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Cost of sales - Disclosure major items of cost of sales (Details) - INR (₨) ₨ in Thousands | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Disclosure Of Cost of Goods Sold And Services Rendered [Abstract] |  |  |
Personnel expenses | ₨ 2,873,767 | ₨ 2,859,329 | ₨ 2,407,234
Network Costs | 9,031,884 | 7,869,407 | 6,837,956
Cost of Hardware / Software | 4,418,906 | 4,326,509 | 5,134,730
Power Costs | 5,592,613 | 4,623,020 | 4,283,215
Total Amount Cost Of Sales | ₨ 21,917,170 | ₨ 19,678,265 | ₨ 18,663,135

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- Definition Cost of hardware or software. + References No definition available. + Details
Name: | sify_CostOfHardwareOrSoftware
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Network costs. + References No definition available. + Details
Name: | sify_NetworkCosts
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Personal expenses. + References No definition available. + Details
Name: | sify_PersonalExpenses
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Power costs. + References No definition available. + Details
Name: | sify_PowerCosts
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Total amount cost of sales. + References No definition available. + Details
Name: | sify_TotalAmountCostOfSales
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration