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Intangible Assets - Summary of Intangible Assets (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | $ 373.3 |
Ending balance | 320.4 | $ 373.3
Cost |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 592.2 | 368.9
Additions | 25.7 | 49.2
Additions arising on acquisitions | 15.3 | 205.7
Removal of fully amortized assets | (44.4) | (26.0)
Disposals | (1.4) |
Impact of foreign exchange | 23.3 | (5.6)
Ending balance | 610.7 | 592.2
Accumulated depreciation |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | (218.9) | (186.9)
Amortization | 104.6 | 60.0
Removal of fully amortized assets | 44.4 | 26.0
Impact of foreign exchange | 11.2 | (2.0)
Ending balance | (290.3) | (218.9)
Client Relationships |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 278.2 |
Ending balance | 256.3 | 278.2
Client Relationships | Cost |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 463.2 | 325.0
Additions | 0.0 | 0.0
Additions arising on acquisitions | 13.1 | 152.6
Removal of fully amortized assets | (24.3) | (8.7)
Disposals | 0.0 |
Impact of foreign exchange | 19.9 | (5.7)
Ending balance | 471.9 | 463.2
Client Relationships | Accumulated depreciation |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | (185.0) | (163.2)
Amortization | 45.6 | 32.5
Removal of fully amortized assets | 24.3 | 8.7
Impact of foreign exchange | 9.3 | (2.0)
Ending balance | (215.6) | (185.0)
Contract Backlog |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 47.4 |
Ending balance | 17.2 | 47.4
Contract Backlog | Cost |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 50.2 | 2.6
Additions | 0.0 | 0.0
Additions arising on acquisitions | 1.7 | 51.5
Removal of fully amortized assets | (6.1) | (4.1)
Disposals | 0.0 |
Impact of foreign exchange | 2.8 | 0.2
Ending balance | 48.6 | 50.2
Contract Backlog | Accumulated depreciation |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | (2.8) | 0.0
Amortization | 33.3 | 6.8
Removal of fully amortized assets | 6.1 | 4.1
Impact of foreign exchange | 1.4 | 0.1
Ending balance | (31.4) | (2.8)
Software |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 43.7 |
Ending balance | 45.7 | 43.7
Software | Cost |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 74.7 | 39.3
Additions | 25.7 | 48.5
Additions arising on acquisitions | 0.5 | 0.0
Removal of fully amortized assets | (12.3) | (13.0)
Disposals | 0.0 |
Impact of foreign exchange | 0.4 | (0.1)
Ending balance | 89.0 | 74.7
Software | Accumulated depreciation |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | (31.0) | (23.7)
Amortization | 24.2 | 20.4
Removal of fully amortized assets | 12.3 | 13.0
Impact of foreign exchange | 0.4 | (0.1)
Ending balance | (43.3) | (31.0)
Other |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 4.0 |
Ending balance | 1.2 | 4.0
Other | Cost |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | 4.1 | 2.0
Additions | 0.0 | 0.7
Additions arising on acquisitions | 0.0 | 1.6
Removal of fully amortized assets | (1.7) | (0.2)
Disposals | (1.4) |
Impact of foreign exchange | 0.2 | 0.0
Ending balance | 1.2 | 4.1
Other | Accumulated depreciation |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |
Beginning balance | (0.1) | 0.0
Amortization | 1.5 | 0.3
Removal of fully amortized assets | 1.7 | 0.2
Impact of foreign exchange | 0.1 | 0.0
Ending balance | $ 0.0 | $ (0.1)

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- Definition The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2022-03-24 -Paragraph 118 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118_e&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_c&doctype=Standard -URIDate 2022-03-24 + Details
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