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Income taxes - Non Capital Losses Carry Forwards (Detail) $ in Thousands | Dec. 31, 2023 USD ($)
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Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | $ 2,823,170
Tax credits | 204,131
Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 917,120
U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 1,906,050
2024—2028 |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 11,780
Tax credits | 3,359
2024—2028 | Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 3,339
2024—2028 | U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 8,441
2029+ |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 2,811,390
Tax credits | 200,772
2029+ | Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 913,781
2029+ | U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | $ 1,897,609

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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