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Employee Benefit Plans (Details) - Schedule of impact on defined benefit obligation from one percent increase or decrease change in assumptions used | Dec. 31, 2021 | Dec. 31, 2020
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Canada [Member] |  |
Actuarial benefit obligation |  |
Discount rate | 3.20% | 2.60%
Benefit costs for the year ended |  |
Discount rate | 2.80% | 3.20%
Future salary growth | 2.50% | 2.50%
United States of America, Dollars [Member] |  |
Actuarial benefit obligation |  |
Discount rate | 2.85% |
Benefit costs for the year ended |  |
Discount rate | 2.75% |
Future salary growth |  |

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References No definition available. + Details
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Namespace Prefix: | tsat_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References No definition available. + Details
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Namespace Prefix: | tsat_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | tsat_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | na
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- References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |