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Acquisition of Noble Energy, Inc. (Details) - USD ($) shares in Millions, $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 05, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |
Carrying amount of long-term debt |  | $ 25,676 |
Noble |  |  |
Business Acquisition [Line Items] |  |  |
Consideration transferred | $ 4,109 |  |
Number of shares (in shares) | 58 |  |
Carrying amount of long-term debt | $ 9,231 |  |
Provisional measurement of assets acquired and liabilities assumed |  |  |
Current assets | 1,105 |  |
Investments and long-term receivables | 1,282 |  |
Properties (includes $14,935 for oil and gas properties) | 16,703 |  |
Other assets | 607 |  |
Total assets acquired | 19,697 |  |
Current liabilities | 1,829 |  |
Long-term debt and finance leases | 9,231 |  |
Deferred income taxes | 2,355 |  |
Other liabilities | 1,394 |  |
Total liabilities assumed | 14,809 |  |
Noncontrolling interest and redeemable noncontrolling interest | 779 |  |
Net assets acquired | 4,109 |  |
Oil and gas property | $ 14,935 |  |
Unaudited pro forma summary |  |  |
Sales and other operating revenues |  | 96,980 | $ 144,303
Net income |  | $ (9,890) | $ 1,412

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