Financial Risk Management (Details 7) - INR (₨) ₨ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Disclosure of financial risk management [Abstract]
Equity	₨ 0	₨ 0
Profit or (loss)	₨ (32,644)	₨ (24,161)

The amount of change in net profit due to change in basis points.

No definition available.

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