Capital and reserves - Additional Information (Details) - USD ($) $ in Millions |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Feb. 28, 2026 |
|
| Disclosure of classes of share capital [line items] | |||
| Repurchase and retirement of ordinary shares (including treasury shares) | $ 400 | $ 274 | |
| Payments to acquire or redeem entity's shares | 400 | 274 | |
| Accumulated losses | |||
| Disclosure of classes of share capital [line items] | |||
| Repurchase and retirement of ordinary shares (including treasury shares) | 191 | $ 274 | |
| Class A ordinary shares | |||
| Disclosure of classes of share capital [line items] | |||
| Share repurchase program authorized amount | $ 500 | ||
| Purchase of treasury shares | 59 | ||
| Payments to acquire or redeem entity's shares | $ 150 | ||