Document and Entity Information
9 Months Ended
Oct. 31, 2018
Document Document And Entity Information [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Oct. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q3
Trading Symbol TIF
Entity Registrant Name TIFFANY & CO
Entity Central Index Key 0000098246
Current Fiscal Year End Date --01-31
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Small Business false
Entity Common Stock, Shares Outstanding 121,897,160