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Lease Assets - Impairment losses and Related Recoverable Amounts for Reportable Segments (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment reversals | $ (8.1) | $ (5.8)
Net impairment of lease assets and property and equipment | (5.5) | 24.8
Recoverable amount | 4.3 | 7.9
Canada | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment reversals | (2.5) | (3.8)
Net impairment of lease assets and property and equipment | (2.4) | 8.6
Recoverable amount | 0.0 | 0.0
United States | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment reversals | (3.4) | (1.2)
Net impairment of lease assets and property and equipment | (3.1) | 16.2
Recoverable amount | 0.0 | 6.8
Global | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment reversals | (2.2) | (0.8)
Net impairment of lease assets and property and equipment | 0.0 | 0.0
Recoverable amount | 4.3 | 1.1
Lease assets |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses | 2.6 | 23.7
Lease assets | Canada | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses | 0.1 | 10.5
Lease assets | United States | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses | 0.3 | 12.6
Lease assets | Global | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses | $ 2.2 | 0.6
Property and equipment |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses |  | 6.9
Property and equipment | Canada | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses |  | 1.9
Property and equipment | United States | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses |  | 4.8
Property and equipment | Global | Reportable segments |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Impairment losses |  | $ 0.2

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- Definition The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 130 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 130 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_130_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount recognised as an increase of the carrying amount of an asset or cash-generating unit to its recoverable amount when an impairment loss had been previously recognised. [Refer: Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 130 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_130_d_ii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2022-03-24 -Paragraph 130 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2022-en-r&anchor=para_130_b&doctype=Standard -URIDate 2022-03-24 + Details
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