Amount of expense for amortization of capitalized computer software costs.

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Unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility through to the general release of the software products. Excludes capitalized costs of developing software for internal use.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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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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INTERIM UPDATE TO SUMMARY SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	2 Months Ended	9 Months Ended
	Oct. 28, 2016	Oct. 28, 2016	Jan. 29, 2016
Subsidiary, Sale of Stock [Line Items]
Capitalized software development costs	$ 85.0	$ 85.0
Amortization of capitalized software development costs	0.4
Debt issuance costs	$ 805.0	$ 805.0	$ 128.0
Accounting Standards Update 2015-03
Subsidiary, Sale of Stock [Line Items]
Debt issuance costs			$ 128.0
SecureWorks
Subsidiary, Sale of Stock [Line Items]
Ownership percent in non-controlling interest	87.50%	87.50%
VMware
Subsidiary, Sale of Stock [Line Items]
Ownership percent in non-controlling interest	83.30%	83.30%
Pivotal
Subsidiary, Sale of Stock [Line Items]
Ownership percent in non-controlling interest	77.40%	77.40%
Minimum \| Software Development
Subsidiary, Sale of Stock [Line Items]
Capitalized software development, economic life		18 months
Maximum \| Software Development
Subsidiary, Sale of Stock [Line Items]
Capitalized software development, economic life		2 years