Revenue (Narrative) (Details) - CAD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Revenue [Abstract] | ||
| Revenue From Performance Obligations Satisfied Or Partially Satisfied In Previous Periods | $ 4,040,000 | $ 42,000 |
| Explanation Of Effect That Timing Of Satisfaction Of Performance Obligations And Typical Timing Of Payment Have On Contract Assets And Contract Liabilities Explanatory | The revenue related to storage is recognized over time while the revenue related to future uranium and conversion deliveries is expected to be recognized between 2026 and 2033 as deliveries occur. |
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| Disclosure Of Information About Methods Inputs And Assumptions Used For Determining Transaction Price Explanatory | Cameco’s sales portfolio consists of short and long-term sales commitments. The contracts can be executed well in advance of a delivery and include both fixed and market-related pricing. |
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