Debt Commercial Paper Program (Details) $ in Millions	12 Months Ended
Jan. 31, 2018 USD ($)
Short-term Debt [Line Items]
Commercial Paper, Maximum Borrowing Capacity	$ 750.0
Commercial Paper & Credit Facilities borrowing capacity	$ 750.0

The aggregate amount of borrowings that the Company is currently authorized to have outstanding under the Commercial Paper Program and the Registrant's four-year and five-year multi-bank, multi-currency, committed unsecured revolving credit facilities.

No definition available.

Name:	tif_CommercialPaperCreditFacilitiesborrowingcapacity
Namespace Prefix:	tif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration