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Fair Value Measurements (Details 2) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Jan. 30, 2016 | Jan. 31, 2015 | Jan. 28, 2017 | Feb. 01, 2014
Available-for-sale securities |  |  |  |
Accumulated unrealized gains (losses), net of taxes, included in accumulated other comprehensive income (loss) related to available-for-sale securities | $ (158,054,000) | $ (127,065,000) | $ (161,389,000) | $ (13,801,000)
Available-for-sale securities |  |  |  |
Available-for-sale securities |  |  |  |
Proceeds from sale of available-for-sale securities |  | 600,000 |  |
Other income/expense |  |  |  |
Available-for-sale securities |  |  |  |
Other-than-temporary-impairment | 0 | 0 |  |
Other income/expense | Available-for-sale securities |  |  |  |
Available-for-sale securities |  |  |  |
Gains recognized on sale of available-for-sale securities |  | 100,000 |  |
Marketable Securities |  |  |  |
Available-for-sale securities |  |  |  |
Accumulated unrealized gains (losses), net of taxes, included in accumulated other comprehensive income (loss) related to available-for-sale securities | $ (15,000) | $ (3,000) | $ 0 | $ 103,000

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 + Details
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