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Fair Value Measurement - Schedule of Net Fair Value of Financial Instruments (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Carrying Amount |  |
Financial Assets [Abstract] |  |
Investments in debt securities | $ 1,268 | $ 1,222
Financial Liabilities [Abstract] |  |
Total debt, excluding finance leases | 15,316 | 15,323
Carrying Amount | Commodity Contract |  |
Financial Assets [Abstract] |  |
Commodity derivatives | 492 | 824
Financial Liabilities [Abstract] |  |
Commodity derivatives | 406 | 782
Estimate of Fair Value Measurement |  |
Financial Assets [Abstract] |  |
Investments in debt securities | 1,268 | 1,222
Financial Liabilities [Abstract] |  |
Total debt, excluding finance leases | 15,914 | 15,545
Estimate of Fair Value Measurement | Commodity Contract |  |
Financial Assets [Abstract] |  |
Commodity derivatives | 492 | 824
Financial Liabilities [Abstract] |  |
Commodity derivatives | $ 406 | $ 782

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