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v3.25.3

Commodity Derivatives - Financial Statement Presentation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Derivative assets |  | Derivative assets |  | Derivative assets
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] | Derivative Liability, Current |  | Derivative Liability, Current |  | Derivative Liability, Current
Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Liability | $ (334) |  | $ (334) |  | $ (382)
Derivative Liability, Fair Value, Gross Asset | 545 |  | 545 |  | 670
Derivative Asset | 231 |  | 231 |  | 344
Derivative Liability | (308) |  | (308) |  | (400)
Gain (Loss) on Derivative Instruments, Net, Pretax | 58 | $ 4 | 32 | $ (143) |
Energy Related Derivative | Gain (Loss) on Derivative Instruments |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | 56 | 5 | 30 | (133) |
Energy Related Derivative | Cost of Sales |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | 2 | (1) | 2 | (10) |
Not Designated as Hedging Instrument [Member] | Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 565 |  | 565 |  | 726
Derivative Liability, Fair Value, Gross Liability | (853) |  | (853) |  | (1,070)
Not Designated as Hedging Instrument [Member] | Energy Related Derivative | Gain (Loss) on Derivative Instruments |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Realized | 7 | (7) | (21) | 74 |
Unrealized | 49 | 12 | 51 | (207) |
Not Designated as Hedging Instrument [Member] | Energy Related Derivative | Cost of Sales |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Realized | 0 | (2) | (2) | (7) |
Unrealized | 2 | $ 1 | 4 | $ (3) |
Derivative assets [Member] | Not Designated as Hedging Instrument [Member] | Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 384 |  | 384 |  | 508
Regulatory assets, deferred charges, and other [Member] | Not Designated as Hedging Instrument [Member] | Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 181 |  | 181 |  | 218
Derivative Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | (480) |  | (480) |  | (635)
Regulatory liabilities, deferred income, and other [Member] | Not Designated as Hedging Instrument [Member] | Energy Related Derivative |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | $ (373) |  | $ (373) |  | $ (435)

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