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Joint operations (Tables)
 12 Months Ended
Dec. 31, 2022
Disclosure Of Joint Operations [Abstract]  
Joint operations proportionate interest in net assets table
Cameco reflects its proportionate interest in these assets and liabilities as follows:
Principal place
 
of business
Ownership
2022
2021
Total assets
McArthur River
Canada
69.81%
$
998,368
$
1,010,956
Key Lake
Canada
83.33%
527,841
549,051
Cigar Lake
(a)
Canada
54.55%
1,219,036
1,294,333
$
2,745,245
$
2,854,340
Total liabilities
McArthur River
69.81%
$
37,881
$
36,697
Key Lake
83.33%
240,487
267,579
Cigar Lake
(a)
54.55%
50,362
45,503
$
328,730
$
349,779
(a) Cameco’s ownership stake in the Cigar Lake uranium mine in northern Saskatchewan was previously
50.025
%. On May
19, 2022, Cameco and Orano completed the acquisition of Idemitsu’s
7.875
% participating interest in the CLJV by acquiring
their pro rata shares through an asset purchase (note 6).