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v3.25.4

Issued capital and reserves - Additional Information (Details) |  |  |  | 1 Months Ended | 12 Months Ended |
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Sep. 10, 2025 USD ($) $ / shares shares | Sep. 09, 2025 $ / shares shares | Mar. 06, 2025 USD ($) $ / shares shares | Nov. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) | Jan. 31, 2025 shares | Dec. 31, 2025 USD ($) shares vote $ / shares | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) | Jun. 30, 2025 USD ($)
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum aggregate nominal share capital authorized |  |  |  |  |  |  |  |  |  |  |  | $ 367,502.51
Stockholders' equity, stock split, conversion ratio |  |  |  | 8.3333% |  |  |  |  |  |  |  |
Share issue related cost |  | $ 8,500,000 |  |  |  |  |  | $ 8,500,000 |  | $ 0 | $ 0 |
Capital reduction | [1] |  |  |  |  |  |  | $ 1,000,000 |  |  |  |
Common equity tier 1 capital ratio minimum |  |  |  |  |  |  |  | 7.00% |  |  |  |
Proceeds from issuing other equity instruments |  |  |  |  |  |  |  | $ 0 |  | 142,000,000 | 0 |
Payments of other equity instruments |  |  |  |  |  |  |  | 0 |  | 0 | 24,000,000 |
AT1 Securities |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuing other equity instruments |  |  |  |  |  |  |  | 0 |  | 142,000,000 | 27,000,000 |
Payments of other equity instruments |  |  |  |  |  |  |  | 0 |  | $ 0 | $ 24,000,000 |
Additional paid in capital |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) through capitalization |  |  |  |  |  | $ (4,200,000,000) |  |  |  |  |  |
Capital reduction | [1] |  |  |  |  |  |  | 4,579,000,000 |  |  |  |
Share capital |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) through capitalization |  |  |  |  |  | $ 4,200,000,000 |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Capital reduction |  |  |  |  | $ 4,600,000,000 |  |  | $ (4,579,000,000) | [1] |  |  |
Issued capital and additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Capital reduction |  |  |  |  | $ (4,600,000,000) |  |  |  |  |  |  |
Initial public offering (IPO) |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Share issue related cost |  | $ 8,500,000 |  |  |  |  |  |  |  |  |  |
Ordinary shares |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of votes | vote |  |  |  |  |  |  |  | 1 |  |  |  |
Amount distributed to shareholders |  |  |  | $ 10,000,000.0 |  |  |  | $ 10,000,000.0 |  |  |  |
Increase through issuance of equity (in shares) | shares |  |  |  |  |  |  |  | 12,211,338 |  | 1,277,664 |  |
Nominal value (in USD per share) | $ / shares |  |  |  |  |  |  |  | $ 0.00010 |  |  |  |
Number of options granted (in shares) | shares |  |  |  |  |  |  |  | 299,572 |  |  |  |
Redesignation | shares |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares | Restricted share units |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted (in shares) | shares |  |  |  |  |  |  |  | 2,563,600 |  |  |  |
Ordinary shares | Employee Equity Program |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of options granted (in shares) | shares |  |  |  |  |  |  |  | 1,948,166 |  |  |  |
Ordinary shares | Warrants |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of options exercised (in shares) | shares |  |  |  |  |  |  |  | 2,400,000 |  |  |  |
Ordinary shares | Initial public offering (IPO) |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Increase through issuance of equity (in shares) | shares |  | 5,000,000 |  |  |  |  |  |  |  |  |  |
Class B shares |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Number of votes | vote |  |  |  |  |  |  |  | 10 |  |  |  |
Class B to deferred shares automatic conversion , period |  |  |  |  |  |  |  | 20 years |  |  |  |
Increase through issuance of equity (in shares) | shares |  |  | 369,911,294 |  |  |  |  | 369,911,294 |  | 0 |  |
Nominal value (in USD per share) | $ / shares |  | $ 0.0001 | $ 0.0001 |  |  |  |  | $ 0.00010 |  |  |  |
Redesignation | shares |  | 41,774,705 |  |  |  |  |  | (41,774,705) |  |  |  |
Class C shares |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Amount distributed to shareholders |  |  |  | $ 5,000,000.0 |  |  |  | $ 5,000,000.0 |  |  |  |
Increase through issuance of equity (in shares) | shares |  |  |  |  |  |  |  | 0 |  | 0 |  |
Nominal value (in USD per share) | $ / shares |  |  |  |  |  |  |  | $ 0.00010 |  |  |  |
Redesignation | shares |  |  |  |  |  |  |  |  |  |  |  |
Deferred shares |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Increase through issuance of equity (in shares) | shares |  |  |  | 365,445,384 |  |  | 148,812 |  |  |  |  |
Nominal value (in USD per share) | $ / shares |  |  |  | $ 0.0007333 |  |  |  |  |  |  |  |
Deferred shares, type 2 |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Increase through issuance of equity (in shares) | shares |  |  | 369,911,294 |  |  |  |  | 369,911,294 |  | 0 |  |
Nominal value (in USD per share) | $ / shares |  |  | $ 11.35013 |  |  |  |  | $ 11.35013 |  |  |  |
Redesignation | shares |  |  |  |  |  |  |  |  |  |  |  |
[1] | 2 During the year a capital reduction of $4.6 billion resulting in a reallocation from share capital and additional paid in capital to retained earnings. See Note 21

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