XML 151 R113.htm IDEA: XBRL DOCUMENT v3.24.4

Share-based payments - Disclosure of share-based payment expense (Details) - CAD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment expense	$ 254,213	$ 232,964
PSUs
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment expense	67,054	55,847
Stock options
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment expense	786	2,367
Share purchase plan
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment expense	181,989	169,418
DSUs
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment expense	$ 4,384	$ 5,332

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

X

- Definition

The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=gib_PerformanceShareUnitsPSUsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=gib_EmployeeStockOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=gib_EmployeeSharePurchasePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=gib_DeferredShareUnitPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: