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Organization and Basis of Presentation (Segment Information) (Details) $ in Millions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2016 | Jan. 28, 2018 | Jan. 29, 2017 | Jan. 31, 2016 | Aug. 05, 2016 USD ($)
Organization And Basis Of Presentation [Line Items] |  |  |  |  |
Number of operating segments | 5 | 4 |  | 5 |
Number of operating segments that aggregate into one reportable segment |  | 4 | 4 | 4 |
Number of reportable segments |  | 1 | 1 | 1 |
Snowbush IP Business [Member] | Systems Innovation [Member] |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |
Cash consideration received for divestiture of business |  |  |  |  | $ 32.0

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- Definition Number of Operating Segments that Aggregate into One Reportable Segment + References No definition available. + Details
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- Definition Organization And Basis Of Presentation [Line Items] + References No definition available. + Details
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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Details
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- Details
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