XML 87 R76.htm IDEA: XBRL DOCUMENT
v3.25.3

Share Capital - Schedule of Number of Shares and Stated Value of the Outstanding Shares (Details) | 9 Months Ended
--- | ---
Sep. 30, 2025 shares
Telesat Public shares |
Telesat Public shares | 14,685,375
Class A Common Shares [Member] |
Telesat Public shares |
Telesat Public shares | 3,955,135
Class B Variable Voting Shares [Member] |
Telesat Public shares |
Telesat Public shares | 10,730,240

X
- Definition breakdown of Telesat Public shares. + References No definition available. + Details
Name: | tsat_BreakDownOfTelesatPublicShares
Namespace Prefix: | tsat_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | tsat_TelesatPublicSharesAbstract
Namespace Prefix: | tsat_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=tsat_ClassACommonSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=tsat_ClassBVariableVotingSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |