The change in equity resulting from the issuing of convertible instruments.

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The nominal value of capital arising from issuing preference shares. [Refer: Issued capital]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Number Of Debentures Held

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No definition available.

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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
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Condensed financial information of the parent company - Additional information (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2023 EUR (€)
Condensed Financial Statements, Captions [Line Items]
Issue of contingent convertible capital securities	$ 982	$ 864	$ 750
Parent company
Condensed Financial Statements, Captions [Line Items]
Number of debentures held \| €				€ 10	€ 0
Perpetual additional tier 1 contingent capital securities
Condensed Financial Statements, Captions [Line Items]
Issued capital	$ 8,750	$ 7,750	$ 6,750