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Derivatives and Risk Management Activities - Fair Value (Details) - Recurring Fair Value Measures - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | $ (7) | $ 24
Level 1 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 12 | 11
Level 2 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | (19) | 13
Commodity derivatives |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 9 | (3)
Commodity derivatives | Level 1 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 12 | 11
Commodity derivatives | Level 2 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | (3) | (14)
Interest rate derivatives |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 33 | 27
Interest rate derivatives | Level 2 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 33 | 27
Foreign currency derivatives |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | (49) | 0
Foreign currency derivatives | Level 1 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | 0 | 0
Foreign currency derivatives | Level 2 |  |
Recurring Fair Value Measurements |  |
Total net derivative asset/(liability) | $ (49) | $ 0

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