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Summary of Target Allocation Guidelines for Plan Assets Along with Actual Allocation of Plan Assets as of Valuation Date (Detail) | 12 Months Ended |
--- | --- | ---
Jan. 30, 2016 | Jan. 31, 2015
Equity Securities |  |
Pension Plans and Other Retirement Benefits [Line Items] |  |
Target Allocation | 50.00% |
Actual Allocation | 40.00% | 44.00%
Fixed Income Securities |  |
Pension Plans and Other Retirement Benefits [Line Items] |  |
Target Allocation | 50.00% |
Actual Allocation | 55.00% | 45.00%
Cash and Cash Equivalents |  |
Pension Plans and Other Retirement Benefits [Line Items] |  |
Actual Allocation | 5.00% | 11.00%

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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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