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Fair Value Measurement - Schedule of Fair Value Hierarchy for Gross Financial Assets and Liabilities (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Commodity derivatives | $ 1,218 | $ 2,037
Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in debt securities | 1,268 | 1,222
Commodity derivatives | 1,218 | 2,037
Total assets | 2,486 | 3,259
Commodity derivatives | 1,167 | 2,010
Total liabilities | 1,167 | 2,010
Fair Value, Measurements, Recurring | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in debt securities | 195 | 178
Commodity derivatives | 640 | 958
Total assets | 835 | 1,136
Commodity derivatives | 663 | 906
Total liabilities | 663 | 906
Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in debt securities | 1,073 | 1,044
Commodity derivatives | 464 | 951
Total assets | 1,537 | 1,995
Commodity derivatives | 485 | 843
Total liabilities | 485 | 843
Fair Value, Measurements, Recurring | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments in debt securities | 0 | 0
Commodity derivatives | 114 | 128
Total assets | 114 | 128
Commodity derivatives | 19 | 261
Total liabilities | $ 19 | $ 261

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