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Significant Accounting Policies (Details) - Schedule of satellites, property and other equipment | 12 Months Ended
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Dec. 31, 2021
Bottom of range [member] |
Significant Accounting Policies (Details) - Schedule of satellites, property and other equipment [Line Items] |
Satellites | 12 years
Right-of-use assets | 2 years
Antennas, satellite control & communication equipment | 8 years
Building, equipment & other | 3 years
Top of range [member] |
Significant Accounting Policies (Details) - Schedule of satellites, property and other equipment [Line Items] |
Satellites | 15 years
Right-of-use assets | 27 years
Antennas, satellite control & communication equipment | 20 years
Building, equipment & other | 25 years

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- Definition Antennas, satellite control & communication equipment. + References No definition available. + Details
Name: | tsat_AntennasSatelliteControlCommunicationEquipment
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Building, equipment & other. + References No definition available. + Details
Name: | tsat_BuildingEquipmentOther
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Right-of-use assets. + References No definition available. + Details
Name: | tsat_Right-of-useassets
Namespace Prefix: | tsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

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- References No definition available. + Details
Name: | tsat_SignificantAccountingPoliciesDetailsScheduleofsatellitespropertyandotherequipmentLineItems
Namespace Prefix: | tsat_
Data Type: | xbrli:stringItemType
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: |