Receivables and Revenue Recognition - Receivables (Details) - USD ($) $ in Millions	Oct. 31, 2018	Jan. 31, 2018	Oct. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit receivables	$ 79.9		$ 62.6
Credit receivables, current (as a percentage)	97.00%		95.00%
Allowance for doubtful accounts for estimated losses associated with the credit receivables	$ 1.1		$ 1.2
Accounts receivable allowances	28.3	$ 17.2	$ 11.5
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable allowances	$ 14.5

A valuation allowance for credit card financing receivables that are expected to be uncollectable.

No definition available.

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

- Definition

Financing receivables related to consumer credit cards.

+ References

No definition available.

+ Details

Name:	tif_ConsumerCreditCardFinancingReceivables
Namespace Prefix:	tif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the percentage of current financing receivables derived from dividing current financing receivables by total financing receivables.

+ References

No definition available.

+ Details

Name:	tif_ConsumerCreditCardFinancingReceivablesPercentageCurrent
Namespace Prefix:	tif_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: