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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Liabilities |  |
Derivate asset, subject to master netting arrangement, collateral, obligation to return security not offset | $ 4 | $ 13
Commodity derivative instruments |  |
Assets |  |
Derivative assets | 20 | 31
Contract netting | (10) | (6)
Collateral netting | 0 | 0
Net value | 10 | 25
Liabilities |  |
Derivative liabilities | 19 | 6
Contract netting | (10) | (6)
Collateral netting | 0 | 0
Net value | 9 | 0
Commodity derivative instruments | Level 1 |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
Commodity derivative instruments | Level 2 |  |
Assets |  |
Derivative assets | 20 | 31
Liabilities |  |
Derivative liabilities | 19 | 6
Commodity derivative instruments | Level 3 |  |
Assets |  |
Derivative assets | 0 | 0
Liabilities |  |
Derivative liabilities | 0 | 0
RFS |  |
Liabilities |  |
Derivative liabilities | 294 | 329
Contract netting | 0 | 0
Collateral netting | 0 | 0
Net value | 294 | 329
RFS | Level 1 |  |
Liabilities |  |
Derivative liabilities | 0 | 0
RFS | Level 2 |  |
Liabilities |  |
Derivative liabilities | 294 | 329
RFS | Level 3 |  |
Liabilities |  |
Derivative liabilities | $ 0 | $ 0

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