Risk Management and Hedging Activities - NPC - Balance Sheet Location (Details) - NPC - Commodity derivatives - Not Designated as Hedging - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Derivatives, Fair Value [Line Items] | ||
| Commodity liabilities | $ (51) | $ (41) |
| Net regulatory asset (liability) on derivative contracts | 51 | 41 |
| Derivative contracts - current liabilities | ||
| Derivatives, Fair Value [Line Items] | ||
| Commodity liabilities | (30) | (27) |
| Other noncurrent liabilities | ||
| Derivatives, Fair Value [Line Items] | ||
| Commodity liabilities | $ (21) | $ (14) |
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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 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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