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Segment Information (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2017	May 01, 2016
Segment Reporting Information [Line Items]
Net revenues related to foreign operations	$ 69.4	$ 69.7
Severance, related charges	5.7	13.2
Long-term assets related to foreign operations	$ 57.9	$ 64.4

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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.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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Amount of long-lived assets located in foreign countries in total in which the entity holds assets.

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Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

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