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Lease Assets - Additional Information (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Impairment reversals | $ 1.1 |
Recoverable amount remaining | 1.3 |
Onerous contracts |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Additional provisions, other provisions | 6.8 | $ 2.5
Right-of-use assets |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Net impairment charge (reversal) | (29.0) | 1.6
Property, plant and equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Property and equipment | 6.1 |
United States And Canada |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Impairment reversals |  | 4.4
United States |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Impairment reversals | 0.6 |
Recoverable amount remaining | 0.0 |
United States | Right-of-use assets |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Property and equipment |  | 2.1
United States | Property, plant and equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Property and equipment | 0.4 | 2.6
Canada |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Impairment reversals | 0.4 |
Recoverable amount remaining | 0.0 |
Canada | Property, plant and equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Property and equipment | 5.2 |
Global |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Impairment reversals | 0.1 |
Recoverable amount remaining | 1.3 | $ 2.8
Global | Property, plant and equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Property and equipment | $ 0.5 |
Bottom of range | Office space |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 1 year |
Bottom of range | Office equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 1 year |
Bottom of range | IT and other equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 1 year |
Top of range | Office space |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 15 years |
Top of range | Office equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 7 years |
Top of range | IT and other equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 5 years |
Weighted average | Office space |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 6 years 1 month 6 days | 6 years 2 months 12 days
Weighted average | Office equipment |  |
Disclosure of detailed information about quantitative information about leases for lessee [Line Items] |  |
Lease term | 2 years 6 months | 2 years 9 months 18 days

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