Income Tax Disclosure [Abstract] | Period [Axis] |
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2016-02-01 - 2017-01-31 |
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Income Tax Disclosure [Abstract] | |
Components of Income (Loss) before Provision for Income Taxes | The components of loss before provision for income taxes were as follows (in thousands): | | | | | | | | | | | | | | Year Ended January 31, | | 2017 | | 2016 | | 2015 | Domestic | $ | (205,570 | ) | | $ | (90,831 | ) | | $ | (93,619 | ) | Foreign | (203,522 | ) | | (198,070 | ) | | (152,353 | ) | Total | $ | (409,092 | ) | | $ | (288,901 | ) | | $ | (245,972 | ) |
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Summary of Provision (Benefit) for Income Taxes | The provision for (benefit from) income taxes consisted of the following (in thousands): | | | | | | | | | | | | | | Year Ended January 31, | | 2017 | | 2016 | | 2015 | Current: | | | | | | Federal | $ | 213 |
| | $ | (2,012 | ) | | $ | 90 |
| State | 17 |
| | 489 |
| | 106 |
| Foreign | 3,573 |
| | 2,869 |
| | 2,128 |
| Total | 3,803 |
| | 1,346 |
| | 2,324 |
| | | | | | | Deferred: | | | | | | Federal | (466 | ) | | — |
| | — |
| State | (52 | ) | | — |
| | — |
| Foreign | (4,099 | ) | | (329 | ) | | (314 | ) | Total | (4,617 | ) | | (329 | ) | | (314 | ) | Provision for (benefit from) income taxes | $ | (814 | ) | | $ | 1,017 |
| | $ | 2,010 |
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Reconciliation of Income Taxes Computed at Federal Statutory Income Tax Rate and Provision for Income Taxes | The items accounting for the difference between income taxes computed at the federal statutory income tax rate and the provision for (benefit from) income taxes consisted of the following: | | | | | | | | | | | Year Ended January 31, | | 2017 | | 2016 | | 2015 | Federal statutory rate | 35.0 | % | | 35.0 | % | | 35.0 | % | Effect of: | | | | | | Foreign income at other than U.S. rates | (18.1 | )% | | (24.7 | )% | | (22.5 | )% | Intercompany transactions | 4.0 | % | | 4.9 | % | | (0.2 | )% | Research tax credits | 6.0 | % | | 4.9 | % | | 6.9 | % | State taxes, net of federal benefit | — | % | | (0.2 | )% | | (0.1 | )% | Changes in valuation allowance | (20.5 | )% | | (15.8 | )% | | (15.2 | )% | Stock compensation | (5.8 | )% | | (5.1 | )% | | (4.0 | )% | Other | (0.4 | )% | | 0.6 | % | | (0.7 | )% | | 0.2 | % | | (0.4 | )% | | (0.8 | )% |
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Schedule of Deferred Tax Assets and Liabilities | Significant components of our deferred tax assets and liabilities were as follows (in thousands): | | | | | | | | | | January 31, | | 2017 | | 2016 | Deferred tax assets: | | | | Unearned revenue | $ | 45,377 |
| | $ | 35,884 |
| Other reserves and accruals | 23,134 |
| | 21,505 |
| Federal net operating loss carryforwards | 110,974 |
| | 62,580 |
| State and foreign net operating loss carryforwards | 25,783 |
| | 21,521 |
| Property and equipment | 24,754 |
| | 19,518 |
| Share-based compensation | 70,642 |
| | 61,930 |
| Research and development credits | 78,283 |
| | 51,340 |
| Other | 23,209 |
| | 12,892 |
| | 402,156 |
| | 287,170 |
| Valuation allowance | (330,199 | ) | | (222,760 | ) | Deferred tax assets, net of valuation allowance | 71,957 |
| | 64,410 |
| Deferred tax liabilities: | | | | Intangibles | (3,742 | ) | | — |
| Intercompany transactions | (62,800 | ) | | (62,951 | ) | Other prepaid assets | (1,079 | ) | | (898 | ) | | (67,621 | ) | | (63,849 | ) | Net deferred tax assets | $ | 4,336 |
| | $ | 561 |
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Summary of Reconciliation of Gross Unrecognized Tax Benefit | A reconciliation of the gross unrecognized tax benefit is as follows (in thousands): | | | | | | | | | | | | | | Year Ended January 31, | | 2017 | | 2016 | | 2015 | Unrecognized tax benefits at the beginning of the period | $ | 98,460 |
| | $ | 88,663 |
| | $ | 77,090 |
| Additions for tax positions taken in prior years | 3,981 |
| | 2,818 |
| | 3,946 |
| Reductions for tax positions taken in prior years | — |
| | (881 | ) | | (49 | ) | Additions for tax positions related to the current year | 14,475 |
| | 9,144 |
| | 7,676 |
| Reductions related to a lapse of applicable statute of limitations | (115 | ) | | (1,284 | ) | | — |
| Unrecognized tax benefits at the end of the period | $ | 116,801 |
| | $ | 98,460 |
| | $ | 88,663 |
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