Quarterly Financial Data (Unaudited) - Additional Information (Details) - Tiffany & Co. - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
Jan. 31, 2020	Jan. 31, 2020
Business Acquisition [Line Items]
Pre-tax expense	$ 21.2	$ 21.2
After tax expense		$ 17.1
Income tax expense (benefit) per diluted share (usd per share)		$ 0.14

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration