XML 180 R138.htm IDEA: XBRL DOCUMENT
v3.23.3

Financial instruments - Narrative (Details) - CAD ($) | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | $ 3,100,321,000 | $ 3,267,034,000
Settlement of derivative financial instruments | 2,921,000 | 6,258,000
Cash and cash equivalents, funds held for clients, short-term investments and long-term investments | 2,081,463,000 | 1,588,307,000
Available credit facility | 1,495,858,000 | 1,495,730,000
Trade receivables | 1,152,880,000 | $ 1,106,187,000
Settled cross-currency swap agreement |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Notional amount of financial liabilities | $ 69,300,000 |
Interest rate risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, percent | 1.00% |
Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Sensitivity analysis for types of market risk, reasonably possible change in risk variable, percent | 10.00% |
Senior U.S. Unsecured Notes [Member] | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Borrowings | $ 1,525,519,000 |
Hedges of net investments in European operations | Currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Notional amount of financial liabilities | 1,536,563,000 |
At fair value | Settled cross-currency swap agreement |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Settlement of derivative financial instruments | $ 2,921,000 |

X
- Definition Cash, Cash Equivalents, Funds Held For Clients, Short-Term Investments And Long-Term Investments + References No definition available. + Details
Name: | gib_CashCashEquivalentsFundsHeldForClientsShortTermInvestmentsAndLongTermInvestments
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Notional Amount Of Financial Liabilities + References No definition available. + Details
Name: | gib_NotionalAmountOfFinancialLiabilities
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payments For Settlement Of Derivative Financial Instruments, Classified As Financing Activities, Carrying Amount and Accumulated Amount At Fair Value + References No definition available. + Details
Name: | gib_ProceedsPaymentsForSettlementOfDerivativeFinancialInstrumentsClassifiedAsFinancingActivitiesCarryingAmountAndAccumulatedAmountAtFairValue
Namespace Prefix: | gib_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sensitivity Analysis For Types Of Currency Risk, Reasonably Possible Change In Risk Variable, Percent + References No definition available. + Details
Name: | gib_SensitivityAnalysisForTypesOfCurrencyRiskReasonablyPossibleChangeInRiskVariablePercent
Namespace Prefix: | gib_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount due from customers for goods and services sold. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_b&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_TradeReceivables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 50 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_50_a&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_UndrawnBorrowingFacilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=gib_CrossCurrencySwapAgreementsSettledMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=gib_SeniorU.S.UnsecuredNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfHedgesAxis=ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |