XML 183 R107.htm IDEA: XBRL DOCUMENT
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Income taxes (Income tax losses carried forward) (Details) - CAD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unrecognized deferred tax assets | $ 1,447,529,000 | $ 1,329,261,000
Unused tax loss carry forward | 1,760,518,000 | $ 2,171,825,000
Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 4,607,000 |
US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 629,477,000 |
Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 1,126,434,000 |
Unused tax expiry 2026 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 14,382,000 |
Unused tax expiry 2026 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2026 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2026 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 14,382,000 |
Unused tax expiry 2027 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 239,000 |
Unused tax expiry 2027 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2027 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2027 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 239,000 |
Unused tax expiry 2028 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 62,000 |
Unused tax expiry 2028 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2028 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2028 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 62,000 |
Unused tax expiry 2029 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 12,320,000 |
Unused tax expiry 2029 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 47,000 |
Unused tax expiry 2029 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2029 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 12,273,000 |
Unused tax expiry 2030 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 42,357,000 |
Unused tax expiry 2030 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2030 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2030 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 42,357,000 |
Unused tax expiry 2031 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 21,268,000 |
Unused tax expiry 2031 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2031 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 21,268,000 |
Unused tax expiry 2031 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2032 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 23,177,000 |
Unused tax expiry 2032 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 272,000 |
Unused tax expiry 2032 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 22,905,000 |
Unused tax expiry 2032 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2033 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 35,206,000 |
Unused tax expiry 2033 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2033 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 35,206,000 |
Unused tax expiry 2033 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2034 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 20,897,000 |
Unused tax expiry 2034 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2034 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 16,340,000 |
Unused tax expiry 2034 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 4,557,000 |
Unused tax expiry 2035 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 14,731,000 |
Unused tax expiry 2035 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2035 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 7,448,000 |
Unused tax expiry 2035 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 7,283,000 |
Unused tax expiry 2036 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 51,288,000 |
Unused tax expiry 2036 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2036 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 45,551,000 |
Unused tax expiry 2036 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 5,737,000 |
Unused tax expiry 2037 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 37,152,000 |
Unused tax expiry 2037 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 27,000 |
Unused tax expiry 2037 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 34,120,000 |
Unused tax expiry 2037 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 3,005,000 |
Unused tax expiry 2038 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 322,000 |
Unused tax expiry 2038 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2038 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2038 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 322,000 |
Unused tax expiry 2039 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 1,094,000 |
Unused tax expiry 2039 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 953,000 |
Unused tax expiry 2039 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2039 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 141,000 |
Unused tax expiry 2040 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 3,482,000 |
Unused tax expiry 2040 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 3,110,000 |
Unused tax expiry 2040 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2040 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 372,000 |
Unused tax expiry 2041 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 77,000 |
Unused tax expiry 2041 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 77,000 |
Unused tax expiry 2041 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2041 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2042 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 50,000 |
Unused tax expiry 2042 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 50,000 |
Unused tax expiry 2042 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2042 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2043 [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 71,000 |
Unused tax expiry 2043 [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 71,000 |
Unused tax expiry 2043 [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry 2043 [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry no expiry [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 1,482,343,000 |
Unused tax expiry no expiry [Member] | Canada [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 0 |
Unused tax expiry no expiry [Member] | US [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | 446,639,000 |
Unused tax expiry no expiry [Member] | Other [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused tax loss carry forward | $ 1,035,704,000 |

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