Share Capital - Schedule of Number of Shares and Stated Value of the Outstanding Shares (Details) - CAD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Schedule of Number of Shares and Stated Value of the Outstanding Shares [Line Items] | ||
| Number of shares | 15,219,358 | 14,843,623 |
| Stated value | $ 87,186 | $ 69,997 |
| Telesat Public Shares [Member] | ||
| Schedule of Number of Shares and Stated Value of the Outstanding Shares [Line Items] | ||
| Number of shares | 15,106,517 | 14,730,782 |
| Stated value | $ 80,846 | $ 63,657 |
| Class C Shares [Member] | ||
| Schedule of Number of Shares and Stated Value of the Outstanding Shares [Line Items] | ||
| Number of shares | 112,841 | 112,841 |
| Stated value | $ 6,340 | $ 6,340 |