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Organization and Summary of Significant Accounting Policies Advertising expenses (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
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Jan. 28, 2017 | Oct. 29, 2016 | Jul. 30, 2016 | Apr. 30, 2016 | Jan. 30, 2016 | Oct. 31, 2015 | Aug. 01, 2015 | May 02, 2015 | Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross advertising and promotional costs |  |  |  |  |  |  |  |  | $ 1,547 | $ 1,587 | $ 1,602
Cooperative advertising allowances |  |  |  |  |  |  |  |  | 394 | 414 | 425
Advertising and promotional costs, net of cooperative advertising allowances |  |  |  |  |  |  |  |  | 1,153 | 1,173 | 1,177
Net sales | $ 8,515 | $ 5,626 | $ 5,866 | $ 5,771 | $ 8,869 | $ 5,874 | $ 6,104 | $ 6,232 | $ 25,778 | $ 27,079 | $ 28,105
Advertising expense as a percent to sales |  |  |  |  |  |  |  |  | 4.50% | 4.30% | 4.20%

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- Definition Gross expense recognized in the period for promotion, public relation and brand or produce advertising, including amouns received by an entity from a vendor under a cooperative advertising arrangement. + References No definition available. + Details
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- Definition Total amount received by an entity from a vendor under a cooperative advertising arrangement that has been offset against advertising expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 50 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=68069731&loc=d3e63872-111659 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cooperative Advertising -URI http://asc.fasb.org/extlink&oid=51574790 + Details
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- Definition The total expense recognized in the period for promotion, public relations, and brand or product advertising. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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