Document and Entity Information	3 Months Ended
	Apr. 30, 2018 shares
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
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 Common Stock, Shares Outstanding	124,241,267