Risk Management and Hedging Activities - SPPC - Balance Sheet Location (Details) - SPPC - Commodity derivatives - Not Designated as Hedging - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, gross | $ 1 | |
| Commodity derivatives | $ (14) | (12) |
| Total derivative asset (liability) | (11) | |
| Net regulatory asset (liability) on derivative contracts | 14 | 11 |
| Balance Sheet Location [Axis]: us-gaap:LiabilitiesCurrent | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, gross | 0 | |
| Commodity derivatives | (9) | (8) |
| Total derivative asset (liability) | (8) | |
| Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, gross | 1 | |
| Commodity derivatives | 0 | 0 |
| Total derivative asset (liability) | 1 | |
| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent | ||
| Derivatives, Fair Value [Line Items] | ||
| Derivative asset, gross | 0 | |
| Commodity derivatives | $ (5) | (4) |
| Total derivative asset (liability) | $ (4) |
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- Definition The net amount of regulatory assets and liabilities as of the balance sheet date representing the net effective portion of unrealized losses and gains on derivatives not designated as hedging instruments and used for domestic regulated operations. Unrealized losses and gains on derivatives used for domestic regulated operations are generally recorded as regulatory assets or liabilities due to the realized losses and gains on such derivatives being included in regulated rates. No definition available.
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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