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Derivative Financial Instruments (Derivatives Income Statement Location) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net income | Net income | Net income
Derivative, Gain (Loss) on Derivative, Net | $ 7 | $ (9) | $ (4)
Purchased product costs |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Realized Gain (Loss), Net | (10) | (13) | (11)
Unrealized Gain (Loss) on Derivatives and Commodity Contracts | $ 17 | $ 3 | $ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of revenues (excludes items below) | Cost of revenues (excludes items below) | Cost of revenues (excludes items below)
Derivative, Gain (Loss) on Derivative, Net | $ 7 | $ (10) | $ (11)
Product sales |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Realized Gain (Loss), Net | $ 0 | $ 1 | $ 7
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Revenue from Contract with Customer, Excluding Assessed Tax, Third parties | Revenue from Contract with Customer, Excluding Assessed Tax, Third parties | Revenue from Contract with Customer, Excluding Assessed Tax, Third parties
Derivative, Gain (Loss) on Derivative, Net | $ 0 | $ 1 | $ 7

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- Definition Amount of realized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 10 -SubTopic 10 -Topic 825 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-10 + Details
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- Definition Line items represent financial concepts included in a table. 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