Satellites, Property and Other Equipment (Details) - CAD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Satellites, Property and Other Equipment [Abstract]
Primarily related to acquisitions associated	$ 152.6	$ 178.5

The amount of additions to investment property resulting from acquisitions. [Refer: Investment property]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2025-01-01
-Paragraph 76
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_76_a&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2025-01-01
-Paragraph 79
-Subparagraph d
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2025-en-r&anchor=para_79_d_i&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_AdditionsFromAcquisitionsInvestmentProperty
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration