17 Fixed income securities: Corporate bonds (a) - 37 - 37 U.S. Treasuries - 2 - 2 Other (b) 16 2 - 18 Total assets in the fair value hierarchy $ 58 $ 41 $ - 99 Total assets measured at NAV (c) 47 Total fair value of plan assets $ 146 _____________ (a) Substantially all corporate bonds are rated investment grade by Fitch, Moody’s or S&P. (b) Other consists primarily of diversified bond mutual funds. (c) Fair value was measured using the NAV per share as a practical expedient as the investments did not have a readily determinable fair value and are not required to be classified in the fair value hierarchy. The NAV fair value amounts presented here are intended to permit a reconciliation to the total fair value of plan assets.

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2022
Related-Party Transactions [Abstract]
Schedule Of Amounts Payable To (Receivables From) Related Parties	At December 31, 2022 2021 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes payable (receivable) $ 14 $ 4 $ 18 $ ( 5 ) $ ( 1 ) $ ( 6 ) Texas margin tax payable 27 - 27 24 - 24 Net payable (receivable) $ 41 $ 4 $ 45 $ 19 $ ( 1 ) $ 18
Schedule Of Cash Payments Made To (Received From) Related Parties	Years Ended December 31, 2022 2021 2020 STH Texas Transm. Total STH Texas Transm. Total STH Texas Transm. Total Federal income taxes $ 79 $ 20 $ 99 $ 49 $ 12 $ 61 $ 70 $ 17 $ 87 Texas margin taxes 24 - 24 23 - 23 22 - 22 Total payments $ 103 $ 20 $ 123 $ 72 $ 12 $ 84 $ 92 $ 17 $ 109

Supplementary Financial Infor_2

Supplementary Financial Information (Tables)	12 Months Ended
	Dec. 31, 2022
Supplementary Financial Information [Abstract]
Schedule Of Other Deductions And (Income)	Years Ended December 31, 2022 2021 2020 Professional fees $ 7 $ 9 $ 6 Recoverable Pension and OPEB - non-service costs 56 54 55 Non-recoverable pension and OPEB 2 3 4 Gain on sale of non-utility property ( 12 ) ( 1 ) - AFUDC – equity income ( 36 ) ( 27 ) ( 29 ) Interest and investment loss (income) – net 2 ( 8 ) ( 4 ) Other 1 1 1 Total other deductions and (income) - net $ 20 $ 31 $ 33
Schedule Of Interest Expense And Related Charges	Years Ended December 31, 2022 2021 2020 Interest $ 453 $ 415 $ 413 Amortization of discount, premium and debt issuance costs 10 11 11 Less AFUDC – capitalized interest portion ( 18 ) ( 13 ) ( 19 ) Total interest expense and related charges $ 445 $ 413 $ 405
Schedule Of Trade Accounts And Other Receivables	At December 31, 2022 2021 Gross trade accounts and other receivables $ 897 $ 750 Allowance for uncollectible accounts ( 13 ) ( 12 ) Trade accounts receivable – net $ 884 $ 738
Summary of Investments And Other Property	At December 31, 2022 2021 Assets related to employee benefit plans $ 123 $ 133 Non-utility property – land 12 20 Other 2 2 Total investments and other property $ 137 $ 155
Schedule Of Property, Plant And Equipment	Composite Depreciation Rate/ At December 31, Average Life of Depreciable Plant at December 31, 2022 2022 2021 Assets in service: Distribution 2.5 % / 39.6 years $ 17,226 $ 15,994 Transmission 2.9 % / 34.4 years 13,874 13,075 Other assets 5.9 % / 17.0 years 2,156 1,960 Total 33,256 31,029 Less accumulated depreciation 9,054 8,659 Net of accumulated depreciation 24,202 22,370 Construction work in progress 953 557 Held for future use 48 27 Property, plant and equipment – net $ 25,203 $ 22,954
Schedule Of Intangible Assets	At December 31, 2022 At December 31, 2021 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Identifiable intangible assets subject to amortization: Land easements $ 662 $ 122 $ 540 $ 641 $ 117 $ 524 Capitalized software 1,183 441 742 1,066 451 615 Total $ 1,845 $ 563 $ 1,282 $ 1,707 $ 568 $ 1,139
Schedule Of Estimated Aggregate Amortization Expenses	Years Amortization Expenses 2023 $ 86 2024 $ 85 2025 $ 85 2026 $ 85 2027 $ 85
Schedule Of Operating Lease, Third Party Joint Project And Other Obligations	At December 31, 2022 2021 Operating lease liabilities (Notes 1 and 7) $ 131 $ 133 Investment tax credits 3 4 Customer advances for construction – noncurrent 71 30 Other 70 64 Total operating lease and other obligations $ 275 $ 231
Schedule Of Supplemental Cash Flow Information	Years Ended December 31, 2022 2021 2020 Cash payments related to: Interest $ 441 $ 409 $ 406 Less capitalized interest ( 18 ) ( 13 ) ( 19 ) Interest payments (net of amounts capitalized) $ 423 $ 396 $ 387 Amount in lieu of income taxes (a): Federal $ 99 $ 61 $ 87 State 24 23 22 Total payments in lieu of income taxes $ 123 $ 84 $ 109 Noncash investing and financing activities: Construction expenditures financed through accounts payable (investing) (b) $ 305 $ 254 $ 254 Transfer of title to assets constructed for and prepaid by LP&L (investing) $ - $ 150 $ - Debt exchange offering (financing) $ - $ - $ 300 ______________ (a) See Note 10 for income tax related detail. (b) Represents end-of-period accruals

Description Of Business And S_4

Description Of Business And Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares item	Dec. 31, 2021 USD ($)
Business And Significant Accounting Polices [Line Items]
Number of reportable business segments | $ / shares	1
Number of board of directors	13
Number of disinterested directors	7
Direct or indirect ownership interest time period	10 years
Number of board positions to be eliminated upon acquisition	2
Number of directors appointed	2
Disinterested directors expenditure budget percentage	10%
Goodwill | $	$ 4,740	$ 4,740
Operating lease obligations | $	$ 169	$ 170
Sempra Energy [Member]
Business And Significant Accounting Polices [Line Items]
Number of disinterested directors	2
Oncor Holdings [Member]
Business And Significant Accounting Polices [Line Items]
Percentage of membership interest owned by non-controlling owners	80.25%
Number of directors appointed	2
Oncor Holdings [Member] | Sempra Energy [Member]
Business And Significant Accounting Polices [Line Items]
Percentage of membership interest owned by non-controlling owners	51%
Texas Transmission [Member]
Business And Significant Accounting Polices [Line Items]
Percentage of membership interest owned by non-controlling owners	19.75%
Number of disinterested directors	2

Description Of Business And S_5

Description Of Business And Significant Accounting Policies ((Schedule Of Cash, Cash Equivalents And Restricted Cash) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Description Of Business And Significant Accounting Policies [Abstract]
Cash and cash equivalents	$ 10	$ 11
Restricted cash, current (Note 1)	16	13
Restricted cash, noncurrent (Note 1)	72	30
Total cash, cash equivalents and restricted cash on the Condensed Statements of Consolidated Cash Flows	$ 98	$ 54	$ 27	$ 4

Regulatory Matters (Narrative)

Regulatory Matters (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Percentage	4.50%
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 251
Public Utilities, Requested Debt Capital Structure, Percentage	55%
Public Utilities, Requested Equity Capital Structure, Percentage	45%
Public Utilities, Requested Return on Equity, Percentage	10.30%
Percentage of Debt in Current Capital Structure	57.50%
Percentage of Equity in Current Capital Structure	42.50%
Public Utilities, Approved Return on Equity, Percentage	9.80%
Public Utilities, Accumulated Depreciation Reallocation	$ 680
Annual rate reductions related to reduction in income taxes	$ 146
Authorized return on equity	9.80%
Recommended [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Debt Capital Structure, Percentage	9.30%
Public Utilities, Requested Equity Capital Structure, Percentage	57.50%
Public Utilities, Requested Return on Equity, Percentage	42.50%
Recommended, Total Adjusted [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	$ 397
Number-Running Errors [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount	51
Public Utilities, Accumulated Depreciation Reallocation	346
Annual rate reductions related to reduction in income taxes	$ 95

Regulatory Matters (Components

Regulatory Matters (Components Of Regulatory Assets And Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	$ 1,502	$ 1,547
Carrying Amount, Regulatory Liabilities	3,014	2,876
Net regulatory assets (liabilities)	(1,512)	(1,329)
Estimated Net Removal Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	1,431	1,348
Excess Deferred Taxes [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	1,375	1,442
Over-Recovered Wholesale Transmission Service Expense [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	101	7
Unamortized Gain On Reacquisition Of Debt [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	25	26
Employee Retirement Costs Over Recovered Since Last Rate Review Period [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	60	39
Other Regulatory Liabilities [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Liabilities	22	14
Employee Retirement Liability [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	$ 157	328
Employee Retirement Costs Being Amortized [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	5 years
Carrying Amount, Regulatory Assets	$ 158	193
Employee Retirement Costs Incurred Since The Last Rate Review Period [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	$ 91	99
Self-Insurance Reserve (Primarily Storm Recovery Costs) Being Amortized [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	5 years
Carrying Amount, Regulatory Assets	$ 181	223
Self-Insurance Reserve Incurred Since The Last Rate Review Period (Primarily Storm Related) [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	571	373
Debt Reacquisition Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	$ 15	19
Under-recovered AMS Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	5 years
Carrying Amount, Regulatory Assets	$ 107	128
Energy Efficiency Performance Bonus [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	28	31
Wholesale Distribution Substation Service [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	97	75
Unrecovered Expenses Related To Covid19 [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	37	35
Recoverable Deferred Income Taxes Net [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	25	16
Uncollectible Payments From Reps [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	8	9
Other Regulatory Assets [Member]
Regulatory Assets And Liabilities [Line Items]
Carrying Amount, Regulatory Assets	$ 27	$ 18
Maximum [Member] | Over-Recovered Wholesale Transmission Service Expense [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	1 year
Maximum [Member] | Energy Efficiency Performance Bonus [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	1 year

Revenues (Narrative) (Details)

Revenues (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) customer item	Dec. 31, 2021 USD ($)	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Approved bonus | $	$ 28	$ 31
Number of REPS | item	100
Payment term	35 days
Number of largest customers | customer	2
REP Subsidiary One [Member] | Customers [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	26%	25%	25%
REP Subsidiary Two [Member] | Customers [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	24%	23%	18%

Revenues (Disaggregation Of Rev

Revenues (Disaggregation Of Revenues) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	$ 4,031	$ 3,679	$ 3,492
Revenues collected for pass-through expenses	1,212	1,085	1,019
Total operating revenues	5,243	4,764	4,511
Distribution Base Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	2,447	2,217	2,156
Transmission Base Revenues (TCOS Revenues) [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	1,472	1,358	1,249
Transmission Base Revenues (TCOS Revenues) [Member] | Third-Party Wholesale Customers [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	944	879	803
Transmission Base Revenues (TCOS Revenues) [Member] | REPS Serving Oncor Distribution Customers, Through TCRF [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	528	479	446
Other Miscellaneous Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	112	104	87
TCRF - Third-party Wholesale Transmission Service [Member]
Disaggregation of Revenue [Line Items]
Revenues collected for pass-through expenses	1,162	1,039	975
EECRF And Other Regulatory Charges [Member]
Disaggregation of Revenue [Line Items]
Revenues collected for pass-through expenses	$ 50	$ 46	$ 44

Provision In Lieu Of Income T_3

Provision In Lieu Of Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Provision In Lieu Of Income Taxes [Abstract]
Net liability in lieu of deferred income taxes	$ 2,182,000,000	$ 2,065,000,000
Uncertain tax positions related to timing of recognition	$ 1,000,000	$ 495,000
Benefit (expense) from interest and penalties			$ 0

Provision In Liew Of Income Tax

Provision In Liew Of Income Taxes (Schedule Of Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Provision In Lieu Of Income Taxes [Abstract]
Deferred tax assets, Employee benefit liabilities	$ 267	$ 253
Deferred tax assets, Regulatory liabilities	48	45
Deferred tax assets, Other	43	45
Total	358	343
Deferred tax liabilities, Property, plant and equipment	2,261	2,132
Deferred tax liabilities, Regulatory assets	278	274
Deferred Tax Liabilities, Other	1	2
Total	2,540	2,408
Liability in lieu of deferred income taxes - net	$ 2,182	$ 2,065

Provision In Lieu Of Income T_4

Provision In Lieu Of Income Taxes (Components Of Income Tax Provisions (Benefits)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Provision In Lieu Of Income Taxes [Abstract]
Current: U.S. federal	$ 136	$ 79	$ 100
Current: State	27	24	22
Deferred: U.S. federal	39	63	27
Amortization of investment tax credits	(1)	(1)	(1)
Total reported in operating expenses	201	165	148
U.S. federal	(13)	(17)	(17)
Deferred federal	3	5	5
Total reported in other income and deductions	(10)	(12)	(12)
Total provision in lieu of income taxes	$ 191	$ 153	$ 136

Provision In Lieu Of Income T_5

Provision In Lieu Of Income Taxes (Schedule Of Income Tax Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Provision In Lieu Of Income Taxes [Abstract]
Income before provision in lieu of income taxes	$ 1,096	$ 923	$ 849
Provision in lieu of income taxes at the U.S. federal statutory rate of 21% for 2019 and 2018 and 35% for 2017	230	194	178
Amortization of investment tax credits - net of deferred tax effect	(1)	(1)	(1)
Amortization of excess deferred taxes	(52)	(52)	(52)
Texas margin tax, net of federal tax benefit	22	19	18
Nontaxable gains on benefit plan investments		(3)	(2)
Other	(8)	(4)	(5)
Total provision in lieu of income taxes	$ 191	$ 153	$ 136
Effective rate	17.40%	16.60%	16%

Short-Term Borrowings (Narrativ

Short-Term Borrowings (Narrative) (Details)	12 Months Ended
	Dec. 31, 2022 USD ($)
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 2,000,000,000
Extension period for revolving line of credit	1 year
Additional increase in borrowing capacity amount	$ 400,000,000
Maximum indebtness amount before default	100,000,000
Maximum judgement for payment amount before default	$ 100,000,000
Discharge period	60 days
Maximum pricing adjustment on commitment fee, percentage	0.01%
Maximum pricing adjustment on applicable margin, percentage	0.05%
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Commitment fee	0.225%
Debt-to-capitalization ratio	0.0100
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Additional increase in borrowing capacity amount	$ 100,000,000
Commitment fee	0.075%
Debt-to-capitalization ratio	0.0065
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.85%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.10%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	1.50%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.875%
Federal Funds Effective Rate [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.50%
Federal Funds Effective Rate [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.50%
Federal Funds Effective Rate [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.50%
Federal Funds Effective Rate [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0%

Short-Term Borrowings (Schedule

Short-Term Borrowings (Schedule Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Short-Term Debt [Line Items]
Total borrowing capacity	$ 2,000,000	$ 2,000,000
Available unused credit	1,802,000	1,777,000
Commercial Paper [Member]
Short-Term Debt [Line Items]
Outstanding	$ (198,000)	$ (215,000)
Interest Rate	4.58%	0.30%
Letter of Credit [Member]
Short-Term Debt [Line Items]
Outstanding		$ (8,000)
Interest Rate		1.20%

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($)

1 Months Ended

12 Months Ended

Feb. 27, 2023

Jan. 27, 2023

Jan. 09, 2023

Sep. 15, 2022

Sep. 09, 2022

Sep. 08, 2022

Sep. 01, 2022

May 20, 2022

Mar. 01, 2022

Jan. 28, 2022

Jul. 31, 2022

Dec. 31, 2022

Dec. 31, 2021

Dec. 31, 2020

Jan. 24, 2023

Aug. 29, 2022

Jul. 06, 2022

Long-Term Debt [Line Items]

Repayments of long-term debt

$ 2,732,000,000

$ 1,290,000,000

$ 1,164,000,000

Percentage of principal amount plus accrued and unpaid interest and make-whole premium

100%

Percentage of fair value of cost of property additions certified to the Deed of Trust collateral agent

85%

Estimated fair value of our long-term debt including current maturities

$ 10,398,000,000

11,758,000,000

Carrying amount

$ 11,228,000,000

10,032,000,000

Daily Secured Overnight Financing Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

1%

London Interbank Offered Rate (LIBOR) [Member]

Long-Term Debt [Line Items]

Spread over variable rate

0.85%

Federal Funds Effective Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

0.50%

Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

1%

Notes 2032 and Notes 2052 [Member]

Long-Term Debt [Line Items]

Repayments of long-term debt

$ 650,000,000

Proceeds from sale of Notes

$ 1,185,000,000

Percentage of principal amount plus accrued and unpaid interest and make-whole premium

100%

January, 2022 Term Loan Credit Agreement Maturing April 29, 2023 [Member]

Long-Term Debt [Line Items]

Aggregate principal amount

$ 0

Term Loan Credit Agreement1 [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

$ 400,000,000

Debt principal amount

400,000,000

Term Loan Credit Agreement2 [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

600,000,000

Debt principal amount

600,000,000

Term Loan Credit Agreement3 [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

185,000,000

Debt principal amount

185,000,000

Term Loan Credit Agreement4 [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

115,000,000

Debt principal amount

115,000,000

7.00% Fixed Debentures Due September 1, 2022 [Member]

Long-Term Debt [Line Items]

Interest percentage

7%

Extinguishment of Debt, Amount

$ 482,000,000

4.15% Senior Notes Due June 1, 2032 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.15%

Proceeds from sale of Notes

$ 395,000,000

4.60% Senior Notes due June 1, 2052 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.60%

Repayments of long-term debt

$ 255,000,000

Proceeds from sale of Notes

$ 392,000,000

Term Loan Credit Agreement Maturing July, 2022 [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

0.60%

4.10% Fixed Senior Notes Due June 1, 2022 [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

400,000,000

Debt principal amount

$ 400,000,000

Spread over variable rate

4.10%

0.575%

4.10% Fixed Senior Notes Due June 1, 2022 [Member] | Federal Funds Effective Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

0.50%

4.10% Fixed Senior Notes Due June 1, 2022 [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]

Long-Term Debt [Line Items]

Spread over variable rate

1%

4.55% Senior Notes due September 15, 2032 [Member]

Long-Term Debt [Line Items]

Aggregate principal amount

$ 700,000,000

Spread over variable rate

4.55%

4.55%

4.95% Senior Notes due September 15, 2052

Long-Term Debt [Line Items]

Aggregate principal amount

$ 500,000,000

Spread over variable rate

4.95%

4.95%

January 2023 Term Loan Credit Agreement [Member] | Subsequent Event [Member]

Long-Term Debt [Line Items]

Repayments of long-term debt

$ 100,000,000

July 2022 Term Loan Credit Agreement [Member]

Long-Term Debt [Line Items]

Repayments of long-term debt

$ 550,000,000

Aggregate principal amount

$ 100,000,000

$ 650,000,000

$ 650,000,000

January 2023 Term Loan Credit Agreement 2 [Member] | Subsequent Event [Member]

Long-Term Debt [Line Items]

Debt Instrument, Face Amount

$ 625,000,000

Debt principal amount

$ 625,000,000

Proceeds from sale of Notes

$ 125,000,000

$ 500,000,000

Secured Debt [Member]

Long-Term Debt [Line Items]

Aggregate principal amount

$ 11,245,000,000

$ 10,127,000,000

Secured Debt [Member] | 3.70% Fixed Senior Notes Due November 15, 2028 [Member]

Long-Term Debt [Line Items]

Interest percentage

3.70%

3.70%

Repayments of long-term debt

$ 650,000,000

Aggregate principal amount

$ 650,000,000

$ 650,000,000

Due date

Nov. 15, 2028

Nov. 15, 2028

Secured Debt [Member] | 4.10% Fixed Senior Notes Due November 15, 2048 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.10%

4.10%

Aggregate principal amount

$ 450,000,000

$ 450,000,000

Due date

Nov. 15, 2048

Nov. 15, 2048

Secured Debt [Member] | 5.75% Fixed Senior Notes Due March 15, 2029 [Member]

Long-Term Debt [Line Items]

Interest percentage

5.75%

5.75%

Aggregate principal amount

$ 318,000,000

$ 318,000,000

Due date

Mar. 15, 2029

Mar. 15, 2029

Secured Debt [Member] | 7.00% Fixed Debentures Due September 1, 2022 [Member]

Long-Term Debt [Line Items]

Interest percentage

7%

7%

Aggregate principal amount

$ 482,000,000

Due date

Sep. 01, 2022

Sep. 01, 2022

Secured Debt [Member] | 3.86% Senior Notes, Series A, due December 3, 2025 [Member]

Long-Term Debt [Line Items]

Interest percentage

3.86%

3.86%

Aggregate principal amount

$ 174,000,000

$ 174,000,000

Due date

Dec. 03, 2025

Dec. 03, 2025

Secured Debt [Member] | 3.86% Senior Notes, Series B, due January 14, 2026 [Member]

Long-Term Debt [Line Items]

Interest percentage

3.86%

3.86%

Aggregate principal amount

$ 38,000,000

$ 38,000,000

Due date

Jan. 14, 2026

Jan. 14, 2026

Secured Debt [Member] | 3.10% Senior Notes, due September 15, 2049 [Member]

Long-Term Debt [Line Items]

Interest percentage

3.10%

3.10%

Aggregate principal amount

$ 700,000,000

$ 700,000,000

Due date

Sep. 15, 2049

Sep. 15, 2049

Secured Debt [Member] | 2.75% Senior Notes due June 1, 2024 [Member]

Long-Term Debt [Line Items]

Interest percentage

2.75%

2.75%

Aggregate principal amount

$ 500,000,000

$ 500,000,000

Due date

Jun. 01, 2024

Jun. 01, 2024

Secured Debt [Member] | 3.80% Senior Notes, due June 1, 2049 [Member]

Long-Term Debt [Line Items]

Interest percentage

3.80%

3.80%

Aggregate principal amount

$ 500,000,000

$ 500,000,000

Due date

Jun. 01, 2049

Jun. 01, 2049

Secured Debt [Member] | 4.15% Senior Notes Due June 1, 2032 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.15%

Aggregate principal amount

$ 400,000,000

$ 400,000,000

Redemption percentage

4.15%

Due date

Jun. 01, 2032

Secured Debt [Member] | 4.60% Senior Notes due June 1, 2052 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.60%

Aggregate principal amount

$ 400,000,000

$ 400,000,000

Redemption percentage

4.60%

Due date

Jun. 01, 2052

Secured Debt [Member] | 4.10% Fixed Senior Notes Due June 1, 2022 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.10%

4.10%

Aggregate principal amount

$ 400,000,000

Due date

Jun. 01, 2022

Jun. 01, 2022

Secured Debt [Member] | 4.55% Senior Notes due September 15, 2032 [Member]

Long-Term Debt [Line Items]

Interest percentage

4.55%

Aggregate principal amount

$ 700,000,000

Due date

Sep. 15, 2032

Secured Debt [Member] | 4.95% Senior Notes due September 15, 2052

Long-Term Debt [Line Items]

Interest percentage

4.95%

Aggregate principal amount

$ 500,000,000

Due date

Sep. 15, 2052

Unsecured Debt [Member] | Notes 2022 [Member]

Long-Term Debt [Line Items]

Repayments of long-term debt

$ 482,000,000

Aggregate principal amount

$ 400,000,000

Redemption percentage

100%

Unsecured Debt [Member] | January, 2022 Term Loan Credit Agreement Maturing April 29, 2023 [Member]

Long-Term Debt [Line Items]

Term loan

$ 1,300,000,000

Long-Term Debt (Schedule Of Lon

Long-Term Debt (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 15, 2022	Sep. 08, 2022	May 20, 2022
Debt Instrument [Line Items]
Unamortized discount and debt issuance costs	$ (117)	$ (95)
Less amount due currently	(100)	(882)
Long-term debt, less amounts due currently (Note 6)	11,128	9,150
Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	11,245	10,127
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 11,345	10,127
4.10% Fixed Senior Notes Due June 1, 2022 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt		$ 400
Interest percentage	4.10%	4.10%
Due date	Jun. 01, 2022	Jun. 01, 2022
7.00% Fixed Debentures Due September 1, 2022 [Member]
Debt Instrument [Line Items]
Interest percentage	7%
7.00% Fixed Debentures Due September 1, 2022 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt		$ 482
Interest percentage	7%	7%
Due date	Sep. 01, 2022	Sep. 01, 2022
2.75% Senior Notes due June 1, 2024 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 500	$ 500
Interest percentage	2.75%	2.75%
Due date	Jun. 01, 2024	Jun. 01, 2024
2.95% Fixed Senior Notes Due April 1, 2025 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 350	$ 350
Interest percentage	2.95%	2.95%
Due date	Apr. 01, 2025	Apr. 01, 2025
0.55% Senior Notes Due October 1, 2025 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 450	$ 450
Interest percentage	0.55%	0.55%
Due date	Oct. 01, 2025	Oct. 01, 2025
3.86% Senior Notes, Series A, due December 3, 2025 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 174	$ 174
Interest percentage	3.86%	3.86%
Due date	Dec. 03, 2025	Dec. 03, 2025
3.86% Senior Notes, Series B, due January 14, 2026 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 38	$ 38
Interest percentage	3.86%	3.86%
Due date	Jan. 14, 2026	Jan. 14, 2026
3.70% Fixed Senior Notes Due November 15, 2028 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 650	$ 650
Interest percentage	3.70%	3.70%
Due date	Nov. 15, 2028	Nov. 15, 2028
5.75% Fixed Senior Notes Due March 15, 2029 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 318	$ 318
Interest percentage	5.75%	5.75%
Due date	Mar. 15, 2029	Mar. 15, 2029
2.75% Senior Notes Due May 15, 2030 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 700	$ 700
Interest percentage	2.75%	2.75%
Due date	May 15, 2030	May 15, 2030
7.00% Fixed Senior Notes Due May 1, 2032 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 494	$ 494
Interest percentage	7%	7%
Due date	May 01, 2032	May 01, 2032
4.15% Senior Notes Due June 1, 2032 [Member]
Debt Instrument [Line Items]
Interest percentage	4.15%
4.15% Senior Notes Due June 1, 2032 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 400				$ 400
Interest percentage	4.15%
Due date	Jun. 01, 2032
4.55% Senior Notes due September 15, 2032 [Member]
Debt Instrument [Line Items]
Secured long-term debt				$ 700
4.55% Senior Notes due September 15, 2032 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 700
Interest percentage	4.55%
Due date	Sep. 15, 2032
7.25% Fixed Senior Notes Due January 15, 2033 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 323	$ 323
Interest percentage	7.25%	7.25%
Due date	Jan. 15, 2033	Jan. 15, 2033
7.50% Fixed Senior Notes Due September 1, 2038 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 300	$ 300
Interest percentage	7.50%	7.50%
Due date	Sep. 01, 2038	Sep. 01, 2038
5.25% Fixed Senior Notes Due September 30, 2040 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 475	$ 475
Interest percentage	5.25%	5.25%
Due date	Sep. 30, 2040	Sep. 30, 2040
4.55% Fixed Senior Notes Due December 1, 2041 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 400	$ 400
Interest percentage	4.55%	4.55%
Due date	Dec. 01, 2041	Dec. 01, 2041
5.30% Fixed Senior Notes Due June 1, 2042 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 348	$ 348
Interest percentage	5.30%	5.30%
Due date	Jun. 01, 2042	Jun. 01, 2042
3.75% Fixed Senior Notes Due April 1, 2045 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 550	$ 550
Interest percentage	3.75%	3.75%
Due date	Apr. 01, 2045	Apr. 01, 2045
3.80% Fixed Senior Notes Due September 30, 2047 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 325	$ 325
Interest percentage	3.80%	3.80%
Due date	Sep. 30, 2047	Sep. 30, 2047
4.10% Fixed Senior Notes Due November 15, 2048 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 450	$ 450
Interest percentage	4.10%	4.10%
Due date	Nov. 15, 2048	Nov. 15, 2048
3.80% Senior Notes, due June 1, 2049 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 500	$ 500
Interest percentage	3.80%	3.80%
Due date	Jun. 01, 2049	Jun. 01, 2049
3.10% Senior Notes, due September 15, 2049 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 700	$ 700
Interest percentage	3.10%	3.10%
Due date	Sep. 15, 2049	Sep. 15, 2049
3.70% Senior Notes Due May 15, 2050 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 400	$ 400
Interest percentage	3.70%	3.70%
Due date	May 15, 2050	May 15, 2050
2.70% Senior Notes Due November 15, 2051 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 500	$ 500
Interest percentage	2.70%	2.70%
Due date	Nov. 15, 2051	Nov. 15, 2051
4.60% Senior Notes due June 1, 2052 [Member]
Debt Instrument [Line Items]
Interest percentage	4.60%
4.60% Senior Notes due June 1, 2052 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 400				$ 400
Interest percentage	4.60%
Due date	Jun. 01, 2052
4.95% Senior Notes due September 15, 2052
Debt Instrument [Line Items]
Secured long-term debt			$ 500
4.95% Senior Notes due September 15, 2052 | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 500
Interest percentage	4.95%
Due date	Sep. 15, 2052
5.35% Senior Notes Due October 1, 2052 [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 300	$ 300
Interest percentage	5.35%	5.35%
Due date	Oct. 01, 2052	Oct. 01, 2052
June 2021 Term Loan Credit Agreement Maturing August 15, 2022 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Term loan	$ 100

Long-Term Debt (Schedule Of L_2

Long-Term Debt (Schedule Of Long-Term Debt Maturity) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Long-Term Debt [Abstract]
2023	$ 100
2024	500
2025	974
2026	38
Thereafter	9,733
Total	$ 11,345

Commitments And Contingencies_2

Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2021
Operating leases treated as capital leases	$ 5		$ 3
Lessee, Operating Lease, Term of Contract	20 years
Percentage of full time employees represented by labor union	17%
January12018 To December312022 Member
Business Combination, Minimum Capital Expenditures Over Five Year Period	$ 7.5
Capital expenditures	$ 11,900
Scenario, Forecast [Member]
2023 required efficiency spending amount		$ 52

Commitments And Contingencies_3

Commitments And Contingencies (Schedule Of Lease Information) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Commitments And Contingencies [Abstract]
Operating lease ROU and other assets (noncurrent)	$ 145	$ 146
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating and other current liabilities	$ 38	$ 37
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Operating lease and other obligations (noncurrent)	$ 131	$ 133
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities , Noncurrent
Operating lease obligations	$ 169	$ 170
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities
Weighted-average remaining lease term (in years)	6 years	7 years
Weighted-average discount rate	2.60%	2.50%

Commitments And Contingencies_4

Commitments And Contingencies (Schedule Of Lease Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments And Contingencies [Abstract]
Operating lease costs (including amounts allocated to property, plant and equipment)	$ 52	$ 51	$ 42
Short-term lease costs	9	11	10
Total operating lease costs	61	62	52
Cash paid for amounts included in the measurement of lease liabilities	49	40	35
ROU assets obtained in exchange for operating lease obligations	$ 42	$ 52	$ 72

Commitments And Contingencies_5

Commitments And Contingencies (Schedule Of Operating Lease Maturity) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Commitments And Contingencies [Abstract]
2023	$ 42
2024	33
2025	24
2026	16
2027	12
Thereafter	53
Total undiscounted lease payments	180
Less imputed interest	(11)
Total future minimum lease payments	$ 169	$ 170

Membership Interests (Narrative

Membership Interests (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 17, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 18, 2023
Subsequent Event [Line Items]
Cash restricted for distribution under the capital structure restriction		$ 1,479,000
Regulatory capitalization ratio, debt		57.50%
Regulatory capitalization ratio, equity		42.50%
Current regulatory capitalization ratio, debt		53.50%
Current regulatory capitalization ratio, equity		46.50%
Members contribution		$ 425,000	$ 705,000	$ 788,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash restricted for distribution under the capital structure restriction					$ 106,000
Members contribution	$ 106,000

Membership Interests (Schedule

Membership Interests (Schedule Of Cash Capital Contributions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Members contribution	$ 425	$ 705	$ 788
February 17, 2022 [Member]
Related Party Transaction [Line Items]
Payment Date	Feb. 17, 2022
Members contribution	$ 106
April 26, 2022 [Member]
Related Party Transaction [Line Items]
Payment Date	Apr. 26, 2022
Members contribution	$ 106
July 26, 2022 [Member]
Related Party Transaction [Line Items]
Payment Date	Jul. 26, 2022
Members contribution	$ 106
October 24, 2022 [Member]
Related Party Transaction [Line Items]
Payment Date	Oct. 24, 2022
Members contribution	$ 106

Membership Interests (Schedul_2

Membership Interests (Schedule Of Distributions Paid) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends Payable [Line Items]
Amount	$ 425	$ 839	$ 356
Payment One FY 2022 [Member]
Dividends Payable [Line Items]
Declaration Date	Feb. 18, 2022
Payment Date	Feb. 18, 2022
Amount	$ 106
Payment Two FY 2022 [Member]
Dividends Payable [Line Items]
Declaration Date	Apr. 27, 2022
Payment Date	Apr. 28, 2022
Amount	$ 106
Payment Three FY 2022 [Member]
Dividends Payable [Line Items]
Declaration Date	Jul. 27, 2022
Payment Date	Jul. 28, 2022
Amount	$ 106
Payment Four Fy 2022 [Member]
Dividends Payable [Line Items]
Declaration Date	Oct. 25, 2022
Payment Date	Oct. 26, 2022
Amount	$ 106

Membership Interests (Schedul_3

Membership Interests (Schedule Of Changes To Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (131,000,000)
Balance at end of period	(162,000,000)	$ (131,000,000)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax			$ 6,000,000
Tax expense cash flow hedges reclassified from AOCI	1,000,000	0	1,000,000
Cash Flow Hedges - Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(36,000,000)	(39,000,000)	(18,000,000)
Defined benefit pension plans
Amounts reclassified from accumulated other comprehensive income (loss) and reported in interest expense and related charges			(24,000,000)
Amounts reclassified from accumulated other comprehensive income (loss) to the capital account (Note 1)			3,000,000
Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense of $1)	2,000,000	3,000,000
Balance at end of period	(34,000,000)	(36,000,000)	(39,000,000)
Defined Benefit Pension and OPEB Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(95,000,000)	(112,000,000)	(121,000,000)
Defined benefit pension plans	(33,000,000)	17,000,000	9,000,000
Amounts reclassified from accumulated other comprehensive income (loss) and reported in interest expense and related charges
Amounts reclassified from accumulated other comprehensive income (loss) to the capital account (Note 1)
Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense of $1)
Balance at end of period	(128,000,000)	(95,000,000)	(112,000,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(131,000,000)	(151,000,000)	(139,000,000)
Defined benefit pension plans	(33,000,000)	17,000,000	9,000,000
Amounts reclassified from accumulated other comprehensive income (loss) and reported in interest expense and related charges			(24,000,000)
Amounts reclassified from accumulated other comprehensive income (loss) to the capital account (Note 1)			3,000,000
Cash flow hedge amounts reclassified from AOCI and reported in interest expense and related charges (net of tax expense of $1)	2,000,000	3,000,000
Balance at end of period	$ (162,000,000)	$ (131,000,000)	$ (151,000,000)

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Regulatory assets	$ 1,502,000	$ 1,547,000
Net Regulatory Assets	$ (1,512,000)	(1,329,000)
Number of OPEB plans | item	2
Rolling period	4 years
Percentage of gains and losses	25%
Second pool representation of total investments, percentage	25%
Gain Due To Increase In Discount Rates [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain	$ 662,000
Thrift Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	$ 26,000	24,000	$ 23,000
Oncor Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of corporate bonds | item	1,138
Pension And OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Regulatory Assets	$ 346,000	581,000
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain	662,000	95,000	(302,000)
Net gain (loss)	(50,000)	164,000	(61,000)
Unfunded liability	$ (750,000)	(689,000)	(856,000)
Weighted-average interest crediting rate assumption for Cash Balance Formula	3%
Amortization of net loss	$ (32,000)	$ (52,000)	$ (48,000)
Expected funding, 2019	5,000
Expected funding, 2019 to 2023	$ 356,000
Discount rate	2.75%	2.40%	3.13%
Expected return on plan assets	4.70%	4.35%	4.94%
Cash contributions	$ 6,000	$ 21,000	$ 134,000
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain	190,000	136,000	(20,000)
Net gain (loss)	157,000	142,000	(14,000)
Unfunded liability	$ (544,000)	(715,000)	(868,000)
Number of corporate bonds | item	504
Amortization of net loss	$ 1,000	(18,000)	(10,000)
Amortization of prior service cost		$ (17,000)	$ (20,000)
Expected funding, 2019	22,000
Expected funding, 2019 to 2023	$ 126,000
Discount rate	2.91%	2.58%	3.29%
Expected return on plan assets	5.61%	5.24%	5.90%
Cash contributions	$ 35,000	$ 35,000	$ 35,000
Oncor Cash Balance Formula Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employee's contribution match by employer	100%
Percentage of employee's contribution matched 100% by employer	6%
Oncor Traditional Retirement Plan Formula Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employee's contribution match by employer	75%
Percentage of employee's contribution matched 100% by employer	6%

Employee Benefit Plans (Schedul

Employee Benefit Plans (Schedule Of Pension And OPEB Plan Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total benefit costs	$ 49	$ 70	$ 71
Net adjustments	(6)	(25)	(24)
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total benefit costs	20	25	19
Net adjustments	$ 11	$ 6	$ 11

Employee Benefit Plans (Pension

Employee Benefit Plans (Pension and OPEB Costs Recognized as Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Assumptions Used to Determine Net Periodic Pension and OPEB Costs:
Discount rate	2.75%	2.40%	3.13%
Expected return on plan assets	4.70%	4.35%	4.94%
Rate of compensation increase	4.98%	4.80%	4.64%
Components of net OPEB costs:
Service cost	$ 31,000	$ 33,000	$ 29,000
Interest cost	90,000	84,000	103,000
Expected return on assets	(104,000)	(99,000)	(109,000)
Amortization of net loss	32,000	52,000	48,000
Net costs	49,000	70,000	71,000
Net adjustments	(6,000)	(25,000)	(24,000)
Net pension costs recognized as operation and maintenance expense or other deductions	43,000	45,000	47,000
Other Changes in Plan Assets and Benefit Obligations Recognized as Regulatory Assets or in Other Comprehensive Income:
Net loss (gain)	50,000	(164,000)	61,000
Amortization of net loss	(32,000)	(52,000)	(48,000)
Total recognized as regulatory assets or other comprehensive income	18,000	(216,000)	13,000
Net pension costs recognized as operation and maintenance expense or other deductions	43,000	45,000	47,000
Total recognized in net periodic pension and OPEB costs and as regulatory assets or other comprehensive income	$ 61,000	$ (171,000)	$ 60,000
OPEB Plan [Member]
Assumptions Used to Determine Net Periodic Pension and OPEB Costs:
Discount rate	2.91%	2.58%	3.29%
Expected return on plan assets	5.61%	5.24%	5.90%
Components of net OPEB costs:
Service cost	$ 4,000	$ 5,000	$ 6,000
Interest cost	25,000	26,000	32,000
Expected return on assets	(8,000)	(7,000)	(8,000)
Amortization of prior service cost (credit)		(17,000)	(20,000)
Amortization of net loss	(1,000)	18,000	10,000
Curtailment cost (credit)			(1,000)
Net costs	20,000	25,000	19,000
Net adjustments	11,000	6,000	11,000
Net pension costs recognized as operation and maintenance expense or other deductions	31,000	31,000	30,000
Other Changes in Plan Assets and Benefit Obligations Recognized as Regulatory Assets or in Other Comprehensive Income:
Curtailment			2,000
Net loss (gain)	(157,000)	(142,000)	14,000
Amortization of net loss	1,000	(18,000)	(10,000)
Amortization of prior service cost (credit)		17,000	20,000
Total recognized as regulatory assets or other comprehensive income	(156,000)	(143,000)	26,000
Net pension costs recognized as operation and maintenance expense or other deductions	31,000	31,000	30,000
Total recognized in net periodic pension and OPEB costs and as regulatory assets or other comprehensive income	$ (125,000)	$ (112,000)	$ 56,000

Employee Benefit Plans (Assumpt

Employee Benefit Plans (Assumptions Used To Determine Benefit Obligations) (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.94%	2.75%	2.40%
Rate of compensation increase	5.34%	4.98%	4.80%
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.19%	2.91%	2.58%

Employee Benefit Plans (Change

Employee Benefit Plans (Change In Project Benefit Obligations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	$ 3,358,000	$ 3,596,000	$ 3,400,000
Service cost	31,000	33,000	29,000
Interest cost	90,000	84,000	103,000
Actuarial (gain) loss	(662,000)	(95,000)	302,000
Benefits paid	(169,000)	(171,000)	(165,000)
Settlement charges	(81,000)	(89,000)	(73,000)
Projected benefit obligation at end of year	2,567,000	3,358,000	3,596,000
Accumulated benefit obligation at end of year	2,452,000	3,199,000	3,433,000
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	861,000	1,013,000	999,000
Service cost	4,000	5,000	6,000
Interest cost	25,000	26,000	32,000
Participant contributions	19,000	19,000	18,000
Actuarial (gain) loss	(190,000)	(136,000)	20,000
Benefits paid	(55,000)	(66,000)	(63,000)
Curtailment			(1,000)
Projected benefit obligation at end of year	$ 664,000	$ 861,000	$ 1,013,000

Employee Benefit Plans (Chang_2

Employee Benefit Plans (Change In Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets at beginning of year	$ 2,669	$ 2,740	$ 2,494
Actual return (loss) on assets	(608)	168	350
Employer contributions	6	21	134
Benefits paid	(169)	(171)	(165)
Settlement charges	(81)	(89)	(73)
Fair value of assets at end of year	1,817	2,669	2,740
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Benefit Obligation	2,567	3,358	3,596	$ 3,400
Defined Benefit Plan, Fair Value of Plan Assets	1,817	2,669	2,740	2,494
Defined Benefit Plan, Funded Status of Plan	(750)	(689)	(856)
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of assets at beginning of year	146	145	141
Actual return (loss) on assets	(25)	13	14
Employer contributions	35	35	35
Participant contributions	19	19	18
Benefits paid	(55)	(66)	(63)
Fair value of assets at end of year	120	146	145
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Defined Benefit Plan, Benefit Obligation	664	861	1,013	999
Defined Benefit Plan, Fair Value of Plan Assets	120	146	145	$ 141
Defined Benefit Plan, Funded Status of Plan	$ (544)	$ (715)	$ (868)

Employee Benefit Plans (Amounts

Employee Benefit Plans (Amounts Recognized In Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Other noncurrent liabilities	$ (1,394)	$ (1,503)
Accumulated other comprehensive net loss	(162)	(131)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other current liabilities	(5)	(5)
Other noncurrent liabilities	(764)	(705)
Net liability recognized	(769)	(710)
Other noncurrent assets	19	21
Net regulatory assets recognized	337	355
Net assets recognized	356	376
Accumulated other comprehensive net loss	129	93
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Other current liabilities	(16)	(12)
Other noncurrent liabilities	(528)	(703)
Net liability recognized	(544)	(715)
Net regulatory assets recognized	(180)	(27)
Net assets recognized	$ (180)	(27)
Accumulated other comprehensive net loss		$ 3

Employee Benefit Plans (Sched_2

Employee Benefit Plans (Schedule Of Assumed Health Care Cost Trend Rates) (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Year that the rate reaches the ultimate trend rate	2032
Not Medicare Eligible [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care and prescription drug cost trend rate assumed for next year	7.40%	6.70%	6.90%
Rate to which the cost trend is expected to decline (the ultimate trend rate)	4.50%	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2032	2029	2029
Medicare Eligible [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care and prescription drug cost trend rate assumed for next year	8.30%	7.50%	7.80%
Rate to which the cost trend is expected to decline (the ultimate trend rate)	4.50%	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2032	2031	2030

Employee Benefit Plans (Sched_3

Employee Benefit Plans (Schedule Of Projected Benefit Obligations And Accumulated Benefit Obligations In Excess Of Plan Assets Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Vistra Retirement Plan [Member]
Projected benefit obligations	$ 187	$ 185	$ 208
Accumulated benefit obligations	140	139
Plan assets	159
Pension Plan [Member]
Projected benefit obligations	2,567	3,358
Accumulated benefit obligations	2,452	3,199
Plan assets	1,817	2,669
OPEB Plan [Member]
Accumulated benefit obligations	664	861
Plan assets	$ 120	$ 146

Employee Benefit Plans (Sched_4

Employee Benefit Plans (Schedule Of Target Asset Allocation Ranges By Asset Category) (Details)	Dec. 31, 2022
International Equities [Member] | Recoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	8%
International Equities [Member] | Recoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	16%
International Equities [Member] | Nonrecoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5%
International Equities [Member] | Nonrecoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	11%
US Equities [Member] | Recoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	17%
US Equities [Member] | Recoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	25%
US Equities [Member] | Nonrecoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	11%
US Equities [Member] | Nonrecoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	17%
Real Estate [Member] | Recoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	7%
Real Estate [Member] | Recoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	11%
Real Estate [Member] | Nonrecoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	3%
Real Estate [Member] | Nonrecoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	7%
Credit Strategies [Member] | Recoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	3%
Credit Strategies [Member] | Recoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	7%
Credit Strategies [Member] | Nonrecoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	3%
Credit Strategies [Member] | Nonrecoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	7%
Fixed Income [Member] | Recoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	48%
Fixed Income [Member] | Recoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	58%
Fixed Income [Member] | Nonrecoverable [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	65%
Fixed Income [Member] | Nonrecoverable [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	75%

Employee Benefit Plans (Sched_5

Employee Benefit Plans (Schedule Of Assets Fair Value Measured On Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	$ 1,817	$ 2,669	$ 2,740	$ 2,494
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	120	146	$ 145	$ 141
Interest-bearing Cash [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	20	9
Interest-bearing Cash [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	9	9
US Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	38	66
US Equities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	13	16
International Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	67	139
International Equities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	11	17
Corporate Bond Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	543	879
Corporate Bond Securities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	28	37
US Treasury Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	41	55
US Treasury Securities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	2	2
Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	41	50
Other [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	17	18
Plan Assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	750	1,198
Plan Assets [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	80	99
Fair Value, Inputs, Level 1 [Member] | Interest-bearing Cash [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	9	9
Fair Value, Inputs, Level 1 [Member] | US Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	35	65
Fair Value, Inputs, Level 1 [Member] | US Equities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	13	16
Fair Value, Inputs, Level 1 [Member] | International Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	67	138
Fair Value, Inputs, Level 1 [Member] | International Equities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	11	17
Fair Value, Inputs, Level 1 [Member] | Other [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	15	16
Fair Value, Inputs, Level 1 [Member] | Plan Assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	102	203
Fair Value, Inputs, Level 1 [Member] | Plan Assets [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	48	58
Fair Value, Inputs, Level 2 [Member] | Interest-bearing Cash [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	20	9
Fair Value, Inputs, Level 2 [Member] | US Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	3	1
Fair Value, Inputs, Level 2 [Member] | International Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy		1
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	543	879
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	28	37
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	41	55
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	2	2
Fair Value, Inputs, Level 2 [Member] | Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	41	50
Fair Value, Inputs, Level 2 [Member] | Other [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	2	2
Fair Value, Inputs, Level 2 [Member] | Plan Assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	648	995
Fair Value, Inputs, Level 2 [Member] | Plan Assets [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total assets in the fair value hierarchy	32	41
NAV [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	1,067	1,471
NAV [Member] | OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan assets	$ 40	$ 47

Employee Benefit Plans (Sched_6

Employee Benefit Plans (Schedule Of Expected Long-Term Rate Of Return On Assets Assumptions) (Details)	12 Months Ended
	Dec. 31, 2022
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	6.05%
Pension Plan [Member] | International Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	7.83%
Pension Plan [Member] | US Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	7.40%
Pension Plan [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	4.80%
Pension Plan [Member] | Credit Strategies [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	7%
Pension Plan [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	5.17%
Pension Plan [Member] | Oncor Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	5.83%
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	6.94%
OPEB Plan [Member] | 401(h) Accounts [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	7.37%
OPEB Plan [Member] | Life Insurance VEBA [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	6.95%
OPEB Plan [Member] | Union VEBA [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	6.95%
OPEB Plan [Member] | Non-union VEBA [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	3.30%
OPEB Plan [Member] | Shared Retiree Veba [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	3.30%
OPEB Plan [Member] | Vistra Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term rate of return	6.47%

Employee Benefit Plans (Sched_7

Employee Benefit Plans (Schedule Of Contributions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total contributions	$ 6	$ 21	$ 134
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total contributions	$ 35	$ 35	$ 35

Employee Benefit Plans (Sched_8

Employee Benefit Plans (Schedule Of Estimated Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2023	$ 176
2024	180
2025	184
2026	186
2027	186
2028-32	925
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2023	45
2024	47
2025	48
2026	48
2027	49
2028-32	$ 242

Related-Party Transactions (Nar

Related-Party Transactions (Narrative) (Details) - USD ($)		12 Months Ended
	Feb. 17, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Revenue		$ 5,243,000,000	$ 4,764,000,000	$ 4,511,000,000
Members contribution		425,000,000	705,000,000	788,000,000
Cash payments to vendors		639,000	592,000	629,000
Sharyland Distribution & Transmission Services (SDTS) [Member]
Related Party Transaction [Line Items]
Revenue		$ 11,000,000	10,000,000	13,000,000
Subsequent Event [Member]
Related Party Transaction [Line Items]
Members contribution	$ 106,000,000
Sempra Texas Holdings [Member] | Sharyland Distribution & Transmission Services (SDTS) [Member]
Related Party Transaction [Line Items]
Percentage of membership interest owned by non-controlling owners		50%
Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Tax related payments (received from)		$ 103,000	$ 116,000	$ 119,000

Related-Party Transactions (Sch

Related-Party Transactions (Schedule Of Amounts Payable To (Receivables From) Related Parties) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Net payable (receivable)	$ 45	$ 18
Texas [Member]
Related Party Transaction [Line Items]
Texas margin tax payable	27	24
Federal [Member]
Related Party Transaction [Line Items]
Federal income taxes payable (receivable)	18	(6)
Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Net payable (receivable)	41	19
Sempra Texas Holdings [Member] | Texas [Member]
Related Party Transaction [Line Items]
Texas margin tax payable	27	24
Sempra Texas Holdings [Member] | Federal [Member]
Related Party Transaction [Line Items]
Federal income taxes payable (receivable)	14	(5)
Texas Transmission Investment LLC [Member]
Related Party Transaction [Line Items]
Net payable (receivable)	4	(1)
Texas Transmission Investment LLC [Member] | Federal [Member]
Related Party Transaction [Line Items]
Federal income taxes payable (receivable)	$ 4	$ (1)

Related-Party Transactions (S_2

Related-Party Transactions (Schedule Of Cash Payments Made To (Received From) Related Parties) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Federal income taxes	$ 99	$ 61	$ 87
Texas margin taxes	24	23	22
Total payments	123	84	109
Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Federal income taxes	79	49	70
Texas margin taxes	24	23	22
Total payments	103	72	92
Texas Transmission Investment LLC [Member]
Related Party Transaction [Line Items]
Federal income taxes	20	12	17
Total payments	$ 20	$ 12	$ 17

Supplementary Financial Infor_3

Supplementary Financial Information (Narrative) (Details) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2022 USD ($) customer	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($) customer
Supplemental Financial Information [Line Items]
Number of largest customers | customer	2
Restricted cash	$ 16	$ 13		$ 16
Face value of life insurance policies	175	198		175
Net cash surrender values	$ 94	99		$ 94
Depreciation expense as percentage of average depreciable property	2.70%
Aggregate amortization expenses	$ 76	$ 50	$ 62
Land Easements [Member]
Supplemental Financial Information [Line Items]
Weighted average remaining useful life	83 years
Capitalized Software [Member]
Supplemental Financial Information [Line Items]
Weighted average remaining useful life	9 years
Trade Accounts Receivable [Member]
Supplemental Financial Information [Line Items]
Number of largest customers | customer				2
Trade Accounts Receivable [Member] | Customers [Member] | Nonaffiliated REP [Member]
Supplemental Financial Information [Line Items]
Concentration risk percentage	23%	22%
Trade Accounts Receivable [Member] | Customers [Member] | Second Nonaffiliated REP [Member]
Supplemental Financial Information [Line Items]
Concentration risk percentage	20%	21%

Supplementary Financial Infor_4

Supplementary Financial Information (Schedule Of Other Deductions And (Income)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplementary Financial Information [Abstract]
Professional fees	$ 7	$ 9	$ 6
Recoverable pension and OPEB - non-service costs	56	54	55
Non-recoverable pension and OPEB	2	3	4
Gain on sale of non-utility property	(12)	(1)
AFUDC - equity income	(36)	(27)	(29)
Interest and investment loss (income) – net	2	(8)	(4)
Other	1	1	1
Total other deductions and (income) - net	$ 20	$ 31	$ 33

Supplementary Financial Infor_5

Supplementary Financial Information (Schedule Of Interest Expense And Related Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplementary Financial Information [Abstract]
Interest	$ 453	$ 415	$ 413
Amortization of discount, premium and debt issuance costs	10	11	11
Less AFUDC – capitalized interest portion	(18)	(13)	(19)
Total interest expense and related charges	$ 445	$ 413	$ 405

Supplementary Financial Infor_6

Supplementary Financial Information (Schedule Of Trade Accounts And Other Receivables) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Supplementary Financial Information [Abstract]
Gross trade accounts and other receivables	$ 897	$ 750
Allowance for uncollectible accounts	(13)	(12)
Trade accounts receivable - net	$ 884	$ 738

Supplementary Financial Infor_7

Supplementary Financial Information (Summary of Investments And Other Property) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Supplementary Financial Information [Abstract]
Assets related to employee benefit plans	$ 123	$ 133
Non-utility property - land	12	20
Other	2	2
Total investments and other property	$ 137	$ 155

Supplementary Financial Infor_8

Supplementary Financial Information (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property Plant and Equipment [Line Items]
Total assets in service	$ 33,256	$ 31,029
Less accumulated depreciation	9,054	8,659
Net of accumulated depreciation	24,202	22,370
Construction work in progress	953	557
Held for future use	48	27
Property, plant and equipment - net	25,203	22,954
Distribution [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 17,226	15,994
Composite depreciation rate	2.50%
Avg. life	39 years 7 months 6 days
Transmission [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 13,874	13,075
Composite depreciation rate	2.90%
Avg. life	34 years 4 months 24 days
Other Assets [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 2,156	$ 1,960
Composite depreciation rate	5.90%
Avg. life	17 years

Supplementary Financial Infor_9

Supplementary Financial Information (Schedule Of Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,845	$ 1,707
Accumulated Amortization	563	568
Net	1,282	1,139
Land Easements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	662	641
Accumulated Amortization	122	117
Net	540	524
Capitalized Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,183	1,066
Accumulated Amortization	441	451
Net	$ 742	$ 615

Supplementary Financial Info_10

Supplementary Financial Information (Schedule Of Estimated Aggregate Amortization Expenses) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Supplementary Financial Information [Abstract]
2023	$ 86
2024	85
2025	85
2026	85
2027	$ 85

Supplementary Financial Info_11

Supplementary Financial Information (Schedule Of Operating Lease, Third Party Joint Project And Other Obligations) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Supplementary Financial Information [Abstract]
Operating lease liabilities	$ 131	$ 133
Investment tax credits	3	4
Customer advances for construction – noncurrent	71	30
Other	70	64
Total employee benefit obligations and other	$ 275	$ 231

Supplementary Financial Info_12

Supplementary Financial Information (Schedule Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplementary Financial Information [Abstract]
Interest	$ 441	$ 409	$ 406
Less capitalized interest	(18)	(13)	(19)
Interest payments (net of amounts capitalized)	423	396	387
Federal	99	61	87
State	24	23	22
Total payments in lieu of income taxes	123	84	109
Construction expenditures financed through accounts payable (investing)	$ 305	254	254
Transfer of title to assets constructed for and prepaid by LP&L		$ 150
Debt exchange offering (financing)			$ 300