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v3.25.3

Hedging Activities and Fair Value Measurements - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
May 31, 2025 USD ($) derivativeInstrument | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Derivative [Line Items] |  |  |  |  |  |
Cash proceeds from hedge |  |  |  | $ 14 | $ (33) |
Carrying amount of hedged asset |  | $ 4 |  | 4 |  | $ 11
Carrying Value |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Fixed rate debt principal amount fair value |  | 32,500 |  | 32,500 |  | 31,600
Significant Other Observable Inputs (Level 2) | Fair Value |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Fixed rate debt principal amount fair value |  | 30,600 |  | 30,600 |  | $ 28,900
Derivatives not designated as hedging instruments: |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Gain (loss) recognized in income on derivative |  | (22) | $ (17) | $ 26 | $ (10) |
Treasury lock | Cash flow hedge | Derivatives designated as hedging instruments: |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Number of transactions | derivativeInstrument | 4 |  |  |  |  |
Derivative, fixed interest rate | 3.98% |  |  |  |  |
Derivative, notional amount | $ 750 |  |  |  |  |
Cash proceeds from hedge | $ 14 |  |  |  |  |
Derivative, gains, amortization period |  |  |  | 7 years |  |
Interest Rate Derivative Instruments | Cash flow hedge |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Accumulated other comprehensive income related to interest rate derivative instruments expected to be reclassified to earnings in interest expense over the next twelve months |  | 8 |  | $ 8 |  |
Commodity Derivative Instruments | Derivatives not designated as hedging instruments: |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Realized gain (loss) on commodity contracts |  |  |  | 46 |  |
Unrealized gain (loss) on commodity contracts |  |  |  | (20) |  |
Commodity Derivative Instruments | Cash flow hedge |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Net accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to earnings over the next twelve months |  | 102 |  | 102 |  |
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to revenue over the next twelve months |  | 111 |  | 111 |  |
Accumulated other comprehensive income (loss) related to commodity derivative instruments expected to be reclassified to operating costs and expenses over the next twelve months |  | (9) |  | (9) |  |
Commodity Derivative Before CME Rule 814 | Fair Value, Recurring |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Price risk derivatives, at fair value, net |  | $ 96 |  | $ 96 |  |

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. This item represents the fair value of the principal balance of our fixed rate debt as of the balance sheet date. + References No definition available. + Details
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