Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Income Statement [Abstract] | ||
| Operating revenues | $ 1,142 | $ 1,011 |
| Operating expenses: | ||
| Operation and maintenance | 468 | 416 |
| Depreciation and amortization | 216 | 188 |
| General taxes | 87 | 81 |
| Total operating expenses, net | 771 | 685 |
| Operating income | 371 | 326 |
| Other (expense) income: | ||
| Interest expense | (144) | (124) |
| Interest income | 22 | 24 |
| Non-operating benefit costs, net | 4 | 9 |
| Other, net | 17 | 7 |
| Total other (expense) income | (101) | (84) |
| Income before income taxes | 270 | 242 |
| Provision for income taxes | 65 | 57 |
| Net income attributable to common shareholders | $ 205 | $ 185 |
| Basic earnings per share: | ||
| Net income attributable to common shareholders (dollars per share) | $ 1.05 | $ 0.95 |
| Diluted earnings per share: | ||
| Net income attributable to common shareholders (dollars per share) | $ 1.05 | $ 0.95 |
| Weighted-average common shares outstanding: | ||
| Basic (in shares) | 195 | 195 |
| Diluted (in shares) | 195 | 195 |
| X | ||||||||||
- Definition Benefit Costs, Non-Operating, Net No definition available.
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- Definition Interest Income, Nonoperating No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The total amount of operating revenues recognized during the period. No definition available.
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| X | ||||||||||
- Definition Amount of operating expense for depreciation and amortization of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of operating expense for taxes other than income taxes of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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