v3.8.0.1
Document and Entity Information
9 Months Ended
Sep. 30, 2017
shares
Document Information [Line Items]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus Q3
Trading Symbol SYNT
Entity Registrant Name SYNTEL INC
Entity Central Index Key 0001040426
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 82,853,897