Income Tax - Summary of Years Open to Examination under Different Jurisdiction (Detail) |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Canada [Member] | Canada [Member] | |
| Income Tax Examination [Line Items] | |
| Years open to examination | 2021 2022 2023 2024 2025 |
| Canada [Member] | UK [Member] | |
| Income Tax Examination [Line Items] | |
| Years open to examination | 2019 2020 2021 2022 2023 2024 2025 |
| US [Member] | |
| Income Tax Examination [Line Items] | |
| Years open to examination | 2022 2023 2024 2025 |