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Provisions and other liabilities (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($)
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | $ 22,568 | [1]
Current portion, reported as trade, other payables and provisions, beginning | 2,649 |
Provisions and other liabilities at the beginning period | 25,216 |
New or increased provisions and other liabilities | 984 |
Change in estimates | (1,296) |
Amounts charged against provisions and other liabilities | (1,519) |
Effects of change in the discount rate | (1,623) |
Reduction due to divestments | (359) |
Accretion expenses | 452 |
Reclassification and transfer | 224 |
Currency translation | (476) |
Provisions and other liabilities at ending period | 21,603 |
Non-current portion - ending period | 19,899 | [1]
Current portion, reported as trade, other payables and provisions, ending | 1,704 |
Before restatement [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 19,731 |
Impact of ARO policy change [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 2,837 |
Non-current portion - ending period | 1,751 |
Asset retirement obligations [Member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 20,037 |
Current portion, reported as trade, other payables and provisions, beginning | 92 |
Provisions and other liabilities at the beginning period | 20,128 |
New or increased provisions and other liabilities | 602 |
Change in estimates | (1,097) |
Amounts charged against provisions and other liabilities | (125) |
Effects of change in the discount rate | (1,610) |
Reduction due to divestments | (359) |
Accretion expenses | 423 |
Reclassification and transfer | (74) |
Currency translation | (471) |
Provisions and other liabilities at ending period | 17,417 |
Non-current portion - ending period | 17,279 |
Current portion, reported as trade, other payables and provisions, ending | 138 |
Asset retirement obligations [Member] | Before restatement [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 17,200 |
Asset retirement obligations [Member] | Impact of ARO policy change [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 2,837 |
Claims and litigations [Member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 96 |
Current portion, reported as trade, other payables and provisions, beginning | 958 |
Provisions and other liabilities at the beginning period | 1,053 |
New or increased provisions and other liabilities | 30 |
Change in estimates | (58) |
Amounts charged against provisions and other liabilities | (870) |
Reclassification and transfer | 0 |
Currency translation | 0 |
Provisions and other liabilities at ending period | 155 |
Non-current portion - ending period | 81 |
Current portion, reported as trade, other payables and provisions, ending | 73 |
Claims and litigations [Member] | Before restatement [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 96 |
Claims and litigations [Member] | Impact of ARO policy change [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 0 |
Other provisions [Member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 2,436 |
Current portion, reported as trade, other payables and provisions, beginning | 1,600 |
Provisions and other liabilities at the beginning period | 4,035 |
New or increased provisions and other liabilities | 352 |
Change in estimates | (141) |
Amounts charged against provisions and other liabilities | (524) |
Effects of change in the discount rate | (13) |
Accretion expenses | 29 |
Reclassification and transfer | 298 |
Currency translation | (5) |
Provisions and other liabilities at ending period | 4,031 |
Non-current portion - ending period | 2,539 |
Current portion, reported as trade, other payables and provisions, ending | 1,493 |
Other provisions [Member] | Before restatement [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | 2,436 |
Other provisions [Member] | Impact of ARO policy change [member] |  |
Disclosure of other provisions and other liabilities [line items] |  |
Non-current portion - beginning period | $ 0 |
[1] | 1) Restated 1 January 2020 and 31 December 2020 figures due to a policy change affecting ARO, see note 2 Significant accounting policies and note 21 Provisions and other liabilities.

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- Definition The increase (decrease) in other provisions resulting from divestitures. + References No definition available. + Details
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- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_e&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84_e&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2021-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2021-en-r&anchor=para_84&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_d&doctype=Standard -URIDate 2021-03-24 + Details
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