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Derivative and Financial Instruments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jan. 15, 2021
Derivative [Line Items] |  |  |  |
Percentage of term loans converted | 60.00% |  |  |
Debt securities, available-for-sale, unrealized loss | $ 5 | $ 12 |  |
Proceeds from sales and redemptions of investments in debt securities classified as available for sale | 983 | 644 |  |
Collateral was posted for derivative instruments in a liability position | 0 | 42 |  |
In Event of Lowered Credit Rating |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, liability position, aggregate fair value | 181 | $ 333 |  |
In Event of Downgrade Below Investment Grade |  |  |  |
Derivative [Line Items] |  |  |  |
Additional collateral, either in the form of cash or letters of credit | $ 152 |  |  |
Maximum | Trade Receivables |  |  |  |
Derivative [Line Items] |  |  |  |
Terms of financial instruments and trade receivables | 30 days |  |  |
Interest Rate Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Unrealized gain (loss) on hedging activities | $ 78 |  |  |
Concho Resources Incorporated | Commodity |  |  |  |
Derivative [Line Items] |  |  |  |
Business combination, derivative liabilities assumed |  |  |  | $ 456
Gains (losses) from commodity derivatives |  |  | $ (305) |
Cash payment |  |  | $ 761 |

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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