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LONG-TERM DEBT (Disclosure of long-term debt) (Details) - CAD ($) | Mar. 31, 2025 | Mar. 31, 2024 | Feb. 10, 2022
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Debt instruments held [abstract] |  |  |
First mortgage payable in monthly installments of $43,764 (2023 - $85,504) including interest at 5% per annum, due October 1, 2025, with land and building, having a net book value of $1,910,158 (March 31, 2023: $2,012,414), pledged as collateral | $ 346,747 | $ 757,727 | $ 1,949,000
Less current portion | (346,747) | (498,613) |
Total long-term debt | $ 0 | $ 259,114 |

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- Definition The current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentPortionOfLongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_DebtInstrumentsHeldAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_LongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of mortgage payable. + References No definition available. + Details
Name: | ztek_MortgagePayable
Namespace Prefix: | ztek_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant