Income taxes - Unrecognized tax assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Disclosure Of Income Tax [Abstract] | ||
| Deductible temporary differences | $ 295,800 | $ 200,408 |
| Non-capital losses | 806,279 | 699,586 |
| Research and development expenditures | 61,928 | 38,837 |
| Unrecognized tax assets | $ 1,164,007 | $ 938,831 |
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- Definition The amount of deductible temporary differences for which no deferred tax asset is recognised in the statement of financial position. [Refer: Temporary differences [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Disclosure Of Income Tax [Abstract] No definition available.
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- Definition Research And Development Expense, Available For Reduction Of Future Taxable Income Not Subject To Expiration No definition available.
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- Definition Unrecognized Tax Benefits No definition available.
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