XML 121 R97.htm IDEA: XBRL DOCUMENT
v3.25.1

TAXATION - Operating loss carryforwards (Details) - CAD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Non-Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | $ 223,442 | $ 136,352
Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 9,204 | 11
Tax Period 1 | Non-Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 9,175 | 5,006
Tax Period 1 | Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 0 | 6
Tax Period 2 | Non-Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 26,350 | 16,720
Tax Period 2 | Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 9,204 | 5
No expiry | Non-Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 187,917 | 114,626
No expiry | Canadian |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Operating loss carryforwards | 0 | 0
Capital loss carryforwards | 86,269 | 89,433
No expiry | United States, Federal and State Tax Authority |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Capital loss carryforwards | $ 566 | $ 533

X
- Definition Capital Loss Carryforwards + References No definition available. + Details
Name: | ats_CapitalLossCarryforwards
Namespace Prefix: | ats_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Operating Loss Carryforwards + References No definition available. + Details
Name: | ats_OperatingLossCarryforwards
Namespace Prefix: | ats_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ats_TaxAuthorityAxis=ats_NonCanadianTaxAuthorityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ats_TaxAuthorityAxis=ats_CanadianTaxAuthorityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ats_ExpiryAxis=ats_TaxPeriod1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ats_ExpiryAxis=ats_TaxPeriod2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ats_ExpiryAxis=ats_NoExpiryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ats_TaxAuthorityAxis=ats_UnitedStatesFederalAndStateTaxAuthorityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |