Debt - Letters of Credit (Details) $ in Millions	Jan. 31, 2019 USD ($)
Debt Disclosure [Abstract]
Available letters of credit and financial guarantees	$ 77.7
Letters of credit and financial guarantees outstanding	28.3
Letters of credit and financial guarantees, current	$ 64.1

Letters Of Credit And Financial Guarantees Outstanding

No definition available.

Name:	tif_LettersOfCreditAndFinancialGuaranteesOutstanding
Namespace Prefix:	tif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant