Balance Sheet Components - Other Property and Investments-Net and Other Non-current Assets (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Balance Sheet Related Disclosures [Abstract] | ||
| Equity investments | $ 176 | $ 148 |
| Operating lease ROU assets | $ 63 | $ 64 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total | Total |
| Finance lease ROU assets | $ 26 | $ 29 |
| Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total | Total |
| Non-utility property | $ 10 | $ 12 |
| Notes receivable | 10 | 12 |
| Long-term prepaid license fees | 12 | 18 |
| Pension asset | 67 | 61 |
| Investment in affiliated trust | 12 | 12 |
| Deferred compensation assets | 9 | 9 |
| Other | 8 | 23 |
| Total | $ 393 | $ 388 |
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- Definition Long-term Prepaid License Fees No definition available.
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- Definition Non regulated property. No definition available.
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- References No definition available.
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of financial position that includes finance lease right-of-use asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investments, and noncurrent assets classified as other. No definition available.
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- Definition Amount of investment in equity method investee and investment in and advance to affiliate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after allowance for credit loss, of financing receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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