Personnel expenses (Details Textual) ₨ in Millions	12 Months Ended
Mar. 31, 2026 INR (₨)
Disclosure Of Personnel Expenses [Abstract]
Increase in provision for gratuity and remeasurement of leave encashment	₨ 24

The amount of increase in provision for gratuity and remeasurement of leave encashment.

No definition available.

Name:	sify_IncreaseInProvisionForGratuityAndRemeasurementOfLeaveEncashment
Namespace Prefix:	sify_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration