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Financial instruments - additional disclosures (Details 12) $ in Millions, € in Billions, ¥ in Billions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 EUR (€) | Dec. 31, 2020 JPY (¥)
Disclosure of derivative financial instruments [line items] |  |  |  |
Transfers out of Level 3 of fair value hierarchy, assets | $ (166) | $ (64) |  |
Amount of change in OCI when pricing parameters for level 3 change more than 10% | 104 |  |  |
Amount of change in OCI when most significant parameters for level 3 change more than 10% | 260 |  |  |
Amount of change in OCI when POS for level 3 change more than 10% | 324 |  |  |
Fair value of other financial assets sold | 206 | 33 |  |
Long-term financial debt with a carrying amount | $ 2,300 | 2,100 | € 1.8 |
Maximum margin percentage impact of commodity price change | 10.00% |  |  |
Maximum holding in unrelated company | 5.00% |  |  |
Unrealized loss was recognized in other comprehensive income and accumulated in currency translation effects in relation with this net investment hedge | $ 201 |  |  |
Unrealized income was recognized in other comprehensive income and accumulated in currency translation effects in relation with this net investment hedge |  | 44 |  |
Net investment hedge recognized in the income statement | 0 |  |  |
Borrowings commercial paper maximum borrowing amount | $ 4,300 | 2,300 |  |
Borrowings commercial paper, number of programs | 3 |  | 3 | 3
Borrowings credit facility committed | $ 6,000 |  |  |
Borrowings credit facility short term |  | 7,000 |  |
Amount borrowed under the credit facility | $ 7,000 |  |  |
VAR estimate confidence interval | 95.00% |  | 95.00% | 95.00%
Net loss/gain recorded on equity securities and fund investments at fair value through the consolidated income statement | $ 92 | $ 427 |  |
US commercial paper programs [member] |  |  |  |
Disclosure of derivative financial instruments [line items] |  |  |  |
Borrowings commercial paper maximum borrowing amount | $ 9,000 |  |  |
Borrowings commercial paper, number of programs | 2 |  | 2 | 2
JP commercial paper programs [member] |  |  |  |
Disclosure of derivative financial instruments [line items] |  |  |  |
Borrowings commercial paper maximum borrowing amount | $ 1,500 |  |  | ¥ 150
Borrowings commercial paper, number of programs | 1 |  | 1 | 1
Largest financial institution [member] |  |  |  |
Counterparty risk [abstract] |  |  |  |
Percentage of entity's cash and cash equivalents held with financial institution | 14.10% | 12.60% |  |
Second largest financial institution [member] |  |  |  |
Counterparty risk [abstract] |  |  |  |
Percentage of entity's cash and cash equivalents held with financial institution | 12.60% | 10.40% |  |
Third largest financial institution [member] |  |  |  |
Counterparty risk [abstract] |  |  |  |
Percentage of entity's cash and cash equivalents held with financial institution | 9.70% | 8.30% |  |

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