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Significant Accounting Policies (Details) - Schedule of finite life intangible assets | 12 Months Ended
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Dec. 31, 2021
Significant Accounting Policies (Details) - Schedule of finite life intangible assets [Line Items] |
Revenue backlog | 17 years
Customer contracts | 15 years
Transponder rights | 16 years
Software | 5 years
Patents | 18 years
Bottom of range [member] |
Significant Accounting Policies (Details) - Schedule of finite life intangible assets [Line Items] |
Customer relationships | 20 years
Concession rights | 3 years
Top of range [member] |
Significant Accounting Policies (Details) - Schedule of finite life intangible assets [Line Items] |
Customer relationships | 21 years
Concession rights | 15 years

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- Definition Concession rights. + References No definition available. + Details
Name: | tsat_ConcessionRights
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Customer relationships. + References No definition available. + Details
Name: | tsat_CustomerRelationships
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Customer contracts (in Dollars). + References No definition available. + Details
Name: | tsat_Customercontracts
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Patents. + References No definition available. + Details
Name: | tsat_Patents
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue backlog (in Dollars). + References No definition available. + Details
Name: | tsat_Revenuebacklog
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Software. + References No definition available. + Details
Name: | tsat_Software
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Transponder rights (in Dollars). + References No definition available. + Details
Name: | tsat_Transponderrights
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |