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Condensed financial information of the parent company - Additional information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) debenture | Dec. 31, 2022 USD ($) debenture
Condensed Financial Statements, Captions [Line Items] |  |
Issue of contingent convertible capital securities | $ 864 | $ 750
Parent company |  |
Condensed Financial Statements, Captions [Line Items] |  |
Number of debentures held | debenture | 0 | 0
Perpetual additional tier 1 contingent capital securities |  |
Condensed Financial Statements, Captions [Line Items] |  |
Issued capital | $ 7,750 | $ 6,750

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- Definition The change in equity resulting from the issuing of convertible instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The nominal value of capital arising from issuing preference shares. [Refer: Issued capital] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 04 -Paragraph a -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 5 -Subsection 04 -Paragraph c -Subparagraph Schedule I -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 7 -Subsection 05 -Paragraph c -Subparagraph Schedule II -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 9 -Subsection 06 -Publisher SEC + Details
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- Details
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