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Commitments, contingencies and guarantees - Commitments (Details)	Sep. 30, 2023 CAD ($)
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]
Minimum payments due under long-term service and other agreements	$ 323,957,000

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- Definition

Commitments For Long-Term Service And Other Agreements

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No definition available.

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Balance Type:	credit
Period Type:	instant

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- Definition

Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]

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No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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