Acquisition of Donna Karan International (Parentheticals) (Details) - Donna Karan International Inc. ("DKI") $ in Millions	3 Months Ended	9 Months Ended
Oct. 31, 2017 USD ($)	Oct. 31, 2017 USD ($)
Business Acquisition [Line Items]
Debt discount	$ 40.0	$ 40.0
Reduction in Goodwill due to unrecorded indemnification assets	$ 1.3	$ 7.8

Amount, after accumulated amortization, of debt discount.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant