Acquisition of Donna Karan International (Parentheticals) (Details) - USD ($) $ in Millions	Jul. 31, 2017	Jan. 31, 2017
Business Acquisition [Line Items]
Debt discount	$ 10.8	$ 11.9
Donna Karan International Inc. ("DKI")
Business Acquisition [Line Items]
Debt discount	$ 40.0

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant