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Equity - Share capital and premium additional information (Details) shares in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2024 € / shares
Disclosure of classes of share capital [line items] |  |  |  |
Condition of conversion (percent) | 0.0700 |  |  |
Issue of contingent convertible capital securities | $ | $ 982 | $ 864 | $ 750 |
Authorised share capital, ordinary shares (in shares) | 9,142,000 | 9,142,000 | 9,142,000 |
Issued share capital, ordinary shares (in shares) | 3,147,391 | 3,498,194 | 3,726,539 |
Treasury shares |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued share capital, ordinary shares (in shares) | 51,100 | 154,600 | 107,400 |
Perpetual additional tier 1 contingent capital securities |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Issued capital | $ | $ 8,750 | $ 7,750 | $ 6,750 |
Ordinary shares |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Par value (in EUR per share) | € / shares |  |  |  | € 0.01

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