Lease liabilities - Summary of lease liabilities activity (Detail) - USD ($) $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Lease liabilities [abstract] | |||||
| Balance at the beginning of the year | $ 776 | $ 666 | $ 566 | ||
| Increases of leases | 216 | 444 | 404 | ||
| Financial accretions | 65 | 71 | 77 | ||
| Decreases of leases | (80) | (5) | (23) | ||
| Payments | (406) | (400) | (359) | ||
| Result from net monetary position | [1] | 1 | |||
| Balance at the end of year | $ 571 | $ 776 | $ 666 | ||
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