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Equity accounted investment - continuity (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of associates [line items] |  |  |
Net investment beginning | $ 2,863 |  |
Net income/(loss) from equity accounted investments | 164 | $ 291 | $ 188
Acqusitions and increase in paid in capital | 188 |  |
Dividends and other distributions | (273) |  |
Other comprehensive income / (loss) | (10) |  |
Divestments, derecognition and decrease in paid in capital | (1,444) |  |
Net investment ending | 1,487 | 2,863 |
Included in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | 1,441 |  |
Other long-term receivable in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | 46 |  |
Lundin Petroleum AB [Member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment beginning | 1,100 |  |
Net income/(loss) from equity accounted investments | 15 |  |
Acqusitions and increase in paid in capital | 0 |  |
Dividends and other distributions | (51) |  |
Other comprehensive income / (loss) | (13) |  |
Divestments, derecognition and decrease in paid in capital | (1,051) |  |
Net investment ending | 0 | 1,100 |
Lundin Petroleum AB [Member] | Included in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | 0 |  |
Lundin Petroleum AB [Member] | Other long-term receivable in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | 0 |  |
Other equity accounted investments [Member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment beginning | 1,763 |  |
Net income/(loss) from equity accounted investments | 149 |  |
Acqusitions and increase in paid in capital | 188 |  |
Dividends and other distributions | (223) |  |
Other comprehensive income / (loss) | 3 |  |
Divestments, derecognition and decrease in paid in capital | (393) |  |
Net investment ending | 1,487 | $ 1,763 |
Other equity accounted investments [Member] | Included in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | 1,441 |  |
Other equity accounted investments [Member] | Other long-term receivable in equity accounted investments [member] |  |  |
Disclosure of associates [line items] |  |  |
Net investment ending | $ 46 |  |

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