CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
||||||
|---|---|---|---|---|---|---|---|---|
| CURRENT ASSETS: | ||||||||
| Cash and cash equivalents | $ 6 | $ 8 | ||||||
| Receivables- | ||||||||
| Notes receivable from affiliated companies | 188 | 268 | ||||||
| Prepaid taxes and other | 20 | 42 | ||||||
| Assets, Current, Total | 304 | 414 | ||||||
| PROPERTY, PLANT AND EQUIPMENT: | ||||||||
| In service | 14,132 | 14,069 | ||||||
| Less — Accumulated provision for depreciation | 2,848 | 2,804 | ||||||
| Property, plant and equipment in service net of accumulated provision for depreciation | 11,284 | 11,265 | ||||||
| Construction work in progress | 1,481 | 1,204 | ||||||
| Total property, plant and equipment | 12,765 | 12,469 | ||||||
| INVESTMENTS AND OTHER NONCURRENT ASSETS: | ||||||||
| Goodwill | 224 | 224 | ||||||
| Investments | 19 | 19 | ||||||
| Property taxes | 231 | 313 | ||||||
| Operating lease right-of-use asset | [1] | 411 | 412 | |||||
| Other | 29 | 38 | ||||||
| Total investments and other noncurrent assets | 914 | 1,006 | ||||||
| TOTAL ASSETS | [2] | 13,983 | 13,889 | |||||
| CURRENT LIABILITIES: | ||||||||
| Currently payable long-term debt | 75 | 75 | ||||||
| Accounts payable - Affiliated companies | 187 | 119 | ||||||
| Accrued taxes | 331 | 335 | ||||||
| Accrued interest | 82 | 101 | ||||||
| Other | 12 | 15 | ||||||
| Liabilities, Current, Total | 1,008 | 891 | ||||||
| NONCURRENT LIABILITIES: | ||||||||
| Long-term debt and other long-term obligations | 6,631 | 6,629 | ||||||
| Accumulated deferred income taxes | 1,591 | 1,540 | ||||||
| Property taxes | 159 | 321 | ||||||
| Regulatory liabilities | 471 | 476 | ||||||
| Noncurrent operating lease obligation | [3] | 405 | 405 | |||||
| Other | 8 | 9 | ||||||
| Liabilities, Noncurrent, Total | 9,265 | 9,380 | ||||||
| TOTAL LIABILITIES | [2] | 10,273 | 10,271 | |||||
| MEMBERS' EQUITY: | ||||||||
| Members' equity | 2,250 | 2,250 | ||||||
| Retained earnings | 661 | 588 | ||||||
| Total members' equity | 2,911 | 2,838 | ||||||
| Noncontrolling interest | 799 | 780 | ||||||
| TOTAL EQUITY | 3,710 | 3,618 | ||||||
| COMMITMENTS, GUARANTEES AND CONTINGENCIES (NOTE 7.) | ||||||||
| TOTAL LIABILITIES AND EQUITY | 13,983 | 13,889 | ||||||
| Affiliates | ||||||||
| Receivables- | ||||||||
| Affiliated companies | 1 | 5 | ||||||
| CURRENT LIABILITIES: | ||||||||
| Short-term borrowings- | 1 | 1 | ||||||
| Non-affiliates | ||||||||
| Receivables- | ||||||||
| Affiliated companies | 89 | 91 | ||||||
| CURRENT LIABILITIES: | ||||||||
| Short-term borrowings- | $ 320 | $ 245 | ||||||
| ||||||||
| X | ||||||||||
- Definition Deferred Charges And Other Assets Abstract. No definition available.
|
| X | ||||||||||
- Definition Deferred Charges And Other Assets, Noncurrent No definition available.
|
| X | ||||||||||
- Definition Amount, net of accumulated depreciation of long-lived physical assets, excluding construction in progress, used in the normal conduct of business and not intended for resale. No definition available.
|
| X | ||||||||||
- Definition Property Taxes Payable, Noncurrent No definition available.
|
| X | ||||||||||
- Definition Property Taxes, NonCurrent Assets No definition available.
|
| X | ||||||||||
- Definition Public Utilities, Property, Plant and Equipment, Accumulated Depreciation, Excluding Construction Work in Progress No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of asset recognized for present right to economic benefit, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of accrued interest on financing receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of obligation due after one year or beyond the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of ownership interest in a limited liability company (LLC), including portions attributable to both the parent and noncontrolling interests. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of long-term debt and lease obligation, classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of long-term debt and lease obligation, classified as current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of member capital in limited liability company (LLC). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of ownership interest in limited liability company (LLC), attributable to the parent entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of ownership interest in limited liability company (LLC) directly or indirectly attributable to noncontrolling interests. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of current assets classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Period end amount of construction work in progress in public utility. No definition available.
|
| X | ||||||||||
- Definition Period end amount of total net PPE. No definition available.
|
| X | ||||||||||
- Definition Period end amount of total gross PPE. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|