| Accounting Changes [Text Block] |
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The change to historical periods was limited to classifications within the consolidated statements of operations and has no effect on net income or earnings per share.
| | | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended | | Fiscal year ended | | | January 31, 2015 | | January 31, 2015 | | | | As previously reported | | Effect of change | | As adjusted | | As previously reported | | Effect of change | | As adjusted | | | | (in thousands) | Operating expenses | | $ | (128,681 | ) | | $ | 201 |
| | $ | (128,480 | ) | | $ | (512,889 | ) | | $ | 353 |
| | $ | (512,536 | ) | Interest income, net | | 602 |
| | 132 |
| | 734 |
| | 2,795 |
| | 326 |
| | 3,121 |
| Income tax provision | | (19,527 | ) | | (333 | ) | | (19,860 | ) | | (95,713 | ) | | (679 | ) | | (96,392 | ) |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | Three months ended | | Fiscal year ended | | | February 1, 2014 | | February 1, 2014 | | | | As previously reported | | Effect of change | | As adjusted | | As previously reported | | Effect of change | | As adjusted | | | | (in thousands) | Operating expenses | | $ | (115,113 | ) | | $ | — |
| | $ | (115,113 | ) | | $ | (497,899 | ) | | $ | 36 |
| | $ | (497,863 | ) | Interest income, net | | 762 |
| | 42 |
| | 804 |
| | 2,619 |
| | (182 | ) | | 2,437 |
| Income tax provision | | (17,521 | ) | | (42 | ) | | (17,563 | ) | | (92,705 | ) | | 146 |
| | (92,559 | ) |
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| New Accounting Pronouncements and Changes in Accounting Principles [Text Block] |
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The change in accounting standard has been applied retrospectively by adjusting the balance sheet for the prior period presented. | | | | | | | | | | | | | | | | As of January 31, 2015 | | | As previously reported | | Effect of change | | As adjusted | | | | (in thousands) | Current deferred income taxes | | $ | 19,747 |
| | $ | (19,747 | ) | | $ | — |
| Total current assets | | 768,470 |
| | (19,747 | ) | | 748,723 |
| Non-current deferred income taxes | | 11,332 |
| | 19,747 |
| | 31,079 |
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