XML 164 R126.htm IDEA: XBRL DOCUMENT
v3.24.4

Segmented information - Disclosure of operating segment information (Details) - CAD ($) | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Disclosure of operating segments [line items] |  |
Segment revenue | $ 14,676,152,000 | $ 14,296,360,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 2,415,769,000 | 2,312,741,000
Acquisition-related and integration costs | (5,866,000) | (53,401,000)
Cost optimization program (Note 25) | (91,063,000) | (8,964,000)
Net finance costs | (27,889,000) | (52,463,000)
Earnings before income taxes | 2,290,951,000 | 2,197,913,000
Amortization and depreciation, without amortization of deferred financing fees | 523,530,000 | 507,087,000
Impairment | 11,574,000 |
Western and Southern Europe |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 2,600,198,000 | 2,605,926,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 334,165,000 | 355,578,000
Amortization and depreciation, without amortization of deferred financing fees | 71,807,000 | 85,049,000
U.S. Commercial and State Government |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 2,327,309,000 | 2,277,996,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 337,325,000 | 339,410,000
Amortization and depreciation, without amortization of deferred financing fees | 97,552,000 | 83,359,000
Impairment | 7,932,000 |
Canada |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 2,034,995,000 | 2,064,659,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 463,171,000 | 477,502,000
Amortization and depreciation, without amortization of deferred financing fees | 60,132,000 | 55,589,000
U.S. Federal |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 2,001,391,000 | 1,935,238,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 322,698,000 | 306,362,000
Amortization and depreciation, without amortization of deferred financing fees | 60,779,000 | 59,334,000
Scandinavia and Central Europe |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 1,658,172,000 | 1,648,356,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 150,913,000 | 127,320,000
Amortization and depreciation, without amortization of deferred financing fees | 86,683,000 | 90,098,000
U.K. and Australia |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 1,584,833,000 | 1,455,529,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 251,662,000 | 216,517,000
Amortization and depreciation, without amortization of deferred financing fees | 44,999,000 | 38,423,000
Finland, Poland and Baltics |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 859,263,000 | 828,951,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 133,437,000 | 110,583,000
Amortization and depreciation, without amortization of deferred financing fees | 37,700,000 | 38,345,000
Northwest and Central-East Europe |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 828,726,000 | 755,901,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 129,277,000 | 101,871,000
Amortization and depreciation, without amortization of deferred financing fees | 34,970,000 | 31,616,000
Asia Pacific |  |
Disclosure of operating segments [line items] |  |
Segment revenue | 956,145,000 | 904,038,000
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | 293,121,000 | 277,598,000
Amortization and depreciation, without amortization of deferred financing fees | 28,908,000 | 25,274,000
Eliminations |  |
Disclosure of operating segments [line items] |  |
Segment revenue | (174,880,000) | (180,234,000)
Segment earnings before acquisition-related and integration costs, net finance costs and income tax expense | $ 0 | $ 0

X
- Definition Cost Optimization Program Expenses + References No definition available. + Details
Name: | gib_CostOptimizationProgramExpenses
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Depreciation And Amortisation Expense, Without Amortization Of Deferred Financing Fees + References No definition available. + Details
Name: | gib_DepreciationAndAmortisationExpenseWithoutAmortizationOfDeferredFinancingFees
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Profit (Loss) Before Amounts Recognised Separately In Business Combination, Finance Costs And Tax Expense (Income) + References No definition available. + Details
Name: | gib_ProfitLossBeforeAmountsRecognisedSeparatelyInBusinessCombinationFinanceCostsAndTaxExpenseIncome
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amounts recognised for transaction recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Total for all business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B64 -Subparagraph l -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_l_iii&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
Name: | ifrs-full_AmountsRecognisedForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income or cost associated with interest and other financing activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FinanceIncomeCost
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The profit (loss) before tax expense or income. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_i&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProfitLossBeforeTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_a&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 32 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_32&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_33_a&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 34 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_34&doctype=Standard -URIDate 2024-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2024-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2024-en-r&anchor=para_33_b_i&doctype=Standard -URIDate 2024-03-27 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B12 -Subparagraph b -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B10 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 82 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_a&doctype=Standard -URIDate 2024-03-27 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_103&doctype=Standard -URIDate 2024-03-27 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_Revenue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_WesternAndSouthernEuropeSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_USCommercialAndStateGovernmentSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_CanadaSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_USFederalSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_ScandinaviaAndCentralEuropeSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_UnitedKingdomAndAustraliaSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_FinlandPolandAndBalticsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_NorthwestAndCentralEastEuropeSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=gib_AsiaPacificSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=srt_GeographyEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |