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Equity-accounted investee - Reconciliation of carrying amount (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of significant investments in associates [Line Items] |  |  |
Total comprehensive income | $ (14,402) |  | $ 33,188
Investment in equity-accounted investee | 219,688 |  | 252,681
JV Inkai Associate [Member] |  |  |
Disclosure of significant investments in associates [Line Items] |  |  |
Opening net assets | 442,074 |  | 416,843
Total comprehensive income | 113,661 |  | 111,094
Dividends declared | (64,456) |  | (66,369)
Impact of foreign exchange | (50,714) |  | (19,494)
Closing net assets | 440,565 |  | 442,074
Cameco's share of net assets | 176,226 |  | 176,830
Consolidating adjustments | (38,975) | [1] | (30,633)
Fair value increment | 89,184 | [2] | 91,697
Dividends declared but not yet received | 0 |  | 13,859
Dividends in excess of ownership percentage | (9,669) | [3] | 0
Impact of foreign exchange | 2,922 |  | 928
Investment in equity-accounted investee | $ 219,688 |  | $ 252,681
[1] | Cameco records certain consolidating adjustments to eliminate unrealized profit and amortize historical diffe rences in accounting policies. This amount is amortized to earnings over units of production.
[2] | Upon restructuring, Cameco assigned fair values to the assets and liabilities of JV Inkai. This increment is amortized to earnings over units of production .
[3] | Cameco’s share of dividends follows its production purchase entitlements which is currently hig her than its ownership interest .

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