Equity and Incentive Compensation Plans - Summary of Restricted Stock Activity (Parenthetical) (Detail) (Performance-Based Restricted Stock Awards)	3 Months Ended	9 Months Ended
Nov. 01, 2014	Nov. 01, 2014 Minimum	Nov. 01, 2014 Maximum
Share Based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards annual vesting period	3 years
Percentage grantees earn of the value granted with respect to each tranche of the grant		50.00%	200.00%

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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