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Employee benefits (Details 2) - INR (₨) ₨ in Thousands | Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
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Disclosure Of Employee Benefits [Line Items] |  |  |  |
Projected benefit obligation at the end of the year | ₨ 445,864 | ₨ 382,492 | ₨ 298,903 | ₨ 216,006
Plan assets at the end of the year | (398,663) | (357,360) | ₨ (271,170) | ₨ (138,180)
Funded status amount of liability recognised in the Balance Sheet | ₨ 47,201 | ₨ 25,132 |  |

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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 140 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_57_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_PlanAssetsAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Definition Funded status amount of liability. + References No definition available. + Details
Name: | sify_FundedStatusAmountOfLiability
Namespace Prefix: | sify_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant