Equity - Share capital and premium additional information (Details) shares in Thousands, $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
shares
|
Dec. 31, 2023
USD ($)
shares
|
Dec. 31, 2025
€ / shares
|
Dec. 31, 2025
USD ($)
shares
|
|
| Disclosure of classes of share capital [line items] | |||||
| Condition of conversion (percent) | 0.0700 | ||||
| Issue of contingent convertible capital securities | $ | $ 1,014 | $ 982 | $ 864 | ||
| 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 | 3,021,543 | ||
| Treasury shares | |||||
| Disclosure of classes of share capital [line items] | |||||
| Issued share capital, ordinary shares (in shares) | 51,100 | 154,600 | 119,100 | ||
| Perpetual additional tier 1 contingent capital securities | |||||
| Disclosure of classes of share capital [line items] | |||||
| Issued capital | $ | $ 8,750 | $ 7,750 | $ 9,000 | ||
| Ordinary shares | |||||
| Disclosure of classes of share capital [line items] | |||||
| Par value (in EUR per share) | € / shares | € 0.01 | ||||