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Contract balances (Details 2) - INR (₨) ₨ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statements [Line Items]
Balance as at April 1	₨ 5,137,360	₨ 4,296,441
Revenue recognised that was included in deferred revenue at the beginning of the year	₨ (2,141,581)	₨ (1,183,207)

X

- Definition

Represents the contract liabilities adjustment.

+ References

No definition available.

+ Details

Name:	sify_ContractLiabilitiesAdjustment
Namespace Prefix:	sify_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Revenue that was included in deferred revenue at beginning of period.

+ References

No definition available.

+ Details

Name:	sify_RevenueThatWasIncludedInDeferredRevenueAtBeginningOfPeriod
Namespace Prefix:	sify_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Statements [Line Items]

+ References

No definition available.

+ Details

Name:	sify_StatementsLineItems
Namespace Prefix:	sify_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration