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Segment Information (Details) - Schedule of revenue derived from services - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Information (Details) - Schedule of revenue derived from services [Line Items] |  |  |
Revenue | $ 758,212 | $ 820,468 | $ 910,893
Broadcast [Member] |  |  |
Segment Information (Details) - Schedule of revenue derived from services [Line Items] |  |  |
Revenue | 390,815 | 411,407 | 444,478
Enterprise [Member] |  |  |
Segment Information (Details) - Schedule of revenue derived from services [Line Items] |  |  |
Revenue | 354,126 | 389,696 | 444,732
Consulting and Other [Member] |  |  |
Segment Information (Details) - Schedule of revenue derived from services [Line Items] |  |  |
Revenue | $ 13,271 | $ 19,365 | $ 21,683

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- Definition The amount of revenue arising from sources that the entity does not separately disclose in the same statement or note. [Refer: Revenue] + 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
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | tsat_
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Period Type: |