Risks Arising from Financial Instruments - Summary of Allowance for Impairment (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of impairment loss and reversal of impairment loss [line items] | |||
| Impairment losses | $ 66 | ||
| Impairment losses [member] | |||
| Disclosure of impairment loss and reversal of impairment loss [line items] | |||
| Beginning balance | $ (438) | (462) | $ (416) |
| Impairment losses | (53) | (56) | (54) |
| Derecognition | 64 | 24 | 26 |
| Currency translation and other | (40) | 55 | (18) |
| Ending balance | $ (468) | $ (438) | $ (462) |