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v3.20.2

Lawsuits, Claims, Commitments and Contingencies (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Lawsuits, commitments and contingencies |  |  |  |  |  |
Tentative cash tax refund | $ 223 |  | $ 5 |  |  |
Anticipated cash refund | $ 195 | $ 195 |  |  |  |
Anadarko |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |
Tentative cash tax refund |  | $ 881 |  |  | $ 881 |
Arbitration filed by Andes Petroleum Ecuador Ltd |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |
Proceeds from settlement |  |  |  |  | $ 1,000 |
Recovery of amount awarded in settlement amount (as a percent) |  |  |  |  | 60.00% |
Percentage of judgment amount claimed |  |  |  | 40.00% |  |
Own economic interest (as a percent) |  |  |  | 60.00% |  |
Tronox Settlement |  |  |  |  |  |
Lawsuits, commitments and contingencies |  |  |  |  |  |
Payments for settlement |  |  |  |  |  | $ 5,200

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