Oncor Electric Delivery 10-Q 6 Aug 24 2024 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 06, 2024	Dec. 31, 2023
Document Type	10-Q
Document Quarterly Report	true
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Period End Date	Jun. 30, 2024
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
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
Entity Common Stock, Shares Outstanding		0
Entity Central Index Key	0001193311
Document Fiscal Period Focus	Q2
Amendment Flag	false
Oncor Electric Delivery Holdings Company LLC [Member]
Entity Outstanding Membership Interests		80.25%
Texas Transmission [Member]
Entity Outstanding Membership Interests		19.75%

Condensed Statements of Consoli

Condensed Statements of Consolidated Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Condensed Statements of Consolidated Income [Abstract]
Operating revenues (Note 3)	$ 1,492	$ 1,343	$ 2,950	$ 2,635
Operating expenses:
Wholesale transmission service	351	322	702	643
Operation and maintenance	295	271	594	534
Depreciation and amortization	261	242	518	482
Provision in lieu of income taxes (Note 9)	53	41	100	68
Taxes other than amounts related to income taxes	136	141	280	286
Write-off of rate base disallowances				55
Total operating expenses	1,096	1,017	2,194	2,068
Operating income	396	326	756	567
Other (income) and deductions – net (Note 11)	(16)	(5)	(30)	2
Non-operating benefit in lieu of income taxes		(2)	(1)	(8)
Interest expense and related charges (Note 11)	161	133	311	256
Write-off of non-operating rate base disallowances				14
Net income	$ 251	$ 200	$ 476	$ 303

Condensed Statements of Conso_2

Condensed Statements of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Condensed Statements of Consolidated Comprehensive Income [Abstract]
Net income	$ 251	$ 200	$ 476	$ 303
Other comprehensive (loss) income:
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	1		2	1
Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax)	(13)		(13)
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	(9)		(9)
Defined benefit pension plans	1		1	(20)
Total other comprehensive (loss) income	(20)		(19)	(19)
Comprehensive income	$ 231	$ 200	$ 457	$ 284

Condensed Statements of Conso_3

Condensed Statements of Consolidated Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows - operating activities:
Net income	$ 476	$ 303
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization, including regulatory amortization	602	536
Write-off of rate base disallowances		69
Provision in lieu of deferred income taxes - net	57	23
Changes in operating assets and liabilities:
Accounts receivable	(202)	(78)
Inventories	(28)	(49)
Accounts payable - trade	162	(6)
Regulatory assets – deferred revenues (Note 2)	(51)	(120)
Regulatory assets – self-insurance reserve (Note 2)	(236)	(166)
Other assets and liabilities	(142)	19
Cash provided by operating activities	638	531
Cash flows - financing activities:
Issuances of senior secured notes (Note 5)	1,442	1,400
Repayments of senior secured notes (Note 5)	(500)
Borrowings under term loans		775
Repayments under term loans		(875)
Borrowings under AR Facility (Note 5)	540	425
Repayments under AR Facility (Note 5)	(400)	(100)
Borrowings under $500M Credit Facility (Note 5)	500
Net change in short-term borrowings (Note 4)	(282)	(198)
Contributions from members (Note 7)	480	221
Distributions to members (Note 7)	(251)	(255)
Debt discount, financing and reacquisition costs – net	(15)	(33)
Cash provided by financing activities	1,514	1,360
Cash flows - investing activities:
Capital expenditures	(2,196)	(1,890)
Sales tax audit settlement refund (Note 6)	56
Other - net	20	17
Cash used in investing activities	(2,120)	(1,873)
Net change in cash, cash equivalents and restricted cash	32	18
Cash, cash equivalents and restricted cash - beginning balance	151	98
Cash, cash equivalents and restricted cash - ending balance	$ 183	$ 116

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 20	$ 19
Restricted cash, current (Note 1)	32	24
Accounts receivable – net (Note 11)	1,150	944
Amounts receivable from members related to income taxes (Note 9)	23	4
Materials and supplies inventories - at average cost	369	341
Prepayments and other current assets (Note 11)	183	101
Total current assets	1,777	1,433
Restricted cash, noncurrent (Note 1)	131	108
Investments and other property (Note 11)	171	158
Property, plant and equipment – net (Note 11)	29,727	28,057
Goodwill (Note 1)	4,740	4,740
Regulatory assets (Note 2)	1,721	1,556
Right-of-use operating lease and other assets (Note 6)	153	142
Total assets	38,420	36,194
Current liabilities:
Short-term borrowings (Note 4)		282
Accounts payable – trade	811	600
Amounts payable to members related to income taxes (Note 9)	15	27
Accrued taxes other than amounts related to income	161	261
Accrued interest	127	117
Operating lease and other current liabilities (Note 6)	335	338
Total current liabilities	1,449	1,625
Long-term debt, noncurrent (Note 5)	14,862	13,294
Liability in lieu of deferred income taxes (Note 9)	2,412	2,320
Regulatory liabilities (Note 2)	2,951	3,000
Employee benefit plan obligations (Note 8)	1,430	1,442
Operating lease and other obligations (Notes 6 and 11)	422	305
Total liabilities	23,526	21,986
Commitments and contingencies (Note 6)
Membership interests (Note 7):
Capital account – number of units outstanding at June 30, 2024 and December 31, 2023 – 635,000,000	15,093	14,388
Accumulated other comprehensive loss	(199)	(180)
Total membership interests	14,894	14,208
Total liabilities and membership interests	$ 38,420	$ 36,194

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Aug. 06, 2024	Jun. 30, 2024	Dec. 31, 2023
Condensed Consolidated Balance Sheets [Abstract]
Capital account, units outstanding	635,000,000	635,000,000	635,000,000

Business and Significant Accoun

Business and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2024
Business and Significant Accounting Policies [Abstract]
BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES	1. 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 is only one reportable segment. 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 Sempra and its affiliates and any other direct or indirect 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 Sempra entity or any other 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 in the Sempra Acquisition. That transaction was approved by the PUCT in the Sempra Order, which order outlines certain ring-fencing measures, governance mechanisms and restrictions that apply to Oncor Holdings and Oncor 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. Our LLC Agreement requires PUCT approval of certain revisions to the agreement, including, among other things, revisions to our governance structure and other various ring-fencing measures. 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 LLC 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). 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 LLC 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 operation 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 such 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; and  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. Basis of Presentation These unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and related notes included in our 2023 Form 10-K. In the opinion of Oncor management, all adjustments (consisting of normal recurring accruals) necessary for a fair presentation of the results of operations and financial position have been made. We have evaluated all subsequent events through the date the financial statements were issued. All appropriate intercompany items and transactions have been eliminated in consolidation. The results of operations for an interim period may not give a true indication of results for a full year due to seasonality and other factors. Our condensed consolidated financial statements have been prepared in accordance with GAAP governing rate-regulated operations. Our condensed consolidated financial statements include the accounts of Oncor and its consolidated VIEs. 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 during the period. These estimates include, but are not limited to, the effects of regulation; recovery of long-lived assets; certain assumptions made in accounting for pension and OPEB; asset retirement obligations; income and other taxes; valuation of certain financial assets and liabilities; and accounting for contingencies. 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. Accounting for the Effects of Certain Types of Regulation 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. 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 as prescribed by the related tariff. See Note 3 for additional information regarding revenues. Derivatives and Hedging We are exposed to changes in interest rates and foreign currency exchange rates primarily as a result of our current and expected use of financing, including the Euro Notes. We have and may, from time to time, continue to utilize derivative instruments typically designated as cash flow or fair value hedges to help mitigate our exposure related to those risks. All derivative instruments are recorded on the balance sheet at fair value as a derivative asset or liability and changes in the fair value are recognized in net income if the criteria for hedge accounting are not met or if the instrument is not designated as a hedge. See Note 10 for more information regarding our derivative instruments. 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. 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 Condensed Consolidated Balance Sheets to the sum of such amounts reported on the Condensed Statements of Consolidated Cash Flows: At June 30, At December 31, 2024 2023 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 20 $ 19 Restricted cash, current (a) 32 24 Restricted cash, noncurrent (a) 131 108 Total cash, cash equivalents and restricted cash on the Condensed Statements of Consolidated Cash Flows $ 183 $ 151 ____________ (a) Restricted cash represents amounts held by Oncor for customer deposits that are subject to probable 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 separate escrow accounts. 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 6 for a discussion of contingencies. VIE We consolidate a VIE if we are the primary beneficiary of the VIE. Our determination of whether we are the primary beneficiary is based on qualitative and quantitative analyses, which assess:  the purpose and design of the VIE;  the nature of the VIE’s risks and the risks we absorb;  the power to direct activities that most significantly impact the economic performance of the VIE; and  the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. We will continue to evaluate our business operations and VIEs for any changes that may impact our determination of whether an entity is a VIE and if we are the primary beneficiary. Accounting Standards Updates (ASU) ASU 2023-07 Segment reporting ( ASC 280 ) In November 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-07, which expands reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU requires that a public entity disclose, on an annual and interim basis, significant segment expenses that are regularly provided to an entity's chief operating decision maker (CODM), a description of other segment items by reportable segment, and any additional measures of a segment's profit or loss used by the CODM when deciding how to allocate resources. A public entity that has a single reportable segment is also required to provide all the disclosures required by this ASU and all existing segment disclosures in ASC 280. Annual disclosures are required for fiscal years beginning after December 15, 2023. Interim disclosures are required for periods within fiscal years beginning after December 15, 2024. Retrospective application is required for all prior periods presented, and early adoption is permitted. We plan to adopt the standard on December 31, 2024 and as a result expect to provide enhanced disclosures about segment information. ASU 2023-09 Improvements to Income Tax Disclosures ( ASC 740) In December 2023, the FASB issued ASU 2023-09, which expands income tax disclosure requirements to include additional information related to the rate reconciliation of our effective tax rates to statutory rates, as well as additional disaggregation of taxes paid. This ASU also removed disclosures related to certain unrecognized tax benefits and deferred taxes. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. This ASU may be applied prospectively or retrospectively, and early adoption is permitted. We plan to adopt the standard on December 31, 2025 and are currently evaluating the effect of the standard on our financial reporting. All other newly issued accounting pronouncements not yet effective have been deemed either immaterial or not applicable.

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2024
Regulatory Matters [Abstract]
REGULATORY MATTERS	2. REGULATORY MATTERS Regulatory Proceedings System Resiliency Plan (PUCT Docket No. 56545) On May 6, 2024, we filed a system resiliency plan for PUCT approval pursuant to recently enacted Texas House Bill 2555 and related rules promulgated by the PUCT. On August 5, 2024, we filed a letter in the system resiliency plan proceeding noting that the parties have reached a settlement in principle and are working to finalize a written settlement agreement by August 16, 2024 for PUCT review and approval. The system resiliency plan as filed requests approval of approximately $ 2.9 billion in capital expenditures and $ 520 million in operation and maintenance expenses over a three -year period to enhance the resiliency of our transmission and distribution system. The system resiliency plan proposes various measures to address certain resiliency events, including extreme weather, wildfires, physical security threats, and cybersecurity threats. To the extent our system resiliency plan is approved by the PUCT, we intend to recover distribution-related costs through our interim DCRF rate adjustment, with the unrecovered distribution-related operation and maintenance expenses, depreciation expenses and return on the capital to be recognized as a regulatory asset. Capital Trackers Interim DCRF and TCOS rate adjustments, also known as capital trackers, allow us to recover, subject to reconciliation, the cost of certain distribution and transmission investments, respectively, before the investments are considered for prudency in a comprehensive base rate review. Under PUCT rules, we can file up to two interim DCRF rate adjustment applications in a calendar year for certain distribution-related investments and up to two interim TCOS rate adjustment applications in a calendar year to reflect changes in certain transmission-related investments. These interim rate applications are subject to a regulatory proceeding and PUCT approval. Investments included in these capital trackers are also subject to prudence review by the PUCT in the next comprehensive base rate review following such adjustments, with a potential for the PUCT to also order refunds of previously collected amounts if a particular investment is found to be imprudent or inappropriately included in an interim rate adjustment. TCOS revenues are also impacted by transmission billing units, which are updated annually effective January 1 each year to reflect certain changes in average ERCOT-wide peak electricity demand occurring during the previous calendar year. During the six months ended June 30, 2024, Onc or filed the following interim rate adjustment applications with the PUCT: Filing Type PUCT Docket No. Investment Through Filed Effective Date Annual Revenue Impact (a) DCRF 56306 December 2023 (b) March 2024 July 2024 $ 81 ____________ (a) Annual revenue impact represents the incremental annual revenue impact, after taking into account revenue effects of prior applicable rate adjustments. (b) Reflects distribution and functionalized distribution-related capital investments generally put into service during the period from July 1, 2023 through December 31, 2023. Comprehensive Base Rate Review (PUCT Docket No. 53601) In April 2023, the PUCT issued a final order in our comprehensive base rate review filed in May 2022 with the PUCT and the cities in our service territory that have retained original jurisdiction over rates. New base rates implementing the final order went into effect in May 2023. In June 2023, the PUCT issued an order on rehearing in response to the motions for rehearing filed by us and certain intervening parties in the proceeding. The order on rehearing made certain technical and typographical corrections to the final order, but otherwise affirmed the material provisions of the final order and did not require modification of the rates that went into effect in May 2023. In September 2023, we filed an appeal in Travis County District Court. The appeal sought judicial review of certain of the order on rehearing’s rate base disallowances (the acquisition premium and its associated amortization costs relating to certain plant facilities acquired by Oncor in 2019, as well as certain of the employee benefit and compensation-related costs that we had previously capitalized) and related expense effects of those disallowances. In February 2024, the court dismissed the appeal for lack of jurisdiction. In March 2024, we appealed that ruling to the Third Court of Appeals in Texas. 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. The following table presents components of our regulatory assets and liabilities and their remaining recovery periods in effect at June 30, 2024. Remaining Rate Recovery/Amortization Period in Effect At June 30, 2024 At June 30, 2024 At December 31, 2023 Regulatory assets: Employee retirement liability (a)(b)(c) To be determined $ 191 $ 189 Employee retirement costs being amortized 4 years 78 94 Employee retirement costs incurred since the last comprehensive base rate review periods (b) To be determined 71 70 Self-insurance reserve (primarily storm recovery costs) being amortized 4 years 395 454 Self-insurance reserve incurred since the last comprehensive base rate review periods (primarily storm related) (b) To be determined 673 438 Debt reacquisition costs Lives of related debt 8 10 Under-recovered advanced metering system costs being amortized 4 years 70 83 Energy efficiency program performance bonus (a) Approximately 1 year 10 21 Wholesale distribution substation service costs being amortized 4 years 58 65 Wholesale distribution substation service costs incurred since the last comprehensive base rate review periods (b) To be determined 28 28 Expenses related to COVID-19 (b) Various 29 32 Recoverable deferred income taxes Various 45 38 Uncollectible payments from REPs Various 9 7 Under-recovered wholesale transmission service expense (a) Approximately 1 year 25 - Other regulatory assets Various 31 27 Total regulatory assets 1,721 1,556 Regulatory liabilities: Estimated net removal costs Lives of related assets 1,559 1,519 Excess deferred taxes Primarily over lives of related assets 1,279 1,311 Over-recovered wholesale transmission service expense (a) Approximately 1 year - 64 Unamortized gain on reacquisition of debt Lives of related debt 24 25 Employee retirement costs over-recovered being refunded 4 years 21 23 Employee retirement costs over-recovered since the last comprehensive base rate review periods (b) To be determined 40 39 Other regulatory liabilities Various 28 19 Total regulatory liabilities 2,951 3,000 Net regulatory (liabilities) assets $ ( 1,230 ) $ ( 1,444 ) ____________ (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

Revenues	6 Months Ended
	Jun. 30, 2024
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 as prescribed by the related tariff. We recognize revenue for the amounts that have been invoiced or 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, EECRF, rate case expense riders and mobile generation riders) 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 collect regulatory assets or refund regulatory liabilities. 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. Disaggregation of Revenues The following table reflects electric delivery revenues disaggregated by tariff: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Operating revenues Revenues contributing to earnings: Distribution base revenues Residential (a) $ 358 $ 307 $ 687 $ 551 Large commercial & industrial (b) 312 274 617 545 Other (c) 30 33 60 69 Total distribution base revenues 700 614 1,364 1,165 Transmission base revenues (TCOS revenues) Billed to third-party wholesale customers 263 238 525 488 Billed to REPs serving Oncor distribution customers, through TCRF 144 133 287 274 Total TCOS revenues 407 371 812 762 Other miscellaneous revenues 22 25 46 42 Total revenues contributing to earnings 1,129 1,010 2,222 1,969 Revenues collected for pass-through expenses: TCRF – third-party wholesale transmission service 351 322 702 643 EECRF and other revenues 12 11 26 23 Total revenues collected for pass-through expenses 363 333 728 666 Total operating revenues $ 1,492 $ 1,343 $ 2,950 $ 2,635 __________ (a) Distribution base revenues from residential customers are generally based on actual monthly consumption (kWh). (b) Depending on size and annual load factor, distribution base revenues from large commercial & industrial customers are based either on actual monthly demand (kilowatts) or the greater of actual monthly demand (kilowatts) or 80 % of peak monthly demand during the prior eleven months. (c) Includes distribution base revenues from small business customers whose billing is generally based on actual monthly consumption (kWh), lighting sites and other miscellaneous distribution base revenues. Customers At June 30, 2024, our distribution business customers primarily consisted of over 100 REPs that sell electricity we distribute to end-use consumers in our certificated service area. The majority of consumers of the electricity we deliver through our distribution business are free to choose their electricity supplier from REPs who compete for their business. Our network transmission 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 22 % and 20 %, respectively, of our total operating revenues for the three months ended June 30, 2024 and 24 % and 22 %, respectively, of our total operating revenues for the six months ended June 30, 2024. No other customer represented more than 10% of our total operating revenues during such periods. 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.

Short-Term Borrowings

Short-Term Borrowings	6 Months Ended
	Jun. 30, 2024
Short-Term Borrowings [Abstract]
SHORT-TERM BORROWINGS	4. SHORT-TERM BORROWINGS The following table reflects our outstanding short-term borrowings and available unused credit under the $2B Credit Facility and CP Program at June 30, 2024 and December 31, 2023: At June 30, At December 31, 2024 2023 $2B Credit Facility borrowing capacity $ 2,000 $ 2,000 $2B Credit Facility outstanding borrowings - - Commercial paper outstanding (a) - ( 282 ) Total available unused credit $ 2,000 $ 1,718 ____________ (a) The weighted average interest rate for CP Notes was 5.54 % at December 31, 2023. All outstanding CP Notes at December 31, 2023 had maturity dates of less than one year . $2B Credit Facility The $2B Credit Facility has a borrowing capacity of $ 2.0 billion. We have the option to request an increase in our borrowing capacity of up to $ 400 million in $ 100 million minimum increments, subject to certain conditions, including lender approvals. Borrowings under the $2B Credit Facility, if any, are classified as short-term on the balance sheet. Borrowings under the $2B 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 the case of clauses (1) through (3), an applicable margin of between 0.00 % and 0.50 %, depending on certain credit ratings assigned to our debt. The $2B Credit Facility also provides for an alternative rate of interest upon the occurrence of certain events related to the current rate of interest 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 $2B Credit Facility. Letter of credit fees under the $2B 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 $2B 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 $2B Credit Facility includes sustainability-linked pricing metrics related to specific environmental and employee health and safety sustainability objectives. The $2B 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 facility. The maximum pricing adjustment in any given year is +/- 0.01 % on the commitment fee and +/- 0.05 % on the applicable margin. The $2B 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. The $2B 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 $2B 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 issuance) 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. The CP Program obtains liquidity support from the $2B Credit Facility discussed above. We may utilize either the CP Program or the $2B Credit Facility, at our option, to meet our funding needs.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2024
Long-Term Debt [Abstract]
LONG-TERM DEBT	5. LONG-TERM DEBT At June 30, 2024, our long-term debt consisted of U.S. dollar-denominated and euro-denominated fixed rate senior secured notes, variable rate secured debt borrowed under our AR Facility and variable rate unsecured debt borrowed under the $500M Credit Facility. At June 30, 2024 and December 31, 2023, our long-term debt consisted of the following: At June 30, At December 31, 2024 2023 Total U.S. Dollar-denominated Fixed Rate Senior Secured Notes $ 13,845 $ 13,445 Euro-denominated Fixed Rate Senior Secured Notes: 3.50 % Euro Notes due May 15, 2031 measured at issuance (a) 542 - Remeasurement adjustment at June 30, 2024 (b) ( 6 ) - Total Euro-denominated Fixed Rate Senior Secured Notes 536 - Total Fixed Rate Senior Secured Notes (c) 14,381 13,445 Variable Rate Secured Debt: AR Facility due April 28, 2027 (d) 140 - Variable Rate Unsecured Debt: $500M Credit Facility due February 21, 2027 (e) 500 - Total long-term debt 15,021 13,445 Unamortized discount, premium and debt issuance costs ( 159 ) ( 151 ) Long-term debt, noncurrent $ 14,862 $ 13,294 ___________ (a) On May 21, 2024, we issued the Euro Notes. Our euro-denominated fixed rate payment obligations under the Euro Notes were effectively converted to U.S. dollar-denominated fixed-rate payment obligations at issuance through concurrently-executed cross-currency swaps, which are expected to mitigate foreign currency exchange rate risk associated with the interest and principal payments on the Euro Notes that are due in euros. As a result of the cross-currency swaps, the U.S. dollar principal amount due on the Euro Notes at maturity will be $ 542 million and the all-in U.S. dollar fixed-rate coupon on the Euro Notes is 5.371 %. (b) The remeasurement was calculated based on the exchange rate of €1.00 to $ 1.0713 on June 30, 2024. (c) Our senior secured notes are secured equally and ratably by a first priority lien on certain transmission and distribution assets. See “Deed of Trust” below for additional information. (d) Amounts borrowed under our AR Facility are secured by accounts receivable from REPs and certain related rights under our AR Facility. See “AR Facility” below for additional information. (e) Amounts borrowed under the $500M Credit Facility are unsecured. See “$500M Credit Facility” below for additional information. At June 30, 2024 and December 31, 2023, our U.S. dollar-denominated fixed rate senior secured notes consisted of the following: At June 30, At December 31, 2024 2023 U.S. Dollar-denominated Fixed Rate Senior Secured Notes: 2.75 % Senior Notes due June 1, 2024 $ - $ 500 2.95 % Senior Notes due April 1, 2025 (a) 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 5.50 % Senior Notes, Series C, due May 1, 2026 200 200 4.30 % Senior Notes due May 15, 2028 600 600 3.70 % Senior Notes due November 15, 2028 650 650 5.75 % Senior Notes due March 15, 2029 318 318 5.00 % Senior Notes, Series F, due May 1, 2029 100 - 2.75 % Senior Notes due May 15, 2030 700 700 5.34 % Senior Notes, Series D, due May 1, 2031 100 100 7.00 % Senior Notes due May 1, 2032 494 494 4.15 % Senior Notes due June 1, 2032 400 400 4.55 % Senior Notes due September 15, 2032 700 700 7.25 % Senior Notes due January 15, 2033 323 323 5.65 % Senior Notes due November 15, 2033 800 800 5.45 % Senior Notes, Series E, due May 1, 2036 100 100 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 400 400 4.95 % Senior Notes due September 15, 2052 900 900 5.35 % Senior Notes due October 1, 2052 300 300 5.49 % Senior Notes, Series G, due May 1, 2054 50 - 5.55 % Senior Notes due June 15, 2054 750 - Total U.S. dollar-denominated Fixed Rate Senior Secured Notes $ 13,845 $ 13,445 ___________ (a) In accordance with ASC 470-10 “Debt”, our ability to refinance $ 350 million aggregate principal amount of our 2.95 % Senior Notes due April 1, 2025 on a long-term basis, through the available capacity of our AR Facility , and our intent to refinance such notes on a long-term basis, results in $ 350 million being classified as long-term debt, noncurrent as of June 30, 2024. Deed of Trust Our long-term senior secured notes are secured equally and ratably by a first priority lien on all property acquired or constructed by us for use in our 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. AR Facility In April 2023, we and our bankruptcy-remote special purpose entity Receivables LLC, a wholly-owned subsidiary of Oncor, established the AR Facility, a revolving accounts receivable securitization facility. Under the terms of the AR Facility, Oncor sells or contributes all of its existing and future accounts receivable from REPs and certain related rights to Receivables LLC as contemplated by the terms of the AR Facility. Receivables LLC then pledges those REP receivables and related rights to the lenders under the AR Facility as collateral for borrowings. Oncor serves as servicer of the AR Facility and receives a fee from Receivables LLC equal to 1.00 % per annum of the aggregate unpaid balance of receivables as of the last day of each settlement period. Receivables LLC’s sole business consists of the purchase or acceptance through capital contributions of the receivables and related rights from Oncor and the subsequent retransfer of or granting of a security interest in such receivables and related rights to the administrative agent for the benefit of the lenders pursuant to the receivables financing agreement. Receivables LLC is a separate legal entity with its own separate creditors who will be entitled, upon its liquidation, to have amounts owed to them be satisfied out of Receivables LLC’s assets prior to any assets or value in Receivables LLC becoming available to Receivables LLC’s equity holder. The assets of Receivables LLC are not available to pay creditors of Oncor or any affiliate thereof. Receivables LLC is considered a VIE. See Note 11 for more information related to our consolidated VIE. Oncor has access to the AR Facility, under which Receivables LLC may borrow at any one time an amount equal to the borrowing base. The borrowing base is defined under the receivables financing agreement as an amount equal to the lesser of (i) the facility limit of $ 500 million or (ii) the amount calculated based on the outstanding balance of eligible receivables held as collateral at a particular time, subject to certain reserves, concentration limits, and other limitations. Borrowings under the AR Facility bear interest at the daily cost of asset-backed commercial paper issued by the conduit lenders to fund the loans, plus related dealer commissions and note issuance costs, or, if funded by the committed lenders, a rate per annum equal to SOFR calculated based on term SOFR for a one-month interest period, plus the SOFR Adjustment. Receivables LLC also pays a used and unused fee in connection with the AR Facility. The agreements relating to the AR Facility contain customary representations and warranties and affirmative and negative covenants. The agreements relating to the AR Facility also contain customary events of default for a facility of this type, the occurrence of which provides for the acceleration of all outstanding loans made under the AR Facility, including Receivables LLC’s failure to pay interest or other amounts due, Receivables LLC becoming insolvent or subject to bankruptcy proceedings or certain judicial judgments or breaches of certain representations and warranties and covenants. On April 26, 2024, the scheduled termination date of the AR Facility was extended by one year from April 28, 2026 to April 28, 2027. The AR Facility will terminate at the earlier of (i) the scheduled termination date of April 28, 2027, (ii) the date on which the termination date is declared or deemed to have occurred upon the exercise of remedies by the administrative agent, or (iii) the date that is 30 days after notice of termination is provided by Receivables LLC. Subject to the consent of the administrative agent and the lenders, Receivables LLC may, 30 days prior to each anniversary date of the receivables financing agreement, extend the AR Facility in one-year increments subject to lender approvals. $500M Credit Facility On February 21, 2024, we entered into an unsecured revolving $500M Credit Facility. The $500M Credit Facility has a borrowing capacity of $ 500 million and a maturity date of February 21, 2027. The $500M Credit Facility gives us the option to request an increase in our borrowing capacity of up to $ 500 million in $ 100 million minimum increments, subject to certain conditions, including lender approvals. The $500M Credit Facility also provides us with the option to request that each lender extend the term of its commitment for up to two additional one-year periods, subject to certain conditions, including lender approvals. Borrowings under the $500M 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 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 publicly announced from time to time by the administrative agent as its prime rate, (2) the federal funds effective 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 the case of clauses (1) through (3), an applicable margin of between 0.00 % and 0.50 %, depending on certain credit ratings assigned to our debt. The $500M Credit Facility also provides for an alternative rate of interest upon the occurrence of certain events related to the current rate of interest 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 0.625 % of the commitments under the $500M Credit Facility, depending on certain credit ratings assigned to us and the utilization percentage. The utilization percentage is determined by dividing the aggregate principal amount of loans outstanding under the $500M Credit Facility by the total commitments. At June 30, 2024, $ 500 million aggregate principal amount of borrowings were outstanding under the $500M Credit Facility. Long-Term Debt-Related Activity in the Six Months ended June 30, 2024 Senior Secured Notes Issuance of 2024 NPA Notes On April 24, 2024, we issued $ 100 million aggregate principal amount of 5.00 % Senior Secured Notes, Series F, due May 1, 2029 (Series F Notes) and $ 50 million aggregate principal amount of 5.49 % Senior Secured Notes, Series G, due May 1, 2054 (Series G Notes, and together with the Series F Notes, the 2024 NPA Notes). The 2024 NPA Notes were issued pursuant to the Note Purchase Agreement, dated March 27, 2024, between Oncor and the purchasers named therein (2024 NPA). We used the proceeds from the sale of the 2024 NPA Notes for general corporate purposes, including to repay outstanding CP Notes. The Series F Notes bear interest at a rate of 5.00 % per annum and mature on May 1, 2029. The Series G Notes bear interest at a rate of 5.49 % per annum and mature on May 1, 2054. Interest on the 2024 NPA Notes will be payable semi-annually on May 1 and November 1, beginning November 1, 2024. Prior to April 1, 2029 in the case of the Series F Notes and November 1, 2053 in the case of the Series G 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 April 1, 2029 in the case of the Series F Notes and November 1, 2053 in the case of the Series G 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. The 2024 NPA contains customary covenants, restricting, subject to certain exceptions, us from, among other things, entering into mergers and consolidations, and sales of substantial assets. In addition, the 2024 NPA requires that we maintain a consolidated senior debt to consolidated total capitalization ratio of no greater than 0.65 to 1.00 and observe certain customary reporting requirements and other affirmative covenants. The 2024 NPA also contains customary events of default, including the failure to pay principal or interest on the 2024 NPA Notes when due, among others. If any such event of default occurs and is continuing, among other remedies provided in the 2024 NPA, the outstanding principal of the 2024 NPA Notes may be declared due and payable. Issuance of Euro Notes Under Indenture On May 21, 2024, we issued € 500 million aggregate principal amount of Euro Notes. The Euro Notes were issued under one of our existing indentures and are secured pursuant to the Deed of Trust. Our euro-denominated fixed-rate payment obligations under the Euro Notes were effectively converted to U.S. dollar-denominated fixed-rate payment obligations at issuance through concurrently-executed cross-currency swaps, which are expected to mitigate foreign currency exchange risk associated with the interest and principal payments on the Euro Notes that are due in euros. As a result of the cross-currency swaps, the U.S. dollar principal amount due on the Euro Notes at maturity will be $ 542 million and the all-in U.S. dollar fixed-rate coupon on the Euro Notes is 5.371 %. See Note 10 for more information on our cross-currency swaps activities. We intend to allocate/disburse the net proceeds from the sale of the Euro Notes, or an amount equal to the net proceeds from the sale of the Euro 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 will include new and/or existing projects which fall into one or more of the eligible categories of renewable energy, energy efficiency and climate change adaptation, and also meet the eligibility criteria set forth in the applicable offering documents. Prior to the allocation/disbursement of the full amount of the net proceeds from the sale of the Euro Notes to eligible green projects, we temporarily applied such net proceeds to repay $ 400 million aggregate principal amount outstanding under our AR Facility, which amount reflected the entire amount then-outstanding, and to repay outstanding CP Notes. The Euro Notes bear interest at a rate of 3.50 % per annum and mature on May 15, 2031. Interest on the Euro Notes will accrue from the date of the original issuance and will be payable annually on May 15 of each year, beginning on May 15, 2025. Prior to February 15, 2031, we may redeem the Euro 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 February 15, 2031, we may redeem the Euro Notes at any time, in whole or in part, at a redemption price equal to 100 % of the principal amount of the Euro Notes, plus accrued and unpaid interest. We may also redeem the Euro Notes for cash in whole, but not in part, at the redemption price equal to 100 % of the principal amount of the Euro Notes, plus accrued and unpaid interest, if certain tax events occur that would obligate us to pay certain additional amounts. Issuance of Senior Secured Notes Under Indenture (2054 Notes) On June 21, 2024, we issued $ 750 million aggregate principal amount of 5.55 % Senior Secured Notes due June 15, 2054 (2054 Notes) . The 2054 Notes were issued under one of our existing indentures and are secured pursuant to the Deed of Trust. We used the net proceeds from the sale of the 2054 Notes for general corporate purposes, including to repay outstanding CP Notes. The 2054 Notes bear interest at a rate of 5.55 % per annum and mature on June 15, 2054. Interest on the 2054 Notes accrued from June 21, 2024 and will be payable semi-annually on June 15 and December 15 of each year, beginning on December 15, 2024. Prior to December 15, 2053, we may redeem the 2054 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 December 15, 2053, we may redeem the 2054 Notes at any time, in whole or in part, at a redemption price equal to 100 % of the principal amount of the 2054 Notes, plus accrued and unpaid interest. Senior Secured Notes Repayment We repaid in full at maturity the $ 500 million aggregate principal amount of our 2.75 % Senior Secured Notes due June 1, 2024 , plus accrued and unpaid interest on such notes. AR Facility On May 21, 2024, we repaid the $ 400 million aggregate principal amount then outstanding under the AR Facility. We borrowed $ 100 million and $ 140 million aggregate principal amount under the AR Facility on April 29, 2024 and June 27, 2024, respectively. The proceeds of the borrowings were used for general corporate purposes, including to repay outstanding CP Notes. At June 30, 2024, the borrowing base for the AR Facility was $ 500 million and the aggregate borrowings outstanding under the AR Facility totaled $ 140 million. Fair Value of Long-Term Debt At June 30, 2024 and December 31, 2023, the estimated fair value of our long-term debt (including current maturities) totaled $ 13.796 billion and $ 12.798 billion, respectively, and the carrying amount totaled $ 14.862 billion and $ 13.294 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	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies [Abstract]
COMMITMENTS AND CONTINGENCIES	6. COMMITMENTS AND CONTINGENCIES Legal/Regulatory Proceedings See Note 2 for information regarding certain regulatory 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. See Notes 1 and 2 above and Note 7 to Consolidated Financial Statements in our 2023 Form 10-K for additional information regarding our legal and regulatory proceedings. Leases 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 June 30, 2024, we had $ 4 million in GAAP operating leases for temporary emergency electric energy facilities that are treated as capital leas es (referred to as finance leases under current accounting literature) solely for rate-making purposes as required by PURA. 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. See Note 7 to Consolidated Financial Statements in our 2023 Form 10-K for additional information on leases. As of June 30, 2024, there was a 15 -year operating lease contract we entered into in December 2023 that is scheduled to commence in the second half of 2024. The estimated $ 64 million present value of the lease obligation is not yet recorded on the Condensed Consolidated Balance Sheets. Sales and Use Tax Audits We are subject to sales and use tax audits in the normal course of business. As of June 30, 2024, the Texas State Comptroller’s office was conducting two sales and use tax audits for audit periods covering July 2013 through December 2017 and January 2018 through December 2022. While the outcome of these ongoing audits is uncertain, based on our analysis, we do not expect the ultimate resolution of these ongoing audits will have a material adverse effect on our financial position, results of operations, or cash flows. In January 2024, we reached a final settlement agreement with the Texas State Comptroller’s office for the sales and use tax audit for the January 2010 through June 2013 audit period that resulted in a $ 63 million refund, net of consulting fees. The effects of the net settlement recorded in the first quarter of 2024 reflect a $ 53 million reduction in property, plant and equipment in the Condensed Consolidated Balance Sheets related to sales tax previously capitalized and a $ 10 million decrease in operation and maintenance expense in the Condensed Statements of Consolidated Income related to sales tax previously expensed.

Membership Interests

Membership Interests	6 Months Ended
	Jun. 30, 2024
Membership Interests [Abstract]
MEMBERSHIP INTERESTS	7. MEMBERSHIP INTERESTS Contributions We received cash contributions from our members of $ 240 million on July 31, 2024. In the six months ended June 30, 2024, we received the following cash contributions from our members: Receipt Dates Amounts February 16, 2024 $ 240 May 3, 2024 $ 240 Distributions The Sempra Order and our LLC 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 our debt-to-equity ratio authorized by the PUCT. 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). In addition, the distribution restrictions also require us to suspend dividends and other distributions (except for contractual tax payments) if the credit rating on our senior secured debt by any of the three major rating agencies falls below BBB (or the equivalent), unless otherwise allowed by the PUCT. Our current authorized regulatory capital structure is 57.5 % debt to 42.5 % equity. The PUCT has the authority to determine what types of debt and equity are included in a utility’s regulatory 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. At June 30, 2024, our regulatory capitalization was 56.9 % debt to 43.1 % equity and as a result we had $ 259 million available to distribute to our members. On July 30, 2024, our board of directors declared a cash distribution of $ 125 million, which was paid to our members on July 30, 2024. In the six months ended June 30, 2024, our board of directors declared, and we paid, the following cash distributions to our members: Declaration Dates Payment Dates Amounts February 14, 2024 February 15, 2024 $ 125 April 30, 2024 May 1, 2024 $ 126 Membership Interests The following tables present the changes to membership interests during the three and six months ended June 30, 2024 and 2023, net of tax: Capital Account AOCI Total Membership Interests Balance at March 31, 2024 $ 14,728 $ ( 179 ) $ 14,549 Net income 251 - 251 Capital contributions 240 - 240 Distributions ( 126 ) - ( 126 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 1 1 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) - ( 13 ) ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) - ( 9 ) ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ 15,093 $ ( 199 ) $ 14,894 Balance at March 31, 2023 $ 13,727 $ ( 181 ) $ 13,546 Net income 200 - 200 Capital contributions 115 - 115 Distributions ( 149 ) - ( 149 ) Balance at June 30, 2023 $ 13,893 $ ( 181 ) $ 13,712 Capital Account AOCI Total Membership Interests Balance at December 31, 2023 $ 14,388 $ ( 180 ) $ 14,208 Net income 476 - 476 Contributions from members 480 - 480 Distributions to members ( 251 ) - ( 251 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 2 2 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) - ( 13 ) ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) - ( 9 ) ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ 15,093 $ ( 199 ) $ 14,894 Balance at December 31, 2022 $ 13,624 $ ( 162 ) $ 13,462 Net income 303 - 303 Contributions from members 221 - 221 Distributions to members ( 255 ) - ( 255 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 1 1 Defined benefit pension plans (a) - ( 20 ) ( 20 ) Balance at June 30, 2023 $ 13,893 $ ( 181 ) $ 13,712 ____________ (a) Includes a $ 20 million reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income in the first quarter of 2023, recorded as a result of the final order in our comprehensive base rate review (PUCT Docket No. 53601). AOCI The following table presents the changes to AOCI for the six months ended June 30, 2024 and 2023, net of tax: Derivative Hedges Defined Benefit Pension and OPEB Plans Total AOCI Balance at December 31, 2023 $ ( 34 ) $ ( 146 ) $ ( 180 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) 2 - 2 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) ( 13 ) - ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) ( 9 ) - ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ ( 54 ) $ ( 145 ) $ ( 199 ) Balance at December 31, 2022 $ ( 34 ) $ ( 128 ) $ ( 162 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) 1 - 1 Defined benefit pension plans (a) - ( 20 ) ( 20 ) Balance at June 30, 2023 $ ( 33 ) $ ( 148 ) $ ( 181 ) ____________ (a) Includes a $ 20 million reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income in the first quarter of 2023, recorded as a result of the final order in our comprehensive base rate review (PUCT Docket No. 53601).

Pension and OPEB Plans

Pension and OPEB Plans	6 Months Ended
	Jun. 30, 2024
Pension and OPEB Plans [Abstract]
PENSION AND OPEB PLANS	8. PENSION AND OPEB PLANS 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 Internal Revenue Code of 1986, as amended, and are subject to the provisions of ERISA. Employees do not contribute to either plan. We also maintain a supplemental retirement plan for certain employees whose retirement benefits cannot be fully earned under the qualified retirement plans. See Note 9 to Consolidated Financial Statements in our 2023 Form 10-K for additional information regarding pension plans. OPEB Plans We currently sponsor two OPEB plans. One plan covers eligible current and future retirees whose services are 100 % assigned to Oncor (or a predecessor regulated utility business). Effective January 1, 2018, we established a second plan to cover eligible retirees of Oncor and Vistra (or their predecessors or affiliates) whose employment services were assigned to both Oncor (or a predecessor regulated utility business) and the non-regulated business of Vistra. Vistra is solely responsible for its portion of the liability for retiree benefits related to those retirees. See Note 9 to Consolidated Financial Statements in our 2023 Form 10-K for additional information. Pension and OPEB Costs Our net costs related to pension plans and the OPEB Plans for the three and six months ended June 30, 2024 and 2023, were comprised of the following: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Components of net pension costs: Service cost $ 7 $ 6 $ 13 $ 12 Interest cost (a) 30 30 60 61 Expected return on assets (a) ( 29 ) ( 32 ) ( 58 ) ( 64 ) Amortization of net loss (a) 1 - 2 1 Net pension costs 9 4 17 10 Net adjustments (b) ( 3 ) 2 ( 5 ) 6 Net pension costs recognized as operation and maintenance expense or other deductions $ 6 $ 6 $ 12 $ 16 Components of net OPEB costs: Service cost $ 1 $ 1 $ 2 $ 2 Interest cost (a) 8 8 16 16 Expected return on assets (a) ( 2 ) ( 2 ) ( 4 ) ( 4 ) Amortization of net loss (a) ( 2 ) ( 8 ) ( 4 ) ( 16 ) Net OPEB costs 5 ( 1 ) 10 ( 2 ) Net adjustments (b) ( 3 ) 5 ( 6 ) 14 Net OPEB costs recognized as operation and maintenance expense or other deductions $ 2 $ 4 $ 4 $ 12 ___________ (a) The components of net costs other than the service cost component, are recorded in “Other (income) and deductions – net” in Condensed Statements of Consolidated Income. (b) Net adjustments include amounts principally deferred as property, plant and equipment, regulatory assets or regulatory liabilities. The discount rates reflected in net pension and OPEB costs in 2024 are 4.76 %, 4.97 % and 4.99 % for the Oncor Retirement Plan, the Vistra Retirement Plan and the OPEB Plans, respectively. The expected return on pension and OPEB plan assets reflected in the 2024 cost amounts are 5.78 %, 6.29 % and 6.72 % for the Oncor Retirement Plan, the Vistra Retirement Plan and the OPEB Plans, respectively. Pension Plans and OPEB Plans Cash Contributions We made cash contributions to the pension plans and OPEB Plans of $ 23 million and $ 12 million, respectively, during the six months ended June 30, 2024. Based on funding considerations in the latest actuarial projections, including applicable minimum funding requirements, our future fundings for the pension plans and the OPEB Plans are expected to total $ 68 million and $ 11 million, respectively, during the remainder of 2024 and approximately $ 532 million and $ 125 million, respectively, in the five-year period from 2024 to 2028. Future funding estimates for our pension plans and OPEB Plans are dependent on a variety of variables and assumptions, including investment returns on plan assets, market interest rates, and levels of discretionary contributions over minimum funding requirements, which we continue to monitor. Financial market volatility and its effects on the returns on our plan assets and liability valuations could significantly change our anticipated future funding amounts .

Related-Party Transactions

Related-Party Transactions	6 Months Ended
	Jun. 30, 2024
Related-Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS	9. RELATED-PARTY TRANSACTIONS The following represents 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 to Consolidated Financial Statements in our 2023 Form 10-K 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 tax sharing agreement and reported on our balance sheet consisted of the following: At June 30, 2024 At December 31, 2023 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes (receivable) payable $ ( 19 ) $ ( 4 ) $ ( 23 ) $ ( 3 ) $ ( 1 ) $ ( 4 ) Texas margin tax payable 15 - 15 27 - 27 Net (receivable) payable $ ( 4 ) $ ( 4 ) $ ( 8 ) $ 24 $ ( 1 ) $ 23 Cash payments made to members related to income taxes in the six months ended June 30, 2024 and 2023 consisted of the following: Six Months Ended June 30, 2024 Six Months Ended June 30, 2023 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes $ 36 $ 9 $ 45 $ 35 $ 8 $ 43 Texas margin tax 26 - 26 25 - 25 Total payments $ 62 $ 9 $ 71 $ 60 $ 8 $ 68 See Note 7 for information regarding cash contributions from and distributions to members.  Sempra owns an indirect 50 percent interest in the parent of Sharyland. Sharyland provided wholesale transmission service to us in the amount of $ 4 million during each of the three months ended June 30, 2024 and 2023, and $ 8 million during each of the six months ended June 30, 2024 and 2023, at rates set pursuant to PUCT-approved tariffs. Pursuant to an operation agreement between us and Sharyland that was entered into in connection with a PUCT order, we provide Sharyland with substation monitoring and switching services. These services totaled less than $ 1 million in each of the six months ended June 30, 2024 and 202 3.

Derivatives and Hedging

Derivatives and Hedging	6 Months Ended
	Jun. 30, 2024
Derivatives and Hedging [Abstract]
DERIVATIVES AND HEDGING	10. DERIVATIVES AND HEDGING We are exposed to changes in interest rates and foreign currency exchange rates primarily as a result of our current and expected use of financing, including the Euro Notes. Interest Rate Derivatives 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 AOCI and are reclassified into net income as the interest expense on the related debt affects net income. The 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. Interest Rate Hedge Transactions In the second quarter of 2024, we entered into interest rate hedge transactions hedging the variability of benchmark bond rates used to determine the interest rates on the anticipated issuance of 30-year senior secured notes. The hedges were terminated in June 2024 upon the issuance of our 2054 Notes and a $ 17 million ($ 13 million net of tax) loss was reported in other comprehensive (loss) income. The accumulated other comprehensive loss will be reclassified into net income as an increase in interest expense over the life of the 2054 Notes. There was approximately $ 5 million of the amounts reported in accumulated other comprehensive loss at June 30, 2024 related to the interest rate hedges entered into in the second quarter of 2024, as well as interest rate hedges entered into in prior years to be reclassified into net income as an increase to interest expense within the next 12 months. There were no interest rate derivatives outstanding at June 30, 2024. Foreign Currency Derivatives We are exposed to foreign currency exchange rate risk as a result of the use of foreign currency denominated financing instruments, including the Euro Notes. We have and may continue to utilize cross-currency swaps to help mitigate the exposure related to the Euro Notes and any other foreign currency denominated debt. Our existing cross-currency swaps exchange our euro-denominated principal payments due at maturity under the Euro Notes into a U.S. dollar-denominated notional amount and swap euro-denominated fixed interest rates for U.S. dollar-denominated fixed interest rates. We currently designate our cross-currency swaps as fair value hedges. In accounting for fair value hedges, the derivative contract is recorded on the balance sheet at fair value. We have elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of our foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of other comprehensive income or loss. The fair value (loss) gain of cross-currency swaps attributable to foreign currency exchange rates are recognized in the income statement to offset the remeasurement gain (loss) on the foreign currency denominated debt attributable to foreign currency exchange rates. Foreign Currency Exchange Rate Hedge Transactions In May 2024, we entered into designated cross-currency swaps that effectively converted our euro-denominated fixed-rate payment obligations under our Euro Notes with respect to principal and interest payments to U.S. dollar-denominated fixed-rate payment obligations. In the second quarter of 2024, we recorded a $ 17 million fair value loss of the cross-currency swaps. The fair value loss on cross-currency swaps attributable to changes in the foreign currency exchange rate was recorded in the income statement offsetting the gain due to remeasurement of Euro Notes, resulting in no impact on earnings attributable to change in foreign currency exchange rate. The amount attributable to excluded components was $ 11 million ($ 9 million net of tax) and was reported in other comprehensive income. At June 30, 2024, the following foreign currency derivatives designated as fair value hedges of the Euro Notes were outstanding: Fair Value Gain (Loss) Notional Amount Pay Rate Receive Amount Receive Rate Maturity Three Months Ended June 30, 2024 Six Months Ended June 30, 2024 Cross-currency swaps (a) $ 542 5.371 % € 500 million 3.50 % 2031 $ ( 17 ) $ ( 17 ) ___________ (a) Notional amount reflects the aggregate amount we received in U.S. dollars upon execution of the cross-currency swaps in exchange for transferring the receive amount to the counterparties of the cross-currency swaps. As a result of the cross-currency swaps relating to the Euro Notes, our all-in U.S. dollar fixed-rate coupon on the U.S. dollar notional amount is 5.371 %. Derivative Fair Values and Income Statement Impacts The table below provides a balance sheet overview of our outstanding derivative assets and liabilities as of June 30, 2024: At June 30, 2024 Balance Sheet Location Fair Value of Derivative Liabilities Cross-currency swaps Operating lease and other obligations $ 17 The table below provides the related income statement impacts of derivative activity for the three and six months ended June 30, 2024: Three Months Ended June 30, Six Months Ended June 30, Income Statement Location 2024 2024 Cross-currency swaps Loss on foreign currency derivatives (a) $ 6 $ 6 ____________ (a) The fair value loss on cross-currency swaps attributable to changes in the foreign currency exchange rate was recorded in the income statement offsetting the gain due to remeasurement of Euro Notes, resulting in no impact on earnings attributable to change in foreign currency exchange rate . The fair value loss on cross-currency swaps attributable to excluded components was recognized as a component of other comprehensive income or loss. Fair Value Measurements The fair value of our foreign currency related derivative instruments is measured using inputs that are considered a Level 2 measurement, as they are not actively traded and are valued using pricing models that use observable market quotations.

Supplementary Financial Informa

Supplementary Financial Information	6 Months Ended
	Jun. 30, 2024
Supplementary Financial Information [Abstract]
SUPPLEMENTARY FINANCIAL INFORMATION	11. SUPPLEMENTARY FINANCIAL INFORMATION Other (Income) and Deductions – Net Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Professional fees $ 1 $ 3 $ 2 $ 5 Recoverable Pension and OPEB – non-service costs 5 8 9 23 Non-recoverable pension and OPEB - ( 1 ) - ( 1 ) AFUDC – equity income ( 14 ) ( 12 ) ( 27 ) ( 23 ) Interest and investment income – net ( 8 ) ( 3 ) ( 16 ) ( 4 ) Other - - 2 2 Total other (income) and deductions – net $ ( 16 ) $ ( 5 ) $ ( 30 ) $ 2 Interest Expense and Related Charges Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Interest $ 168 $ 137 $ 324 $ 263 Amortization of discount, premium and debt issuance costs 3 3 6 6 Less AFUDC – capitalized interest portion ( 10 ) ( 7 ) ( 19 ) ( 13 ) Total interest expense and related charges $ 161 $ 133 $ 311 $ 256 Accounts Receivable – Net Accounts receivable reported on our balance sheet consisted of the following: At June 30, At December 31, 2024 2023 Accounts receivable $ 1,166 $ 958 Allowance for uncollectible accounts ( 16 ) ( 14 ) Accounts receivable – net $ 1,150 $ 944 The accounts receivable balance from REP subsidiaries of our two largest customers, collectively represented 20 % and 18 %, respectively, of our accounts receivable balance at June 30, 2024 and 22 % and 20 %, respectively, of our accounts receivable balance at December 31, 2023. No other customer represented 10% or more of the total accounts receivable at such dates. 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. Prepayments and Other Current Assets Prepayments and other current assets reported on our balance sheet consisted of the following: At June 30, At December 31, 2024 2023 Insurance prepayments $ 57 $ 9 Local franchise tax prepayments 108 78 Other 18 14 Prepayments and other current assets $ 183 $ 101 Investments and Other Property Investments and other property reported on our balance sheet consisted of the following: At June 30, At December 31, 2024 2023 Assets related to employee benefit plans $ 151 $ 137 Non-utility property – land 19 19 Other 1 2 Total investments and other property $ 171 $ 158 Consolidated VIE Receivables LLC is considered a VIE under ASC 810. We are the primary beneficiary of this VIE because we have the power to direct AR Facility related activities of the VIE, the obligation to absorb losses and the right to receive benefits that could be significant to the VIE. See Note 5 for more information on the AR Facility. As a result, we consolidate Receivables LLC. Receivable LLC’s assets and liabilities on the balance sheets consisted of the following: At June 30, At December 31, 2024 2023 Assets Cash and cash equivalents $ 4 $ - REP Accounts receivable – net 716 638 Income tax receivable 6 4 Unamortized AR Facility costs ( 2 ) 2 Total assets $ 724 $ 644 Liabilities Long-term debt $ 140 $ - Total liabilities $ 140 $ - Property, Plant and Equipment Property, plant and equipment – net reported on our balance sheet consisted of the following: Composite Depreciation Rate/Average Life of Depreciable Plant At June 30, 2024 At June 30, 2024 At December 31, 2023 Assets in service: Distribution 2.7 % / 36.4 years $ 19,792 $ 18,865 Transmission 2.4 % / 42.0 years 15,640 15,001 Other assets 7.9 % / 12.7 years 2,074 2,097 Total 37,506 35,963 Less accumulated depreciation 9,511 9,301 Net of accumulated depreciation 27,995 26,662 Construction work in progress 1,649 1,339 Held for future use 83 56 Property, plant and equipment – net $ 29,727 $ 28,057 Intangible Assets Intangible assets (other than goodwill) reported on our balance sheet as part of property, plant and equipment consisted of the following: At June 30, 2024 At December 31, 2023 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Identifiable intangible assets subject to amortization: Land easements $ 682 $ 131 $ 551 $ 679 $ 127 $ 552 Capitalized software and other 1,212 421 791 1,238 416 822 Total $ 1,894 $ 552 $ 1,342 $ 1,917 $ 543 $ 1,374 Aggregate amortization expense for intangible assets totaled $ 28 million and $ 24 million for the three months ended June 30, 2024 and 2023, respectively, and $ 57 million and $ 46 million for the six months ended June 30, 2024 and 2023, respectively. The estimated annual amortization expense for the five-year period from 2024 to 2028, based on rates in effect at June 30, 2024, is as follows: Year Amortization Expense 2024 $ 113 2025 $ 113 2026 $ 113 2027 $ 113 2028 $ 113 Operating Lease and Other Obligations Operating lease and other obligations reported on our balance sheet consisted of the following: At June 30, At December 31, 2024 2023 Operating lease liabilities (a) $ 116 $ 112 Investment tax credits 2 3 Customer advances for construction – noncurrent 125 105 Litigation claim obligations 84 6 Fair value of derivative liabilities 17 - Other 78 79 Total operating lease and other obligations $ 422 $ 305 ____________ (a) Excludes the effects of a 15 -year operating lease contract entered into in December 2023 that is scheduled to commence in the second half of 2024. The estimated $ 64 million present value of the lease obligation is not yet recorded on the Condensed Consolidated Balance Sheets. Supplemental Cash Flow Information Six Months Ended June 30, 2024 2023 Cash payments related to: Interest $ 306 $ 245 Less capitalized interest ( 19 ) ( 13 ) Total interest payments (net of amounts capitalized) $ 287 $ 232 Amount in lieu of income taxes (Note 9): Federal $ 45 $ 43 State 26 25 Total payments in lieu of income taxes $ 71 $ 68 Noncash investing activities: Construction expenditures financed through accounts payable (a) $ 344 $ 244 ______________ (a) Represents end-of-period accruals .

Business and Significant Acco_2

Business and Significant Accounting Policies (Policy)	6 Months Ended
	Jun. 30, 2024
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 is only one reportable segment.
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 Sempra and its affiliates and any other direct or indirect 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 Sempra entity or any other 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 in the Sempra Acquisition. That transaction was approved by the PUCT in the Sempra Order, which order outlines certain ring-fencing measures, governance mechanisms and restrictions that apply to Oncor Holdings and Oncor 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. Our LLC Agreement requires PUCT approval of certain revisions to the agreement, including, among other things, revisions to our governance structure and other various ring-fencing measures. 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 LLC 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). 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 LLC 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 operation 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 such 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; and  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.
Basis of Presentation	Basis of Presentation These unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and related notes included in our 2023 Form 10-K. In the opinion of Oncor management, all adjustments (consisting of normal recurring accruals) necessary for a fair presentation of the results of operations and financial position have been made. We have evaluated all subsequent events through the date the financial statements were issued. All appropriate intercompany items and transactions have been eliminated in consolidation. The results of operations for an interim period may not give a true indication of results for a full year due to seasonality and other factors. Our condensed consolidated financial statements have been prepared in accordance with GAAP governing rate-regulated operations. Our condensed consolidated financial statements include the accounts of Oncor and its consolidated VIEs. 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 during the period. These estimates include, but are not limited to, the effects of regulation; recovery of long-lived assets; certain assumptions made in accounting for pension and OPEB; asset retirement obligations; income and other taxes; valuation of certain financial assets and liabilities; and accounting for contingencies. 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.
Accounting for the Effects of Certain Types of Regulation	Accounting for the Effects of Certain Types of Regulation 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.
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 as prescribed by the related tariff. See Note 3 for additional information regarding revenues.
Derivatives and Hedging	Derivatives and Hedging We are exposed to changes in interest rates and foreign currency exchange rates primarily as a result of our current and expected use of financing, including the Euro Notes. We have and may, from time to time, continue to utilize derivative instruments typically designated as cash flow or fair value hedges to help mitigate our exposure related to those risks. All derivative instruments are recorded on the balance sheet at fair value as a derivative asset or liability and changes in the fair value are recognized in net income if the criteria for hedge accounting are not met or if the instrument is not designated as a hedge. See Note 10 for more information regarding our derivative instruments.
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.
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 Condensed Consolidated Balance Sheets to the sum of such amounts reported on the Condensed Statements of Consolidated Cash Flows: At June 30, At December 31, 2024 2023 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 20 $ 19 Restricted cash, current (a) 32 24 Restricted cash, noncurrent (a) 131 108 Total cash, cash equivalents and restricted cash on the Condensed Statements of Consolidated Cash Flows $ 183 $ 151 ____________ (a) Restricted cash represents amounts held by Oncor for customer deposits that are subject to probable 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 separate escrow accounts.
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 6 for a discussion of contingencies.
VIE	VIE We consolidate a VIE if we are the primary beneficiary of the VIE. Our determination of whether we are the primary beneficiary is based on qualitative and quantitative analyses, which assess:  the purpose and design of the VIE;  the nature of the VIE’s risks and the risks we absorb;  the power to direct activities that most significantly impact the economic performance of the VIE; and  the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. We will continue to evaluate our business operations and VIEs for any changes that may impact our determination of whether an entity is a VIE and if we are the primary beneficiary.
Accounting Standards Updates (ASU)	Accounting Standards Updates (ASU) ASU 2023-07 Segment reporting ( ASC 280 ) In November 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-07, which expands reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU requires that a public entity disclose, on an annual and interim basis, significant segment expenses that are regularly provided to an entity's chief operating decision maker (CODM), a description of other segment items by reportable segment, and any additional measures of a segment's profit or loss used by the CODM when deciding how to allocate resources. A public entity that has a single reportable segment is also required to provide all the disclosures required by this ASU and all existing segment disclosures in ASC 280. Annual disclosures are required for fiscal years beginning after December 15, 2023. Interim disclosures are required for periods within fiscal years beginning after December 15, 2024. Retrospective application is required for all prior periods presented, and early adoption is permitted. We plan to adopt the standard on December 31, 2024 and as a result expect to provide enhanced disclosures about segment information. ASU 2023-09 Improvements to Income Tax Disclosures ( ASC 740) In December 2023, the FASB issued ASU 2023-09, which expands income tax disclosure requirements to include additional information related to the rate reconciliation of our effective tax rates to statutory rates, as well as additional disaggregation of taxes paid. This ASU also removed disclosures related to certain unrecognized tax benefits and deferred taxes. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. This ASU may be applied prospectively or retrospectively, and early adoption is permitted. We plan to adopt the standard on December 31, 2025 and are currently evaluating the effect of the standard on our financial reporting. All other newly issued accounting pronouncements not yet effective have been deemed either immaterial or not applicable.

Business and Significant Acco_3

Business and Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2024
Business and Significant Accounting Policies [Abstract]
Schedule of Cash, Cash Equivalents and Restricted Cash	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the Condensed Consolidated Balance Sheets to the sum of such amounts reported on the Condensed Statements of Consolidated Cash Flows: At June 30, At December 31, 2024 2023 Cash, cash equivalents and restricted cash Cash and cash equivalents $ 20 $ 19 Restricted cash, current (a) 32 24 Restricted cash, noncurrent (a) 131 108 Total cash, cash equivalents and restricted cash on the Condensed Statements of Consolidated Cash Flows $ 183 $ 151 ____________ (a) Restricted cash represents amounts held by Oncor for customer deposits that are subject to probable 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 separate escrow accounts.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2024
Regulatory Matters [Abstract]
Schedule of Interim Rate Update Applications	Filing Type PUCT Docket No. Investment Through Filed Effective Date Annual Revenue Impact (a) DCRF 56306 December 2023 (b) March 2024 July 2024 $ 81 ____________ (a) Annual revenue impact represents the incremental annual revenue impact, after taking into account revenue effects of prior applicable rate adjustments. (b) Reflects distribution and functionalized distribution-related capital investments generally put into service during the period from July 1, 2023 through December 31, 2023.
Components of Regulatory Assets and Liabilities	Remaining Rate Recovery/Amortization Period in Effect At June 30, 2024 At June 30, 2024 At December 31, 2023 Regulatory assets: Employee retirement liability (a)(b)(c) To be determined $ 191 $ 189 Employee retirement costs being amortized 4 years 78 94 Employee retirement costs incurred since the last comprehensive base rate review periods (b) To be determined 71 70 Self-insurance reserve (primarily storm recovery costs) being amortized 4 years 395 454 Self-insurance reserve incurred since the last comprehensive base rate review periods (primarily storm related) (b) To be determined 673 438 Debt reacquisition costs Lives of related debt 8 10 Under-recovered advanced metering system costs being amortized 4 years 70 83 Energy efficiency program performance bonus (a) Approximately 1 year 10 21 Wholesale distribution substation service costs being amortized 4 years 58 65 Wholesale distribution substation service costs incurred since the last comprehensive base rate review periods (b) To be determined 28 28 Expenses related to COVID-19 (b) Various 29 32 Recoverable deferred income taxes Various 45 38 Uncollectible payments from REPs Various 9 7 Under-recovered wholesale transmission service expense (a) Approximately 1 year 25 - Other regulatory assets Various 31 27 Total regulatory assets 1,721 1,556 Regulatory liabilities: Estimated net removal costs Lives of related assets 1,559 1,519 Excess deferred taxes Primarily over lives of related assets 1,279 1,311 Over-recovered wholesale transmission service expense (a) Approximately 1 year - 64 Unamortized gain on reacquisition of debt Lives of related debt 24 25 Employee retirement costs over-recovered being refunded 4 years 21 23 Employee retirement costs over-recovered since the last comprehensive base rate review periods (b) To be determined 40 39 Other regulatory liabilities Various 28 19 Total regulatory liabilities 2,951 3,000 Net regulatory (liabilities) assets $ ( 1,230 ) $ ( 1,444 ) ____________ (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)	6 Months Ended
	Jun. 30, 2024
Revenues [Abstract]
Disaggregation of Revenues	Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Operating revenues Revenues contributing to earnings: Distribution base revenues Residential (a) $ 358 $ 307 $ 687 $ 551 Large commercial & industrial (b) 312 274 617 545 Other (c) 30 33 60 69 Total distribution base revenues 700 614 1,364 1,165 Transmission base revenues (TCOS revenues) Billed to third-party wholesale customers 263 238 525 488 Billed to REPs serving Oncor distribution customers, through TCRF 144 133 287 274 Total TCOS revenues 407 371 812 762 Other miscellaneous revenues 22 25 46 42 Total revenues contributing to earnings 1,129 1,010 2,222 1,969 Revenues collected for pass-through expenses: TCRF – third-party wholesale transmission service 351 322 702 643 EECRF and other revenues 12 11 26 23 Total revenues collected for pass-through expenses 363 333 728 666 Total operating revenues $ 1,492 $ 1,343 $ 2,950 $ 2,635 __________ (a) Distribution base revenues from residential customers are generally based on actual monthly consumption (kWh). (b) Depending on size and annual load factor, distribution base revenues from large commercial & industrial customers are based either on actual monthly demand (kilowatts) or the greater of actual monthly demand (kilowatts) or 80 % of peak monthly demand during the prior eleven months. (c) Includes distribution base revenues from small business customers whose billing is generally based on actual monthly consumption (kWh), lighting sites and other miscellaneous distribution base revenues.

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2024
Short-Term Borrowings [Abstract]
Schedule of Short-Term Borrowings	At June 30, At December 31, 2024 2023 $2B Credit Facility borrowing capacity $ 2,000 $ 2,000 $2B Credit Facility outstanding borrowings - - Commercial paper outstanding (a) - ( 282 ) Total available unused credit $ 2,000 $ 1,718 ____________ (a) The weighted average interest rate for CP Notes was 5.54 % at December 31, 2023. All outstanding CP Notes at December 31, 2023 had maturity dates of less than one year .

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Long-Term Debt [Abstract]
Schedule of Long-Term Debt	At June 30, At December 31, 2024 2023 Total U.S. Dollar-denominated Fixed Rate Senior Secured Notes $ 13,845 $ 13,445 Euro-denominated Fixed Rate Senior Secured Notes: 3.50 % Euro Notes due May 15, 2031 measured at issuance (a) 542 - Remeasurement adjustment at June 30, 2024 (b) ( 6 ) - Total Euro-denominated Fixed Rate Senior Secured Notes 536 - Total Fixed Rate Senior Secured Notes (c) 14,381 13,445 Variable Rate Secured Debt: AR Facility due April 28, 2027 (d) 140 - Variable Rate Unsecured Debt: $500M Credit Facility due February 21, 2027 (e) 500 - Total long-term debt 15,021 13,445 Unamortized discount, premium and debt issuance costs ( 159 ) ( 151 ) Long-term debt, noncurrent $ 14,862 $ 13,294 ___________ (a) On May 21, 2024, we issued the Euro Notes. Our euro-denominated fixed rate payment obligations under the Euro Notes were effectively converted to U.S. dollar-denominated fixed-rate payment obligations at issuance through concurrently-executed cross-currency swaps, which are expected to mitigate foreign currency exchange rate risk associated with the interest and principal payments on the Euro Notes that are due in euros. As a result of the cross-currency swaps, the U.S. dollar principal amount due on the Euro Notes at maturity will be $ 542 million and the all-in U.S. dollar fixed-rate coupon on the Euro Notes is 5.371 %. (b) The remeasurement was calculated based on the exchange rate of €1.00 to $ 1.0713 on June 30, 2024. (c) Our senior secured notes are secured equally and ratably by a first priority lien on certain transmission and distribution assets. See “Deed of Trust” below for additional information. (d) Amounts borrowed under our AR Facility are secured by accounts receivable from REPs and certain related rights under our AR Facility. See “AR Facility” below for additional information. (e) Amounts borrowed under the $500M Credit Facility are unsecured. See “$500M Credit Facility” below for additional information.
Schedule of Fixed Rate Senior Secured Notes	At June 30, At December 31, 2024 2023 U.S. Dollar-denominated Fixed Rate Senior Secured Notes: 2.75 % Senior Notes due June 1, 2024 $ - $ 500 2.95 % Senior Notes due April 1, 2025 (a) 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 5.50 % Senior Notes, Series C, due May 1, 2026 200 200 4.30 % Senior Notes due May 15, 2028 600 600 3.70 % Senior Notes due November 15, 2028 650 650 5.75 % Senior Notes due March 15, 2029 318 318 5.00 % Senior Notes, Series F, due May 1, 2029 100 - 2.75 % Senior Notes due May 15, 2030 700 700 5.34 % Senior Notes, Series D, due May 1, 2031 100 100 7.00 % Senior Notes due May 1, 2032 494 494 4.15 % Senior Notes due June 1, 2032 400 400 4.55 % Senior Notes due September 15, 2032 700 700 7.25 % Senior Notes due January 15, 2033 323 323 5.65 % Senior Notes due November 15, 2033 800 800 5.45 % Senior Notes, Series E, due May 1, 2036 100 100 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 400 400 4.95 % Senior Notes due September 15, 2052 900 900 5.35 % Senior Notes due October 1, 2052 300 300 5.49 % Senior Notes, Series G, due May 1, 2054 50 - 5.55 % Senior Notes due June 15, 2054 750 - Total U.S. dollar-denominated Fixed Rate Senior Secured Notes $ 13,845 $ 13,445 ___________ (a) In accordance with ASC 470-10 “Debt”, our ability to refinance $ 350 million aggregate principal amount of our 2.95 % Senior Notes due April 1, 2025 on a long-term basis, through the available capacity of our AR Facility , and our intent to refinance such notes on a long-term basis, results in $ 350 million being classified as long-term debt, noncurrent as of June 30, 2024.

Membership Interests (Tables)

Membership Interests (Tables)	6 Months Ended
	Jun. 30, 2024
Membership Interests [Abstract]
Schedule of Cash Capital Contributions	Receipt Dates Amounts February 16, 2024 $ 240 May 3, 2024 $ 240
Schedule of Distributions Paid	Declaration Dates Payment Dates Amounts February 14, 2024 February 15, 2024 $ 125 April 30, 2024 May 1, 2024 $ 126
Schedule of Changes to Membership Interests	Capital Account AOCI Total Membership Interests Balance at March 31, 2024 $ 14,728 $ ( 179 ) $ 14,549 Net income 251 - 251 Capital contributions 240 - 240 Distributions ( 126 ) - ( 126 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 1 1 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) - ( 13 ) ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) - ( 9 ) ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ 15,093 $ ( 199 ) $ 14,894 Balance at March 31, 2023 $ 13,727 $ ( 181 ) $ 13,546 Net income 200 - 200 Capital contributions 115 - 115 Distributions ( 149 ) - ( 149 ) Balance at June 30, 2023 $ 13,893 $ ( 181 ) $ 13,712 Capital Account AOCI Total Membership Interests Balance at December 31, 2023 $ 14,388 $ ( 180 ) $ 14,208 Net income 476 - 476 Contributions from members 480 - 480 Distributions to members ( 251 ) - ( 251 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 2 2 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) - ( 13 ) ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) - ( 9 ) ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ 15,093 $ ( 199 ) $ 14,894 Balance at December 31, 2022 $ 13,624 $ ( 162 ) $ 13,462 Net income 303 - 303 Contributions from members 221 - 221 Distributions to members ( 255 ) - ( 255 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) - 1 1 Defined benefit pension plans (a) - ( 20 ) ( 20 ) Balance at June 30, 2023 $ 13,893 $ ( 181 ) $ 13,712 ____________ (a) Includes a $ 20 million reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income in the first quarter of 2023, recorded as a result of the final order in our comprehensive base rate review (PUCT Docket No. 53601).
Schedule of Changes to Accumulated Other Comprehensive Income (Loss)	Derivative Hedges Defined Benefit Pension and OPEB Plans Total AOCI Balance at December 31, 2023 $ ( 34 ) $ ( 146 ) $ ( 180 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) 2 - 2 Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax) ( 13 ) - ( 13 ) Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax) ( 9 ) - ( 9 ) Defined benefit pension plans - 1 1 Balance at June 30, 2024 $ ( 54 ) $ ( 145 ) $ ( 199 ) Balance at December 31, 2022 $ ( 34 ) $ ( 128 ) $ ( 162 ) Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax) 1 - 1 Defined benefit pension plans (a) - ( 20 ) ( 20 ) Balance at June 30, 2023 $ ( 33 ) $ ( 148 ) $ ( 181 ) ____________ (a) Includes a $ 20 million reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income in the first quarter of 2023, recorded as a result of the final order in our comprehensive base rate review (PUCT Docket No. 53601).

Pension and OPEB Plans (Tables)

Pension and OPEB Plans (Tables)	6 Months Ended
	Jun. 30, 2024
Pension and OPEB Plans [Abstract]
Schedule of Pension and OPEB Plan Costs	Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Components of net pension costs: Service cost $ 7 $ 6 $ 13 $ 12 Interest cost (a) 30 30 60 61 Expected return on assets (a) ( 29 ) ( 32 ) ( 58 ) ( 64 ) Amortization of net loss (a) 1 - 2 1 Net pension costs 9 4 17 10 Net adjustments (b) ( 3 ) 2 ( 5 ) 6 Net pension costs recognized as operation and maintenance expense or other deductions $ 6 $ 6 $ 12 $ 16 Components of net OPEB costs: Service cost $ 1 $ 1 $ 2 $ 2 Interest cost (a) 8 8 16 16 Expected return on assets (a) ( 2 ) ( 2 ) ( 4 ) ( 4 ) Amortization of net loss (a) ( 2 ) ( 8 ) ( 4 ) ( 16 ) Net OPEB costs 5 ( 1 ) 10 ( 2 ) Net adjustments (b) ( 3 ) 5 ( 6 ) 14 Net OPEB costs recognized as operation and maintenance expense or other deductions $ 2 $ 4 $ 4 $ 12 ___________ (a) The components of net costs other than the service cost component, are recorded in “Other (income) and deductions – net” in Condensed Statements of Consolidated Income. (b) Net adjustments include amounts principally deferred as property, plant and equipment, regulatory assets or regulatory liabilities.

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2024
Related-Party Transactions [Abstract]
Schedule of Amounts Payable to (Receivables from) Related Parties	At June 30, 2024 At December 31, 2023 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes (receivable) payable $ ( 19 ) $ ( 4 ) $ ( 23 ) $ ( 3 ) $ ( 1 ) $ ( 4 ) Texas margin tax payable 15 - 15 27 - 27 Net (receivable) payable $ ( 4 ) $ ( 4 ) $ ( 8 ) $ 24 $ ( 1 ) $ 23
Schedule of Cash Payments Made to Related Parties to Income Taxes	Six Months Ended June 30, 2024 Six Months Ended June 30, 2023 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes $ 36 $ 9 $ 45 $ 35 $ 8 $ 43 Texas margin tax 26 - 26 25 - 25 Total payments $ 62 $ 9 $ 71 $ 60 $ 8 $ 68

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	6 Months Ended
	Jun. 30, 2024
Derivatives and Hedging [Abstract]
Schedule of Foreign Currency Derivatives	Fair Value Gain (Loss) Notional Amount Pay Rate Receive Amount Receive Rate Maturity Three Months Ended June 30, 2024 Six Months Ended June 30, 2024 Cross-currency swaps (a) $ 542 5.371 % € 500 million 3.50 % 2031 $ ( 17 ) $ ( 17 ) ___________ (a) Notional amount reflects the aggregate amount we received in U.S. dollars upon execution of the cross-currency swaps in exchange for transferring the receive amount to the counterparties of the cross-currency swaps. As a result of the cross-currency swaps relating to the Euro Notes, our all-in U.S. dollar fixed-rate coupon on the U.S. dollar notional amount is 5.371 %.
Schedule of Derivative Assets and Liabilities	At June 30, 2024 Balance Sheet Location Fair Value of Derivative Liabilities Cross-currency swaps Operating lease and other obligations $ 17
Schedule of Related Income Statement Impacts of Derivative Activity	Three Months Ended June 30, Six Months Ended June 30, Income Statement Location 2024 2024 Cross-currency swaps Loss on foreign currency derivatives (a) $ 6 $ 6 ____________ (a) The fair value loss on cross-currency swaps attributable to changes in the foreign currency exchange rate was recorded in the income statement offsetting the gain due to remeasurement of Euro Notes, resulting in no impact on earnings attributable to change in foreign currency exchange rate . The fair value loss on cross-currency swaps attributable to excluded components was recognized as a component of other comprehensive income or loss.

Supplementary Financial Infor_2

Supplementary Financial Information (Tables)	6 Months Ended
	Jun. 30, 2024
Supplementary Financial Information [Abstract]
Schedule of Other (Income) and Deductions - Net	Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Professional fees $ 1 $ 3 $ 2 $ 5 Recoverable Pension and OPEB – non-service costs 5 8 9 23 Non-recoverable pension and OPEB - ( 1 ) - ( 1 ) AFUDC – equity income ( 14 ) ( 12 ) ( 27 ) ( 23 ) Interest and investment income – net ( 8 ) ( 3 ) ( 16 ) ( 4 ) Other - - 2 2 Total other (income) and deductions – net $ ( 16 ) $ ( 5 ) $ ( 30 ) $ 2
Schedule of Interest Expense and Related Charges	Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Interest $ 168 $ 137 $ 324 $ 263 Amortization of discount, premium and debt issuance costs 3 3 6 6 Less AFUDC – capitalized interest portion ( 10 ) ( 7 ) ( 19 ) ( 13 ) Total interest expense and related charges $ 161 $ 133 $ 311 $ 256
Schedule of Accounts Receivable - Net	At June 30, At December 31, 2024 2023 Accounts receivable $ 1,166 $ 958 Allowance for uncollectible accounts ( 16 ) ( 14 ) Accounts receivable – net $ 1,150 $ 944
Schedule of Prepayment and Other Current Assets	At June 30, At December 31, 2024 2023 Insurance prepayments $ 57 $ 9 Local franchise tax prepayments 108 78 Other 18 14 Prepayments and other current assets $ 183 $ 101
Summary of Investments and Other Property	At June 30, At December 31, 2024 2023 Assets related to employee benefit plans $ 151 $ 137 Non-utility property – land 19 19 Other 1 2 Total investments and other property $ 171 $ 158
Summarized Financial Information for Consolidated VIE	At June 30, At December 31, 2024 2023 Assets Cash and cash equivalents $ 4 $ - REP Accounts receivable – net 716 638 Income tax receivable 6 4 Unamortized AR Facility costs ( 2 ) 2 Total assets $ 724 $ 644 Liabilities Long-term debt $ 140 $ - Total liabilities $ 140 $ -
Schedule of Property, Plant and Equipment	Composite Depreciation Rate/Average Life of Depreciable Plant At June 30, 2024 At June 30, 2024 At December 31, 2023 Assets in service: Distribution 2.7 % / 36.4 years $ 19,792 $ 18,865 Transmission 2.4 % / 42.0 years 15,640 15,001 Other assets 7.9 % / 12.7 years 2,074 2,097 Total 37,506 35,963 Less accumulated depreciation 9,511 9,301 Net of accumulated depreciation 27,995 26,662 Construction work in progress 1,649 1,339 Held for future use 83 56 Property, plant and equipment – net $ 29,727 $ 28,057
Schedule of Intangible Assets	At June 30, 2024 At December 31, 2023 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Identifiable intangible assets subject to amortization: Land easements $ 682 $ 131 $ 551 $ 679 $ 127 $ 552 Capitalized software and other 1,212 421 791 1,238 416 822 Total $ 1,894 $ 552 $ 1,342 $ 1,917 $ 543 $ 1,374
Schedule of Estimated Aggregate Amortization Expenses	Year Amortization Expense 2024 $ 113 2025 $ 113 2026 $ 113 2027 $ 113 2028 $ 113
Schedule of Operating Lease and Other Obligations	At June 30, At December 31, 2024 2023 Operating lease liabilities (a) $ 116 $ 112 Investment tax credits 2 3 Customer advances for construction – noncurrent 125 105 Litigation claim obligations 84 6 Fair value of derivative liabilities 17 - Other 78 79 Total operating lease and other obligations $ 422 $ 305 ____________ (a) Excludes the effects of a 15 -year operating lease contract entered into in December 2023 that is scheduled to commence in the second half of 2024. The estimated $ 64 million present value of the lease obligation is not yet recorded on the Condensed Consolidated Balance Sheets.
Schedule of Supplemental Cash Flow Information	Six Months Ended June 30, 2024 2023 Cash payments related to: Interest $ 306 $ 245 Less capitalized interest ( 19 ) ( 13 ) Total interest payments (net of amounts capitalized) $ 287 $ 232 Amount in lieu of income taxes (Note 9): Federal $ 45 $ 43 State 26 25 Total payments in lieu of income taxes $ 71 $ 68 Noncash investing activities: Construction expenditures financed through accounts payable (a) $ 344 $ 244 ______________ (a) Represents end-of-period accruals .

Business and Significant Acco_4

Business and Significant Accounting Policies (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) segment item	Dec. 31, 2023 USD ($)
Business And Significant Accounting Polices [Line Items]
Number of reportable business segments | segment	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
Goodwill | $	$ 4,740	$ 4,740
Sempra Energy [Member]
Business And Significant Accounting Polices [Line Items]
Number of disinterested directors	2
Texas Transmission [Member]
Business And Significant Accounting Polices [Line Items]
Ownership	19.75%	19.75%
Number of disinterested directors	2
Oncor Holdings [Member]
Business And Significant Accounting Polices [Line Items]
Ownership	80.25%
Number of disinterested directors	2
Minimum [Member]
Business And Significant Accounting Polices [Line Items]
Disinterested directors expenditure budget percentage	10%

Business and Significant Acco_5

Business and Significant Accounting Policies (Schedule of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Business and Significant Accounting Policies [Abstract]
Cash and cash equivalents	$ 20	$ 19
Restricted cash, current	32	24
Restricted cash, noncurrent	131	108
Total cash, cash equivalents and restricted cash on the Condensed Statements of Consolidated Cash Flows	$ 183	$ 151	$ 116	$ 98

Regulatory Matters (Narrative)

Regulatory Matters (Narrative) (Details) - System Resiliency Plan [Member] - USD ($) $ in Millions		6 Months Ended
	May 06, 2024	Jun. 30, 2024
Public Utilities, General Disclosures [Line Items]
Capital expenditures amount	$ 2,900
Approval of operation and maintenance expenses	$ 520
Period to enhance resiliency of transmission and distribution system		3 years

Regulatory Matters (Schedule of

Regulatory Matters (Schedule of Interim Rate Update Applications) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ (69)
DCRF [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Interim Rate Increase (Decrease), Amount	$ 81

Regulatory Matters (Components

Regulatory Matters (Components of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 1,721	$ 1,556
Total regulatory liabilities	2,951	3,000
Estimated Net Removal Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory liabilities	1,559	1,519
Excess Deferred Taxes [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory liabilities	$ 1,279	1,311
Over-Recovered Wholesale Transmission Service Expense [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	1 year
Total regulatory liabilities		64
Unamortized Gain On Reacquisition Of Debt [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory liabilities	$ 24	25
Employee Retirement Costs Over-Recovered Since Last Comprehensive Rate Review Period [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory liabilities	$ 40	39
Employee Retirement Costs Over Recovered Being Refunded [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	4 years
Total regulatory liabilities	$ 21	23
Other Regulatory Liabilities [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory liabilities	28	19
Net regulatory (liabilities) assets	(1,230)	(1,444)
Employee Retirement Liability [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 191	189
Employee Retirement Costs Being Amortized [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	4 years
Total regulatory assets	$ 78	94
Employee Retirement Costs Incurred Since the Last Comprehensive Base Rate Review Periods [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 71	70
Self-Insurance Reserve (Primarily Storm Recovery Costs) Being Amortized [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	4 years
Total regulatory assets	$ 395	454
Self-Insurance Reserve Incurred Since the Last Comprehensive Base Rate Review Periods (Primarily Storm Related) [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	673	438
Debt Reacquisition Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 8	10
Under-recovered AMS Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	4 years
Total regulatory assets	$ 70	83
Energy Efficiency Performance Bonus [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	1 year
Total regulatory assets	$ 10	21
Wholesale Distribution Substation Service Costs [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	4 years
Total regulatory assets	$ 58	65
Wholesale Distribution Substation Service Costs Incurred Since the Last Comprehensive Base Rate Review Periods [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	28	28
Expenses Related To Covid 19 [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	29	32
Recoverable Deferred Income Taxes - Net [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	45	38
Uncollectible Payments From REPs [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 9	7
Under-Recovered Wholesale Transmission Service Expense [Member]
Regulatory Assets And Liabilities [Line Items]
Remaining Rate Recovery/Amortization Period	1 year
Total regulatory assets	$ 25
Other Regulatory Assets [Member]
Regulatory Assets And Liabilities [Line Items]
Total regulatory assets	$ 31	$ 27

Revenues (Narrative) (Details)

Revenues (Narrative) (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2024 customer	Jun. 30, 2024 customer item
Disaggregation of Revenue [Line Items]
Number of largest customers | customer	2	2
Number of REPS | item		100
Payment term		35 days
REP Subsidiary One [Member] | Customers [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage	22%	24%
REP Subsidiary Two [Member] | Customers [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration risk percentage	20%	22%

Revenues (Disaggregation of Rev

Revenues (Disaggregation of Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	$ 1,129	$ 1,010	$ 2,222	$ 1,969
Total revenues collected for pass-through expenses	363	333	728	666
Total operating revenues	1,492	1,343	$ 2,950	2,635
Percent of peak monthly demand			80%
Distribution Base Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	700	614	$ 1,364	1,165
Distribution Base Revenues [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	358	307	687	551
Distribution Base Revenues [Member] | Large Commercial & Industrial [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	312	274	617	545
Distribution Base Revenues [Member] | Other Distribution Base Revenue [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	30	33	60	69
Transmission Base Revenues (TCOS Revenues) [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	407	371	812	762
Transmission Base Revenues (TCOS Revenues) [Member] | Third-Party Wholesale Customers [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	263	238	525	488
Transmission Base Revenues (TCOS Revenues) [Member] | REPS Serving Oncor Distribution Customers, Through TCRF [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	144	133	287	274
Other Miscellaneous Revenues [Member]
Disaggregation of Revenue [Line Items]
Total revenues contributing to earnings	22	25	46	42
TCRF - Third-party Wholesale Transmission Service [Member]
Disaggregation of Revenue [Line Items]
Total revenues collected for pass-through expenses	351	322	702	643
EECRF [Member]
Disaggregation of Revenue [Line Items]
Total revenues collected for pass-through expenses	$ 12	$ 11	$ 26	$ 23

Short-Term Borrowings (Narrativ

Short-Term Borrowings (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
$2B Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 2,000
Increments in additional borrowing capacity	$ 100
Maximum pricing adjustment on commitment fee, percentage	0.01%
Maximum pricing adjustment on applicable margin, percentage	0.05%
Maximum indebtedness amount before default	$ 100
Maximum judgement for payment amount before default	$ 100
Discharge period	60 days
$2B Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0%
Commitment fee	0.075%
Debt to capitalization ratio	0.65
$2B Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Increments in additional borrowing capacity	$ 400
Spread over variable rate	0.50%
Commitment fee	0.225%
Debt to capitalization ratio	1
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 2,000
Commercial Paper [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Credit facility, term	397 days
Secured Overnight Financing Rate (SOFR) [Member] | $2B Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate adjustment	0.10%
Variable rate plus interest rate adjustment	1%
Secured Overnight Financing Rate (SOFR) [Member] | $2B Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.875%
Secured Overnight Financing Rate (SOFR) [Member] | $2B Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	1.50%
Federal Funds Effective Rate or Overnight Bank Funding Rate [Member] | $2B Credit Facility [Member]
Line of Credit Facility [Line Items]
Spread over variable rate	0.50%

Short-Term Borrowings (Schedule

Short-Term Borrowings (Schedule of Short-Term Borrowings) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Total credit facility borrowing capacity	$ 2,000	$ 2,000
Available unused credit	$ 2,000	1,718
Commercial Paper [Member]
Short-term Debt [Line Items]
Outstanding		$ (282)
Interest Rate		5.54%
Loan term	1 year

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) € in Millions, $ in Millions					1 Months Ended	6 Months Ended
	May 21, 2024 USD ($)	Apr. 26, 2024	Apr. 24, 2024 USD ($)	Feb. 21, 2024 USD ($)	Apr. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 27, 2024 USD ($)	May 21, 2024 EUR (€)	Apr. 29, 2024 USD ($)	Dec. 31, 2023 USD ($)
Long-Term Debt [Line Items]
Percentage of fair value of cost of property additions certified to the Deed of Trust collateral agent						85%
Repayments of long-term debt						$ 500
Estimated fair value of our long-term debt including current maturities						13,796				$ 12,798
Carrying amount						14,862				13,294
AR Facility [Member]
Long-Term Debt [Line Items]
Aggregate principal amount							$ 140		$ 100
Repayments of long-term debt	$ 400
Extension, subject to consent, increments		1 year
Notes term		30 days
Senior Notes due June 15, 2054 [Member] | Interest Rate Swap [Member]
Long-Term Debt [Line Items]
Net effects of cash flow hedges, tax expense						$ (13)
Notes term						30 years
Secured Debt [Member]
Long-Term Debt [Line Items]
Aggregate principal amount						$ 14,381				13,445
Secured Debt [Member] | AR Facility [Member]
Long-Term Debt [Line Items]
Aggregate principal amount						140
Debt service fee percentage					1%
Maximum borrowing capacity					$ 500	500
Borrowings						140
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Long-Term Debt [Line Items]
Aggregate principal amount						13,845				$ 13,445
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Notes 2028 and Notes 2052 [Member]
Long-Term Debt [Line Items]
Percentage of principal amount plus accrued and unpaid interest and make-whole premium			100%
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Senior Notes, Series F, due May 1, 2029 [Member]
Long-Term Debt [Line Items]
Aggregate principal amount			$ 100			$ 100
Interest rate			5%			5%
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Senior Notes, Series G, due May 1, 2054 [Member]
Long-Term Debt [Line Items]
Aggregate principal amount			$ 50			$ 50
Interest rate			5.49%			5.49%
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Senior Notes due June 15, 2054 [Member]
Long-Term Debt [Line Items]
Aggregate principal amount						$ 750
Interest rate						5.55%
Percentage of principal amount plus accrued and unpaid interest and make-whole premium						100%
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Senior Secured Notes Due June 1, 2024 [Member]
Long-Term Debt [Line Items]
Interest rate						2.75%
Repayments of long-term debt						$ 500
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Minimum [Member] | March 2024 Note Purchase Agreement [Member
Long-Term Debt [Line Items]
Senior debt to capitalization ratio			0.65
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member] | Maximum [Member] | March 2024 Note Purchase Agreement [Member
Long-Term Debt [Line Items]
Senior debt to capitalization ratio			1
Euro-Denominated Fixed Rate Senior Secured Notes [Member]
Long-Term Debt [Line Items]
Aggregate principal amount						$ 536
Interest rate						5.371%
Euro-Denominated Fixed Rate Senior Secured Notes [Member] | Euro Notes due May 15, 2031 [Member]
Long-Term Debt [Line Items]
Aggregate principal amount	$ 542					$ 542		€ 500
Interest rate	5.371%					3.50%		5.371%		3.50%
Percentage of principal amount plus accrued and unpaid interest and make-whole premium						100%
$2B Credit Facility [Member]
Long-Term Debt [Line Items]
Maximum borrowing capacity						$ 2,000
Increments in additional borrowing capacity						$ 100
$2B Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Variable rate plus interest rate adjustment						1%
Interest rate adjustment						0.10%
$2B Credit Facility [Member] | Federal Funds Effective Rate or Overnight Bank Funding Rate [Member]
Long-Term Debt [Line Items]
Spread over variable rate						0.50%
$2B Credit Facility [Member] | Minimum [Member]
Long-Term Debt [Line Items]
Spread over variable rate						0%
Commitment fee						0.075%
$2B Credit Facility [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Spread over variable rate						0.875%
$2B Credit Facility [Member] | Maximum [Member]
Long-Term Debt [Line Items]
Spread over variable rate						0.50%
Commitment fee						0.225%
Increments in additional borrowing capacity						$ 400
$2B Credit Facility [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Spread over variable rate						1.50%
Revolving $500 Million Credit Facility [Member]
Long-Term Debt [Line Items]
Maximum borrowing capacity				$ 500
Borrowings						$ 500
Extension, subject to consent, increments				1 year
Increments in additional borrowing capacity				$ 100
Revolving $500 Million Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Variable rate plus interest rate adjustment				1%
Revolving $500 Million Credit Facility [Member] | Federal Funds Effective Rate or Overnight Bank Funding Rate [Member]
Long-Term Debt [Line Items]
Spread over variable rate				0.50%
Revolving $500 Million Credit Facility [Member] | Minimum [Member]
Long-Term Debt [Line Items]
Spread over variable rate				0%
Commitment fee				0.075%
Revolving $500 Million Credit Facility [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Spread over variable rate				0.875%
Revolving $500 Million Credit Facility [Member] | Maximum [Member]
Long-Term Debt [Line Items]
Maximum borrowing capacity				$ 500
Spread over variable rate				0.50%
Commitment fee				0.625%
Revolving $500 Million Credit Facility [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Long-Term Debt [Line Items]
Spread over variable rate				1.50%
Commercial Paper [Member]
Long-Term Debt [Line Items]
Maximum borrowing capacity						$ 2,000
Borrowings										$ 282
Notes term						1 year

Long-Term Debt (Schedule of Lon

Long-Term Debt (Schedule of Long-Term Debt) (Details) € in Millions, $ in Millions	Jun. 30, 2024 USD ($)	Jun. 27, 2024 USD ($)	May 21, 2024 USD ($)	May 21, 2024 EUR (€)	Apr. 29, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Total long-term debt	$ 15,021					$ 13,445
Unamortized discount, premium and debt issuance costs	(159)					(151)
Long-term debt, noncurrent	$ 14,862					13,294
Exchange rate	1.0713
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 13,845					13,445
Euro-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 536
Interest rate	5.371%
Secured Debt [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 14,381					$ 13,445
Euro Notes due May 15, 2031 [Member] | Euro-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 542		$ 542	€ 500
Interest rate	3.50%		5.371%	5.371%		3.50%
AR Facility [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt		$ 140			$ 100
AR Facility [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 140
Credit Facility due February 21, 2027 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Variable rate unsecured long-term debt	500
Remeasurement adjustment at June 30, 2024 [Member] | Euro-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ (6)

Long-Term Debt (Schedule of Fix

Long-Term Debt (Schedule of Fixed Rate Senior Secured Notes) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Apr. 24, 2024	Dec. 31, 2023
U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 13,845		$ 13,445
Euro-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 536
Interest rate	5.371%
Senior Notes due June 1, 2024 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt			$ 500
Interest rate	2.75%		2.75%
Senior Notes due April 1, 2025 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 350		$ 350
Interest rate	2.95%		2.95%
Available for borrowing	$ 350
Senior Notes due October 1, 2025 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 450		$ 450
Interest rate	0.55%		0.55%
Senior Notes, Series A, due December 3, 2025 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 174		$ 174
Interest rate	3.86%		3.86%
Senior Notes, Series B, due January 14, 2026 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 38		$ 38
Interest rate	3.86%		3.86%
Senior Notes, Series C, due May 1, 2026 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 200		$ 200
Interest rate	5.50%		5.50%
Senior Notes due May 15, 2028 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 600		$ 600
Interest rate	4.30%		4.30%
Senior Notes due November 15, 2028 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 650		$ 650
Interest rate	3.70%		3.70%
Senior Notes due March 15, 2029 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 318		$ 318
Interest rate	5.75%		5.75%
Senior Notes, Series F, due May 1, 2029 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 100	$ 100
Interest rate	5%	5%
Senior Notes due May 15, 2030 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 700		$ 700
Interest rate	2.75%		2.75%
Senior Notes, Series D, due May 1, 2031 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 100		$ 100
Interest rate	5.34%		5.34%
Senior Notes due May 1, 2032 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 494		$ 494
Interest rate	7%		7%
Senior Notes due June 1, 2032 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 400		$ 400
Interest rate	4.15%		4.15%
Senior Notes due September 15, 2032 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 700		$ 700
Interest rate	4.55%		4.55%
Senior Notes due January 15, 2033 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 323		$ 323
Interest rate	7.25%		7.25%
Senior Notes due November 15, 2033 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 800		$ 800
Interest rate	5.65%		5.65%
Senior Notes, Series E, due May 1, 2036 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 100		$ 100
Interest rate	5.45%		5.45%
Senior Notes due September 1, 2038 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 300		$ 300
Interest rate	7.50%		7.50%
Senior Notes due September 30, 2040 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 475		$ 475
Interest rate	5.25%		5.25%
Senior Notes due December 1, 2041 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 400		$ 400
Interest rate	4.55%		4.55%
Senior Notes due June 1, 2042 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 348		$ 348
Interest rate	5.30%		5.30%
Senior Notes due April 1, 2045 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 550		$ 550
Interest rate	3.75%		3.75%
Senior Notes due September 30, 2047 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 325		$ 325
Interest rate	3.80%		3.80%
Senior Notes due November 15, 2048 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 450		$ 450
Interest rate	4.10%		4.10%
Senior Notes due June 1, 2049 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 500		$ 500
Interest rate	3.80%		3.80%
Senior Notes due September 15, 2049 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 700		$ 700
Interest rate	3.10%		3.10%
Senior Notes due May 15, 2050 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 400		$ 400
Interest rate	3.70%		3.70%
Senior Notes Due November 15, 2051 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 500		$ 500
Interest rate	2.70%		2.70%
Senior Notes due June 1, 2052 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 400		$ 400
Interest rate	4.60%		4.60%
Senior Notes due September 15, 2052 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 900		$ 900
Interest rate	4.95%		4.95%
Senior Notes due October 1, 2052 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 300		$ 300
Interest rate	5.35%		5.35%
Senior Notes, Series G, due May 1, 2054 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 50	$ 50
Interest rate	5.49%	5.49%
Senior Notes due June 15, 2054 [Member] | U.S. Dollar-Denominated Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed rate secured long-term debt	$ 750
Interest rate	5.55%

Commitments And Contingencies (

Commitments And Contingencies (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Commitments and Contingencies [Abstract]
Operating leases treated as capital leases	$ 4
Refunded settlement amount, net of consulting fees	$ 63
Operating lease, not yet commenced, term	15 years
Decrease in property, plant and equipment balance	$ 53
Decrease in operation and maintenance amount	10
Operating lease, lease not yet commenced, amount	$ 64

Membership Interests (Narrative

Membership Interests (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Jul. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jul. 30, 2024
Subsequent Event [Line Items]
Members contribution		$ 480	$ 221
Cash distribution		$ 259
Current authorized regulatory capitalization ratio, debt		57.50%
Current authorized regulatory capitalization ratio, equity		42.50%
Regulatory capitalization ratio, debt		56.90%
Regulatory capitalization ratio, equity		43.10%
Subsequent Event [Member]
Subsequent Event [Line Items]
Members contribution	$ 240
Cash distribution				$ 125

Membership Interests (Schedule

Membership Interests (Schedule of Cash Capital Contributions) (Details) - USD ($) $ in Millions			6 Months Ended
	May 03, 2024	Feb. 16, 2024	Jun. 30, 2024	Jun. 30, 2023
Dividends Payable [Line Items]
Members contribution			$ 480	$ 221
Payment Quater One [Member]
Dividends Payable [Line Items]
Payment Date		Feb. 16, 2024
Members contribution		$ 240
Payment Quater Two [Member]
Dividends Payable [Line Items]
Payment Date	May 03, 2024
Members contribution	$ 240

Membership Interests (Schedul_2

Membership Interests (Schedule of Distributions Paid) (Details) - USD ($) $ in Millions			6 Months Ended
	Apr. 30, 2024	Feb. 14, 2024	Jun. 30, 2024	Jun. 30, 2023
Dividends Payable [Line Items]
Amount			$ 251	$ 255
Payment Quater One [Member]
Dividends Payable [Line Items]
Declaration Date		Feb. 14, 2024
Payment Date		Feb. 15, 2024
Amount		$ 125
Payment Quater Two [Member]
Dividends Payable [Line Items]
Declaration Date	Apr. 30, 2024
Payment Date	May 01, 2024
Amount	$ 126

Membership Interests (Schedul_3

Membership Interests (Schedule of Changes to Membership Interests) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Balance				$ 14,208
Net income	$ 251	$ 200		476	$ 303
Contributions from members				480	221
Distributions to members				(251)	(255)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	1			2	1
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	9			9
Defined benefit pension plans	1			1	(20)
Balance	14,894			14,894
Capital Accounts [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Balance	14,728	13,727	$ 13,624	14,388	13,624
Net income	251	200		476	303
Contributions from members	240	115		480	221
Distributions to members	(126)	(149)		(251)	(255)
Balance	15,093	13,893	13,727	15,093	13,893
Accumulated Other Comprehensive Income (Loss) [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Balance	(179)	(181)	(162)	(180)	(162)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	1			2	1
Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax)	(13)			(13)
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	(9)			(9)
Defined benefit pension plans	1			1	(20)
Balance	(199)	(181)	(181)	(199)	(181)
Reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income			20
Membership Interests [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Balance	14,549	13,546	13,462	14,208	13,462
Net income	251	200		476	303
Contributions from members	240	115		480	221
Distributions to members	(126)	(149)		(251)	(255)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	1			2	1
Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax)	(13)			(13)
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	(9)			(9)
Defined benefit pension plans	1			1	(20)
Balance	$ 14,894	$ 13,712	13,546	$ 14,894	$ 13,712
Reclassification from regulatory assets related to employee retirement liabilities to other comprehensive income			$ 20

Membership Interests (Schedul_4

Membership Interests (Schedule of Changes to Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period				$ (180)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	$ 1			2	$ 1
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	9			9
Balance at end of period	(199)			(199)
Derivative Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			$ (34)	(34)	(34)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)				2	1
Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax)				(13)
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)				(9)
Balance at end of period	(54)	(33)		(54)	(33)
Defined Benefit Pension and OPEB Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			(128)	(146)	(128)
Defined benefit pension plans				(1)	(20)
Balance at end of period	(145)	(148)		(145)	(148)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			(162)	(180)	(162)
Cash flow hedges – amount reclassified from AOCI and reported in interest expense and related charges (net of tax)	1			2	1
Cash flow hedges – (loss) gain on settlement of interest rate hedge transactions (net of tax)	(13)			(13)
Fair value hedges – unrealized (loss) gain of cross-currency swaps attributable to excluded components (net of tax)	(9)			(9)
Defined benefit pension plans				(1)	(20)
Balance at end of period	$ (199)	$ (181)		$ (199)	$ (181)
Reclassification from Regulatory Assets related to Employee Retirement Liabilities to Other Comprehensive Income			$ 20

Pension and OPEB Plans (Narrati

Pension and OPEB Plans (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) item
Defined Benefit Plan Disclosure [Line Items]
Percent of service assigned to entity	100%
Number of OPEB plans | item	2
Oncor Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	5.78%
Discount rate	4.76%
Vistra Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	6.29%
Discount rate	4.97%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	$ 23
Additional cash contributions	68
Additional cash contributions, next five years	532
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	12
Additional cash contributions	11
Additional cash contributions, next five years	$ 125
Expected return on plan assets	6.72%
Discount rate	4.99%

Pension and OPEB Plans (Schedul

Pension and OPEB Plans (Schedule of Pension and OPEB Plan Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7	$ 6	$ 13	$ 12
Interest cost	30	30	60	61
Expected return on assets	(29)	(32)	(58)	(64)
Amortization of net loss	1		2	1
Net pension and OPEB costs	9	4	17	10
Net adjustments	(3)	2	(5)	6
Net pension and OPEB costs recognized as operation and maintenance expense or other deductions	6	6	12	16
OPEB Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	2
Interest cost	8	8	16	16
Expected return on assets	(2)	(2)	(4)	(4)
Amortization of net loss	(2)	(8)	(4)	(16)
Net pension and OPEB costs	5	(1)	10	(2)
Net adjustments	(3)	5	(6)	14
Net pension and OPEB costs recognized as operation and maintenance expense or other deductions	$ 2	$ 4	$ 4	$ 12

Related-Party Transactions (Nar

Related-Party Transactions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Revenue from contracts	$ 1,492	$ 1,343	$ 2,950	$ 2,635
Sharyland Distribution & Transmission Services (SDTS) [Member]
Related Party Transaction [Line Items]
Revenue from contracts	$ 4	$ 4	$ 8	8
Sharyland Distribution & Transmission Services (SDTS) [Member] | Parent Of Sharyland [Member] | Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Percentage of membership interest owned by non-controlling owners	50%		50%
Maximum [Member] | Sharyland Distribution & Transmission Services (SDTS) [Member]
Related Party Transaction [Line Items]
Substation monitoring and switching services			$ 1	$ 1

Related-Party Transactions (Sch

Related-Party Transactions (Schedule of Amounts Payable to (Receivables from) Related Parties) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Federal income taxes (receivable) payable	$ (23)
Federal income taxes (receivable) payable		$ (4)
Texas margin tax payable	15	27
Net (receivable) payable	(8)	23
Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Federal income taxes (receivable) payable	(19)
Federal income taxes (receivable) payable		(3)
Texas margin tax payable	15	27
Net (receivable) payable	(4)	24
Texas Transmission [Member]
Related Party Transaction [Line Items]
Federal income taxes (receivable) payable	(4)
Federal income taxes (receivable) payable		(1)
Net (receivable) payable	$ (4)	$ (1)

Related-Party Transactions (S_2

Related-Party Transactions (Schedule of Cash Payments Made to Related Parties to Income Taxes) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Federal income taxes	$ 45	$ 43
Texas margin tax	26	25
Total payments	71	68
Sempra Texas Holdings [Member]
Related Party Transaction [Line Items]
Federal income taxes	36	35
Texas margin tax	26	25
Total payments	62	60
Texas Transmission [Member]
Related Party Transaction [Line Items]
Federal income taxes	9	8
Total payments	$ 9	$ 8

Derivative and Hedging (Narrati

Derivative and Hedging (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) item	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) item	Jun. 30, 2023 USD ($)
Derivative [Line Items]
Amounts reported in accumulated other comprehensive loss	$ 1		$ 2	$ 1
Cross-Currency Swaps [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Fair Value Gain (Loss)	(17)		$ (17)
Cash flow hedges – loss on settlement	11
Amounts reported in accumulated other comprehensive loss	$ 9
Interest Rate Swap [Member]
Derivative [Line Items]
Number of interest rate derivatives | item	0		0
Interest Rate Swap [Member] | Senior Notes due June 15, 2054 [Member]
Derivative [Line Items]
Fair Value Gain (Loss)			$ (17)
Cash flow hedges – loss on settlement			(13)
Amounts reported in accumulated other comprehensive loss			$ 5
Notes term			30 years

Derivative and Hedging (Schedul

Derivative and Hedging (Schedule of Foreign Currency Derivatives) (Details) - Cross-Currency Swaps [Member] - Designated as Hedging Instrument [Member] € in Millions, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)
Derivative [Line Items]
Notional Amount	$ 542	$ 542
Pay Rate	5.371%	5.371%	5.371%
Receive Amount | €			€ 500
Receive Rate		3.50%
Maturity		Dec. 31, 2031
Fair Value Gain (Loss)	$ (17)	$ (17)

Derivative and Hedging (Sched_2

Derivative and Hedging (Schedule of Related Income Statement Impacts of Derivative Activity) (Details) $ in Millions	Jun. 30, 2024 USD ($)
Designated as Hedging Instrument [Member] | Cross-Currency Swaps [Member] | Operating Lease And Other Obligations [Member]
Derivative [Line Items]
Fair Value of Derivative Liabilities	$ 17

Derivative and Hedging (Sched_3

Derivative and Hedging (Schedule of Derivative Assets and Liabilities) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024
Designated as Hedging Instrument [Member] | Cross-Currency Swaps [Member]
Derivative [Line Items]
Loss on foreign currency derivatives	$ 6	$ 6

Supplementary Financial Infor_3

Supplementary Financial Information (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) item customer	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) item customer	Jun. 30, 2023 USD ($)	Dec. 31, 2023 item
Supplemental Financial Information [Line Items]
Number of largest customers | customer	2		2
Aggregate amortization expenses | $	$ 28	$ 24	$ 57	$ 46
Trade Accounts Receivable [Member]
Supplemental Financial Information [Line Items]
Number of largest customers | item	2		2		2
Customers [Member] | Trade Accounts Receivable [Member] | Non-affiliated REP [Member]
Supplemental Financial Information [Line Items]
Concentration risk percentage			20%		22%
Customers [Member] | Trade Accounts Receivable [Member] | Second Nonaffiliated REP [Member]
Supplemental Financial Information [Line Items]
Concentration risk percentage			18%		20%

Supplementary Financial Infor_4

Supplementary Financial Information (Schedule of Other (Income) and Deductions - Net) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Supplementary Financial Information [Abstract]
Professional fees	$ 1	$ 3	$ 2	$ 5
Recoverable pension and OPEB - non-service costs	5	8	9	23
Non-recoverable pension and OPEB		(1)		(1)
AFUDC – equity income	(14)	(12)	(27)	(23)
Interest and investment income - net	(8)	(3)	(16)	(4)
Other			2	2
Total other (income) and deductions - net	$ (16)	$ (5)	$ (30)	$ 2

Supplementary Financial Infor_5

Supplementary Financial Information (Schedule of Interest Expense and Related Charges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Supplementary Financial Information [Abstract]
Interest	$ 168	$ 137	$ 324	$ 263
Amortization of discount, premium and debt issuance costs	3	3	6	6
Less AFUDC – capitalized interest portion	(10)	(7)	(19)	(13)
Total interest expense and related charges	$ 161	$ 133	$ 311	$ 256

Supplementary Financial Infor_6

Supplementary Financial Information (Schedule of Accounts Receivable - Net) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Supplementary Financial Information [Abstract]
Accounts receivable	$ 1,166	$ 958
Allowance for uncollectible accounts	(16)	(14)
Accounts receivable – net	$ 1,150	$ 944

Supplementary Financial Infor_7

Supplementary Financial Information (Schedule of Prepayment and Other Current Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Supplementary Financial Information [Abstract]
Insurance prepayments	$ 57	$ 9
Local franchise tax prepayments	108	78
Other	18	14
Prepayments and other current assets	$ 183	$ 101

Supplementary Financial Infor_8

Supplementary Financial Information (Summary of Investments and Other Property) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Supplementary Financial Information [Abstract]
Assets related to employee benefit plans	$ 151	$ 137
Non-utility property – land	19	19
Other	1	2
Total investments and other property	$ 171	$ 158

Supplementary Financial Infor_9

Supplementary Financial Information (Summarized Financial Information for Consolidated VIE) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 20	$ 19
REP Accounts receivable – net	1,150	944
Unamortized AR Facility costs	159	151
Assets	38,420	36,194
Liabilities	23,526	21,986
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	4
REP Accounts receivable – net	716	638
Income tax receivable	6	4
Unamortized AR Facility costs	(2)	2
Assets	724	$ 644
Long-term debt	140
Liabilities	$ 140

Supplementary Financial Info_10

Supplementary Financial Information (Schedule of Property, Plant and Equipment - Net) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Property Plant and Equipment [Line Items]
Total assets in service	$ 37,506	$ 35,963
Less accumulated depreciation	9,511	9,301
Net of accumulated depreciation	27,995	26,662
Construction work in progress	1,649	1,339
Held for future use	83	56
Property, plant and equipment - net	29,727	28,057
Distribution [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 19,792	18,865
Composite depreciation rate	2.70%
Avg. life	36 years 4 months 24 days
Transmission [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 15,640	15,001
Composite depreciation rate	2.40%
Avg. life	42 years
Other Assets [Member]
Property Plant and Equipment [Line Items]
Total assets in service	$ 2,074	$ 2,097
Composite depreciation rate	7.90%
Avg. life	12 years 8 months 12 days

Supplementary Financial Info_11

Supplementary Financial Information (Schedule of Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,894	$ 1,917
Accumulated Amortization	552	543
Net	1,342	1,374
Land Easements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	682	679
Accumulated Amortization	131	127
Net	551	552
Capitalized Software and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,212	1,238
Accumulated Amortization	421	416
Net	$ 791	$ 822

Supplementary Financial Info_12

Supplementary Financial Information (Schedule of Estimated Aggregate Amortization Expenses) (Details) $ in Millions	Jun. 30, 2024 USD ($)
Supplementary Financial Information [Abstract]
2024	$ 113
2025	113
2026	113
2027	113
2028	$ 113

Supplementary Financial Info_13

Supplementary Financial Information (Schedule of Operating Lease and Other Obligations) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Supplementary Financial Information [Abstract]
Operating lease liabilities	$ 116	$ 112
Investment tax credits	2	3
Customer advances for construction – noncurrent	125	105
Litigation claim obligations	84	6
Fair value of derivative liabilities	17
Other	78	79
Total operating lease and other obligations	$ 422	$ 305
Operating lease, not yet commenced, term	15 years
Operating lease, lease not yet commenced, amount	$ 64

Supplementary Financial Info_14

Supplementary Financial Information (Schedule of Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Supplementary Financial Information [Abstract]
Interest	$ 306	$ 245
Less capitalized interest	(19)	(13)
Total interest payments (net of amounts capitalized)	287	232
Federal	45	43
State	26	25
Total payments in lieu of income taxes	71	68
Construction expenditures financed through accounts payable	$ 344	$ 244

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Insider Trading Arrangements [Line Items]
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false