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Leases - Non-current debt maturity profile (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Lease liabilities [abstract] |  |  |  |  |
Total repayment of non-current lease liability | $ 2,449 | [1] | $ 3,220 | [1] | $ 3,191
Year 2 and 3 [member] |  |  |  |  |
Lease liabilities [abstract] |  |  |  |  |
Total repayment of non-current lease liability | 1,164 |  | 1,513 |  |
Year 4 and 5 [member] |  |  |  |  |
Lease liabilities [abstract] |  |  |  |  |
Total repayment of non-current lease liability | 586 |  | 748 |  |
After 5 years [member] |  |  |  |  |
Lease liabilities [abstract] |  |  |  |  |
Total repayment of non-current lease liability | $ 699 |  | $ 959 |  |
[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 amount of non-current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
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