Segmented information (Tables)	12 Months Ended
Segmented information (Tables)	Dec. 31, 2024
Segmented information [Abstract]
Business segments	A. Business segments - 2024 For the year ended December 31, 2024 Uranium Fuel services (i) WEC (i) Adjustments Other Total Revenue $ 2,676,620 $ 459,152 $ 2,892,467 $ (2,892,467) $ - $ 3,135,772 Expenses Cost of products and services sold 1,757,155 316,040 1,016,980 (1,016,980) (707) 2,072,488 Depreciation and amortization 238,726 37,236 356,864 (356,864) 4,740 280,702 Cost of sales 1,995,881 353,276 1,373,844 (1,373,844) 4,033 2,353,190 Gross profit (loss) 680,739 105,876 1,518,623 (1,518,623) (4,033) 782,582 Administration - - 1,460,657 (1,460,657) 253,150 253,150 Exploration 19,419 - - - - 19,419 Research and development - - - - 36,540 36,540 Other operating income (35,090) (2,593) - - - (37,683) (Gain) loss on disposal of assets 253 791 - - (2) 1,042 Finance costs - - 225,188 (225,188) 147,171 147,171 Loss on derivatives - - - - 183,103 183,103 Finance income - - (4,381) 4,381 (21,228) (21,228) Share of loss (earnings) from equity-accounted investees (207,583) - - 218,427 - 10,844 Foreign exchange gains - - - - (65,517) (65,517) Other expense (income) - - 116,697 (116,697) (975) (975) Earnings (loss) before income taxes 903,740 107,678 (279,538) 61,111 (536,275) 256,716 Income tax expense 84,874 Net earnings 171,842 Capital expenditures for the year $ 132,827 $ 48,667 $ 176,229 $ (176,229) $ 30,141 $ 211,635 (i) Consistent with the presentation of financial information for internal management purposes, Cameco’s share of Westinghouse’s financial results have been presented as a separate segment. In accordance with IFRS, this investment is accounted for by the equity method of accounting in these consolidated financial statements and the associated revenues and expenses are eliminated in the “Adjustments” column. For the year ended December 31, 2023 Uranium Fuel services (i) WEC (i) Adjustments Other Total Revenue $ 2,153,153 $ 425,557 $ 521,074 $ (521,074) $ 9,048 $ 2,587,758 Expenses Cost of products and services sold 1,532,316 266,062 200,285 (200,285) 7,390 1,805,768 Depreciation and amortization 175,457 35,426 60,766 (60,766) 9,441 220,324 Cost of sales 1,707,773 301,488 261,051 (261,051) 16,831 2,026,092 Gross profit (loss) 445,380 124,069 260,023 (260,023) (7,783) 561,666 Administration - - 244,400 (244,400) 245,539 245,539 Exploration 17,551 - - - - 17,551 Research and development - - - - 21,036 21,036 Other operating income (1,875) (5,634) - - - (7,509) Loss on disposal of assets 1,825 363 - - - 2,188 Finance costs - - 26,274 (26,274) 115,869 115,869 Loss (gain) on derivatives - - 2,838 (2,838) (37,791) (37,791) Finance income - - (1,885) 1,885 (111,670) (111,670) Share of loss (earnings) from equity-accounted investee (178,848) - - 24,386 - (154,462) Foreign exchange gains - - - - (15,692) (15,692) Other expense (income) (545) - 19,424 (19,424) (1) (546) Earnings (loss) before income taxes 607,272 129,340 (31,028) 6,642 (225,073) 487,153 Income tax expense 126,337 Net earnings 360,816 Capital expenditures for the year $ 105,384 $ 42,546 $ 42,405 $ (42,405) $ 5,701 $ 153,631 (i) Consistent with the presentation of financial information for internal management purposes, Cameco’s share of Westinghouse’s financial results have been presented as a separate segment. In accordance with IFRS, this investment is accounted for by the equity method of accounting in these consolidated financial statements and the associated revenues and expenses are eliminated in the “Adjustments” column.
Geographic segments	2024 2023 Canada $ 2,495,748 $ 1,877,742 United States 640,024 710,016 $ 3,135,772 $ 2,587,758 2024 2023 Canada $ 2,859,401 $ 2,947,395 United States 3,015,292 2,975,148 Australia 383,338 389,152 Kazakhstan 286,759 273,834 Germany 3 5 $ 6,544,793 $ 6,585,534