XML 105 R66.htm IDEA: XBRL DOCUMENT
v3.25.3

Supplementary cash flow information (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2025
Cash Flow Statement [Abstract] |
Disclosure of net change in non-cash working capital | Net change in non-cash working capital items and others is as follows for the years ended September 30:
|  | 2025 | 2024
|  | $ | $
Accounts receivable |  | 80,109 |  | 106,360 |
Work in progress |  | (63,386) |  | (8,999) |
Prepaid expenses and other assets |  | 49,158 |  | 4,466 |
Long-term financial assets |  | (9,329) |  | (24,423) |
Accounts payable and accrued liabilities |  | (167,764) |  | 22,151 |
Accrued compensation and employee-related liabilities |  | (59,885) |  | (27,689) |
Deferred revenue |  | (1,932) |  | 50,420 |
Income taxes |  | (85,430) |  | (98,207) |
Provisions |  | 122,426 |  | (594) |
Long-term liabilities |  | 7,739 |  | 33,540 |
Derivative financial instruments |  | 118 |  | 634 |
Retirement benefits obligations |  | 9,133 |  | 7,337 |
|  | (119,043) |  | 64,996 |
Disclosure of non-cash operating and investing activities | Non-cash operating and investing activities are as follows for the years ended September 30:
|  | 2025 | 2024
|  | $ | $
Operating activities |  |  |
Accounts receivable |  | — |  | (12) |
Accounts payable and accrued liabilities |  | 45,269 |  | 35,992 |
Provisions |  | 1,219 |  | 576 |
Other long-term liabilities |  | 19,401 |  | 13,524 |
|  | 65,889 |  | 50,080 |
Investing activities |  |  |
Purchase of PP&E |  | (12,021) |  | (11,158) |
Additions, disposals/retirements, change in estimates and lease modifications of right-of-use assets |  | (143,914) |  | (110,778) |
Additions to intangible assets |  | (59,927) |  | (40,908) |
|  | (215,862) |  | (162,844) |
Disclosure of financing activities | Changes arising from financing activities are as follows for the years ended September 30:
| 2025 | 2024
| Long-term debt | Derivative financial instruments to hedge long-term debt | Lease liabilities | Long-term debt | Derivative financial instruments to hedge long-term debt | Lease liabilities
| $ | $ | $ | $ | $ | $
Balance, beginning of year | 2,688,308 |  | 9,500 |  | 620,095 |  | 3,100,321 |  | (97,575) |  | 641,963 |
Cash used in financing activities excluding equity |  |  |  |  |  |
Increase of long-term debt | 923,922 |  | — |  | — |  | 747,073 |  | — |  | — |
Repayment of long-term debt and lease liabilities | — |  | — |  | (177,465) |  | (1,154,878) |  | — |  | (146,762) |
Repayment of debt assumed in business acquisitions | (47,953) |  | — |  | — |  | (162,146) |  | — |  | — |
Settlement of derivative financial instruments (Note 32) | — |  | — |  | — |  | — |  | 38,943 |  | — |
Non-cash financing activities |  |  |  |  |  |
Additions, disposals/retirements and change in estimates and lease modifications of right-of-use assets | — |  | — |  | 144,967 |  | — |  | — |  | 110,778 |
Additions through business acquisitions (Note 27) | 58,376 |  | — |  | 69,771 |  | 162,146 |  | — |  | 2,341 |
Changes in foreign currency exchange rates | 13,623 |  | 128,285 |  | 32,319 |  | (6,715) |  | 68,132 |  | 18,914 |
Other | 1,559 |  | — |  | 3,797 |  | 2,507 |  | — |  | (7,139) |
Balance, end of year | 3,637,835 |  | 137,785 |  | 693,484 |  | 2,688,308 |  | 9,500 |  | 620,095 |
Disclosure of interest and income taxes paid and received | Interest paid and received and income taxes paid are classified within operating activities and are as follows for the years ended September 30:
|  | 2025 | 2024
|  | $ | $
Interest paid |  | 129,133 |  | 102,180 |
Interest received |  | 62,604 |  | 87,153 |
Income taxes paid |  | 603,370 |  | 740,325 |

X
- Definition Cash Flows Statement [Abstract] + References No definition available. + Details
Name: | gib_CashFlowStatementAbstract
Namespace Prefix: | gib_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Financing Activities Explanatory [Table Text Block] + References No definition available. + Details
Name: | gib_DisclosureOfFinancingActivitiesExplanatoryTableTextBlock
Namespace Prefix: | gib_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Interest And Income Taxes Paid Explanatory [Table Text Block] + References No definition available. + Details
Name: | gib_DisclosureOfInterestAndIncomeTaxesPaidExplanatoryTableTextBlock
Namespace Prefix: | gib_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Net Change In Non-Cash Working Capital Explanatory [Text Block] + References No definition available. + Details
Name: | gib_DisclosureOfNetChangeInNonCashWorkingCapitalExplanatoryTableTextBlock
Namespace Prefix: | gib_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Non-Cash Operating And Investing Activities Explanatory [Table Text Block] + References No definition available. + Details
Name: | gib_DisclosureOfNonCashOperatingAndInvestingActivitiesExplanatoryTableTextBlock
Namespace Prefix: | gib_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration