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Financial Instruments (Details) - Schedule of interest payable and interest payments $ in Thousands | Dec. 31, 2021 CAD ($)
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Satellite performance incentive payments [Member] |
Financial Instruments (Details) - Schedule of interest payable and interest payments [Line Items] |
Interest payable | $ 361
Interest payments | 7,304
Indebtedness [Member] |
Financial Instruments (Details) - Schedule of interest payable and interest payments [Line Items] |
Interest payable | 19,453
Interest payments | $ 877,164

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- Definition The amount of interest recognised as a liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_InterestPayable
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- References No definition available. + Details
Name: | tsat_InterestPayments
Namespace Prefix: | tsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=tsat_SatellitePerformanceIncentivePaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=tsat_IndebtednessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |