Financial instruments and risks - Summary of Significant Exchange Rates (Detail) |
12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2025
$ / SFr
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Dec. 31, 2025
$ / SFr
$ / €
|
Dec. 31, 2025
$ / SFr
$ / £
|
Dec. 31, 2025
$ / R$
$ / SFr
|
Dec. 31, 2024
$ / SFr
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Dec. 31, 2024
$ / SFr
$ / €
|
Dec. 31, 2024
$ / SFr
$ / £
|
Dec. 31, 2024
$ / SFr
$ / R$
|
Dec. 31, 2023
$ / SFr
|
Dec. 31, 2023
$ / €
|
Dec. 31, 2023
$ / £
|
Dec. 31, 2023
$ / R$
|
Dec. 31, 2025
$ / €
|
Dec. 31, 2025
$ / £
|
Dec. 31, 2025
$ / R$
|
Dec. 31, 2024
$ / €
|
Dec. 31, 2024
$ / £
|
Dec. 31, 2024
$ / R$
|
|
| Disclosure of detailed information about financial instruments [abstract] | ||||||||||||||||||
| Spot rate (in dollars per share) | 0.79208 | 0.79208 | 0.79208 | 0.79208 | 0.90740 | 0.90740 | 0.90740 | 0.90740 | 0.85092 | 0.74179 | 5.49560 | 0.96530 | 0.79870 | 6.17360 | ||||
| Average rate (in dollars per share) | 0.83064 | 0.88644 | 0.75887 | 5.58911 | 0.88064 | 0.92455 | 0.78267 | 5.39155 | 0.89855 | 0.92478 | 0.80428 | 4.97372 | ||||||