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v3.20.2

Asset Acquisitions and Dispositions - Assets Sold - Textual (Details) - Operating Segments [Member] | 1 Months Ended | 5 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 31, 2020 USD ($) | Mar. 31, 2020 USD ($) | Feb. 29, 2020 USD ($) | May 27, 2020 USD ($) MBoe | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2019 MBoe
Australia West Assets [Member] | Asia Pacific [Member] |  |  |  |  |  |  |
Assets Sold |  |  |  |  |  |  |
Proceeds from asset dispositions | $ 765,000,000 |  |  |  |  |  |
Before-tax gain (loss) on disposition |  |  |  |  | $ (587,000,000) |  |
Disposition, Net carrying value |  |  |  | $ 200,000,000 |  |  |
Disposition, Cash |  |  |  | 500,000,000 |  |  |
Disposition, PP&E |  |  |  | 1,300,000,000 |  |  |
Disposition, Other current assets |  |  |  | 100,000,000 |  |  |
Asset Retirement Obligation of held for sale or sold |  |  |  | 700,000,000 |  |  |
Disposition, deferred tax liabilities |  |  |  | 300,000,000 |  |  |
Disposition, other liabilities |  |  |  | $ 200,000,000 |  |  |
Disposition, Before-tax earnings |  |  |  |  | $ (851,000,000) | $ (222,000,000) |
Segment which includes disposition |  |  |  |  | Asia Pacific |  |
Barossa project [Member] | Asia Pacific [Member] |  |  |  |  |  |  |
Assets Sold |  |  |  |  |  |  |
Production | MBoe |  |  |  | 43 |  |  |
Barossa project [Member] | Asia Pacific [Member] | Scenario Plan [Member] |  |  |  |  |  |  |
Assets Sold |  |  |  |  |  |  |
Proceeds from asset dispositions | $ 200,000,000 |  |  |  |  |  |
Waddell Ranch [Member] | Lower 48 Segment |  |  |  |  |  |  |
Assets Sold |  |  |  |  |  |  |
Proceeds from asset dispositions |  |  | $ 184,000,000 |  |  |  |
Before-tax gain (loss) on disposition |  |  | $ 0 |  |  |  |
Production | MBoe |  |  |  |  |  |  | 15
Segment which includes disposition |  |  |  |  | Lower 48 |  |
Niobrara [Member] | Lower 48 Segment |  |  |  |  |  |  |
Assets Sold |  |  |  |  |  |  |
Proceeds from asset dispositions |  | $ 359,000,000 |  |  |  |  |
Before-tax gain (loss) on disposition |  | 38,000,000 |  |  |  |  |
Disposition, Net carrying value |  | 397,000,000 |  |  |  |  |
Disposition, PP&E |  | 433,000,000 |  |  |  |  |
Asset Retirement Obligation of held for sale or sold |  | $ 34,000,000 |  |  |  |  |
Disposition, Before-tax earnings |  |  |  |  | $ 22,000,000 | $ 7,000,000 |
Production | MBoe |  |  |  |  |  |  | 15
Segment which includes disposition |  |  |  |  | Lower 48 |  |

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