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Financial risk and capital management - Credit risk exposure and grading (Details) - USD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of internal credit grades [line items] |  |
Description of internal credit ratings process | Prior to entering into transactions with new counterparties, Equinor’s credit policy requires all counterparties to be formally identified and assigned internal credit ratings. The internal credit ratings reflect Equinor’s assessment of the counterparties' credit risk and are based on a quantitative and qualitative analysis of recent financial statements and other relevant business. All counterparties are re-assessed regularly. |
Non-current financial receivable [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | $ 708 | $ 497
Trade and other receivables [member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 17,191 | 7,418
Non-current derivative financial instruments [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 1,265 | 2,476
Current derivative financial instrument [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 5,131 | 886
Investment grade, rated A or above [Member] | Non-current financial receivable [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 452 | 211
Investment grade, rated A or above [Member] | Trade and other receivables [member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 3,637 | 1,954
Investment grade, rated A or above [Member] | Non-current derivative financial instruments [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 1,103 | 1,850
Investment grade, rated A or above [Member] | Current derivative financial instrument [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 2,902 | 465
Other investment grade [Member] | Non-current financial receivable [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 18 | 24
Other investment grade [Member] | Trade and other receivables [member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 8,930 | 2,288
Other investment grade [Member] | Non-current derivative financial instruments [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 0 | 478
Other investment grade [Member] | Current derivative financial instrument [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 1,524 | 287
Non-investment grade or not rated [Member] | Non-current financial receivable [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 238 | 262
Non-investment grade or not rated [Member] | Trade and other receivables [member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 4,624 | 3,176
Non-investment grade or not rated [Member] | Non-current derivative financial instruments [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | 162 | 148
Non-investment grade or not rated [Member] | Current derivative financial instrument [Member] |  |
Disclosure of internal credit grades [line items] |  |
Financial assets subject to credit exposure | $ 705 | $ 134

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- Definition The amount of exposure to loss resulting from credit risk. [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph IG24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_IG24_a&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph IG25 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_IG25_b&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 36 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_c&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition The description of the entity's process for internal credit ratings. [Refer: Internal credit grades [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph IG25 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_IG25_a&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 36 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_c&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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