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Leases - Information related to Right of use assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | $ 4,011 | $ 4,372
Additions including remeasurements and cancellations | 1,326 | 855
Depreciation and impairment | (1,257) | (1,174)
Currency and other | 40 | (42)
Right of use Assets | 4,119 | 4,011
Drilling Rigs [Member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | 951 | 1,212
Additions including remeasurements and cancellations | 380 | 160
Depreciation and impairment | (349) | (398)
Currency and other | 23 | (23)
Right of use Assets | 1,004 | 951
Vessels [Member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | 1,320 | 1,302
Additions including remeasurements and cancellations | 853 | 439
Depreciation and impairment | (571) | (413)
Currency and other | 4 | (8)
Right of use Assets | 1,606 | 1,320
Land and buildings [member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | 1,365 | 1,537
Additions including remeasurements and cancellations | 18 | 59
Depreciation and impairment | (179) | (225)
Currency and other | 11 | (6)
Right of use Assets | 1,215 | 1,365
Storage facilities [Member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | 156 | 72
Additions including remeasurements and cancellations | 45 | 141
Depreciation and impairment | (68) | (57)
Currency and other | 0 | 0
Right of use Assets | 133 | 156
Other [Member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Right of use Assets | 219 | 249
Additions including remeasurements and cancellations | 30 | 56
Depreciation and impairment | (90) | (81)
Currency and other | 2 | (5)
Right of use Assets | 161 | 219
Assets under development [Member] |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |
Depreciation and impairment | $ (359) | $ (375)

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- Definition Additions, remeasurements and cancellations to right of use assets. + References No definition available. + Details
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Namespace Prefix: | eqnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of exchange differences recognized on translation and other of right of use assets. + References No definition available. + Details
Name: | eqnr_GainsLossesOnExchangeDifferencesOnTranslationAndOtherRecognisedRightOfUseAssets
Namespace Prefix: | eqnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_a&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Balance Type: | na
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_j&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |