v3.26.1
Financial Instruments - Schedule of Contractual Maturities of Financial Liabilities (Details)
$ in Thousands
Mar. 31, 2026
CAD ($)
Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities $ 7,921,930
2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 3,481,557
2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 639,646
2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 217,935
2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 477,988
2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 571,337
Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,533,467
Trade and other payables [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 88,845
Trade and other payables [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 88,845
Trade and other payables [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Trade and other payables [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Trade and other payables [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Trade and other payables [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Trade and other payables [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Customer and other deposits [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 1,391
Customer and other deposits [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 576
Customer and other deposits [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 520
Customer and other deposits [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 137
Customer and other deposits [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Customer and other deposits [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Customer and other deposits [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 158
Satellite performance incentive payments [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 14,752
Satellite performance incentive payments [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 3,890
Satellite performance incentive payments [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,662
Satellite performance incentive payments [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,544
Satellite performance incentive payments [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,544
Satellite performance incentive payments [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,544
Satellite performance incentive payments [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 568
Derivative Liabilities [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 848,313
Derivative Liabilities [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 848,313
Derivative Liabilities [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Derivative Liabilities [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Derivative Liabilities [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Derivative Liabilities [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Derivative Liabilities [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Other financial liabilities [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,196
Other financial liabilities [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,196
Other financial liabilities [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Other financial liabilities [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Other financial liabilities [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Other financial liabilities [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Other financial liabilities [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities
Indebtedness [Member] | Contractual cash flows (undiscounted) [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 6,966,433 [1]
Indebtedness [Member] | 2026 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,537,737 [1]
Indebtedness [Member] | 2027 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 636,464 [1]
Indebtedness [Member] | 2028 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 215,254 [1]
Indebtedness [Member] | 2029 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 475,444 [1]
Indebtedness [Member] | 2030 [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 568,793 [1]
Indebtedness [Member] | Thereafter [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,532,741 [1]
Carrying amount [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 4,832,985
Carrying amount [Member] | Trade and other payables [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 88,845
Carrying amount [Member] | Customer and other deposits [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 1,391
Carrying amount [Member] | Satellite performance incentive payments [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 12,735
Carrying amount [Member] | Derivative Liabilities [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 848,313
Carrying amount [Member] | Other financial liabilities [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities 2,196
Carrying amount [Member] | Indebtedness [Member]  
Schedule of Contractual Maturities of Financial Liabilities [Line items]  
Total contractual maturities of financial liabilities $ 3,879,505 [1]
[1] Indebtedness excludes deferred financing costs, prepayment options, warrants and loss on repayment. The contractual cash flows for Telesat Lightspeed Financing include anticipated future drawings and mandatory repayments against the loan.