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Derivative Financial Instruments - Summary of Derivative Fair Value Balances (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | $ 632 | $ 1,179
Mark-to-market derivative assets (noncurrent) | 732 | 995
Mark-to-market derivative liabilities (current) | (502) | (632)
Mark-to-market derivative liabilities (noncurrent) | (341) | (419)
Variation margin | 606 | 1,712
Commodity Contract |  |
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | 623 | 1,160
Mark-to-market derivative assets (noncurrent) | 731 | 993
Total mark-to-market derivative assets | 1,354 | 2,153
Mark-to-market derivative liabilities (current) | (489) | (627)
Mark-to-market derivative liabilities (noncurrent) | (338) | (418)
Total mark-to-market derivative liabilities | (827) | (1,045)
Total mark-to-market derivative net assets (liabilities) | 527 | 1,108
Commodity Contract | Collateral |  |
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | 228 | 703
Mark-to-market derivative assets (noncurrent) | 193 | 330
Total mark-to-market derivative assets | 421 | 1,033
Mark-to-market derivative liabilities (current) | 258 | 922
Mark-to-market derivative liabilities (noncurrent) | 212 | 445
Total mark-to-market derivative liabilities | 470 | 1,367
Total mark-to-market derivative net assets (liabilities) | 891 | 2,400
Commodity Contract | Netting |  |
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | (5,120) | (7,472)
Mark-to-market derivative assets (noncurrent) | (3,373) | (2,682)
Total mark-to-market derivative assets | (8,493) | (10,154)
Mark-to-market derivative liabilities (current) | 5,120 | 7,472
Mark-to-market derivative liabilities (noncurrent) | 3,373 | 2,682
Total mark-to-market derivative liabilities | 8,493 | 10,154
Total mark-to-market derivative net assets (liabilities) | 0 | 0
Commodity Contract | Not Designated as Hedging Instrument, Economic Hedge |  |
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | 5,514 | 7,927
Mark-to-market derivative assets (noncurrent) | 3,911 | 3,345
Total mark-to-market derivative assets | 9,425 | 11,272
Mark-to-market derivative liabilities (current) | (5,866) | (9,019)
Mark-to-market derivative liabilities (noncurrent) | (3,923) | (3,545)
Total mark-to-market derivative liabilities | (9,789) | (12,564)
Total mark-to-market derivative net assets (liabilities) | (364) | (1,292)
Commodity Contract | Not Designated as Hedging Instrument, Propriety Trading |  |
Derivative [Line Items] |  |
Mark-to-market derivative assets (current) | 1 | 2
Mark-to-market derivative assets (noncurrent) | 0 | 0
Total mark-to-market derivative assets | 1 | 2
Mark-to-market derivative liabilities (current) | (1) | (2)
Mark-to-market derivative liabilities (noncurrent) | 0 | 0
Total mark-to-market derivative liabilities | (1) | (2)
Total mark-to-market derivative net assets (liabilities) | $ 0 | $ 0

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