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Stock Based Compensation (Tables)
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12 Months Ended |
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Jan. 25, 2015
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| Notes to financial statements [Abstract] |
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| Stock-based compensation expense, net of amounts capitalized as inventory |
| | | | | | | | | | | | | | Year Ended | | January 25,
2015 | | January 26,
2014 | | January 27,
2013 | | (In thousands) | Cost of revenue | $ | 12,022 |
| | $ | 10,688 |
| | $ | 10,490 |
| Research and development | 88,355 |
| | 82,940 |
| | 82,157 |
| Sales, general and administrative | 57,464 |
| | 42,667 |
| | 44,015 |
| Total | $ | 157,841 |
| | $ | 136,295 |
| | $ | 136,662 |
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| Summary of equity awards granted under equity incentive plans |
| | | | | | | | | | | | | | Year Ended | | January 25, |
| January 26, | | January 27, | 2015 |
| 2014 | | 2013 | | (In thousands, except per share data) | Stock Options | | | | | | Awards granted | 86 |
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| 6,149 |
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| 7,119 |
| Estimated total grant-date fair value | $ | 345 |
| | $ | 21,310 |
| | $ | 38,326 |
| Weighted average grant-date fair value (per share) | $ | 4.02 |
| | $ | 3.47 |
| | $ | 5.38 |
| | | | | | | RSUs and PSUs | | | | | | Awards granted | 12,912 |
| | 10,757 |
| | 8,136 |
| Estimated total grant-date fair value | $ | 228,223 |
| | $ | 144,798 |
| | $ | 112,795 |
| Weighted average grant-date fair value (per share) | $ | 17.68 |
| | $ | 13.46 |
| | $ | 13.86 |
| | | | | | | ESPP | | | | | | Shares purchased | 6,672 |
| | 6,124 |
| | 5,463 |
| Weighted average price (per share) | $ | 10.99 |
| | $ | 10.79 |
| | $ | 10.83 |
| Weighted average grant-date fair value (per share) | $ | 4.99 |
| | $ | 5.60 |
| | $ | 5.16 |
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| Summary of unearned stock-based compensation expense |
| | | | | | | | | | January 25, |
| January 26, | | 2015 |
| 2014 | | (In thousands) | Aggregated unearned stock-based compensation expense | $ | 291,416 |
| | $ | 256,500 |
| | | | | Estimated weighted average amortization period | (In years) | Stock Options | 1.8 |
| | 2.5 |
| RSUs and PSUs | 2.8 |
| | 2.7 |
| ESPP | 0.5 |
| | 0.6 |
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| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions |
| | | | | | | | Year Ended | | January 25,
2015 | | January 26,
2014 | | January 27,
2013 | | (Using a binomial model) | Stock Options | | | | | | Weighted average expected life (in years) | 2.5-3.2 | | 2.4-3.5 | | 3.1-4.9 | Risk-free interest rate | 2.5%-2.8% | | 1.8%-3.0% | | 1.5%-2.3% | Volatility | 31% | | 28%-37% | | 39%-49% | Dividend yield | 1.8%-1.9% | | 1.9%-2.4% | | 2.4% |
| | | | | | | | | Year Ended | | January 25,
2015 | | January 26,
2014 | | January 27,
2013 | | (Using the Black-Scholes model) | ESPP | | | | | | Weighted average expected life (in years) | 0.5-2.0 | | 0.5-2.0 | | 0.5-2.0 |
| Risk-free interest rate | 0.1%-0.5% | | 0.1%-0.4% | | 0.1%-0.3% |
| Volatility | 23%-31% | | 32%-37% | | 44%-47% |
| Dividend yield | 1.7%-1.9% | | 2.0%-2.4% | | — |
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| Schedule of Share-based Compensation, Activity |
| | | | | | | | | | | | | | | | | | | | | | Options Outstanding | | RSUs and PSUs Outstanding | | Number of Shares | | Weighted Average Exercise Price Per Share | | Weighted Average Remaining Contractual Life | | Aggregate Intrinsic Value (1) | | Number of Shares | | Weighted Average Grant-Date Fair Value | | (In thousands, except years and per share data) | Balances, January 26, 2014 | 32,504 |
| | $ | 14.22 |
| | | | | | 18,852 |
| | $ | 13.82 |
| Granted (2) | 86 |
| | $ | 18.75 |
| | | | | | 12,912 |
| | $ | 17.68 |
| Exercised | (9,795 | ) | | $ | 12.64 |
| | | | | | — |
| | — |
| Vested restricted stock | — |
| | — |
| | | | | | (7,163 | ) | | $ | 13.78 |
| Canceled and forfeited | (1,450 | ) | | $ | 19.27 |
| | | | | | (1,326 | ) | | $ | 14.44 |
| Balances, January 25, 2015 | 21,345 |
| | $ | 14.61 |
| | 5.9 | | $ | 130,923 |
| | 23,275 |
| | $ | 15.94 |
| Exercisable at January 25, 2015 | 15,120 |
| | $ | 14.70 |
| | 5.1 | | $ | 91,434 |
| | | | | Vested and expected to vest after January 25, 2015 | 20,356 |
| | $ | 14.62 |
| | 5.8 | | $ | 124,575 |
| | 18,988 |
| | $ | 15.96 |
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| | (1) | The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value for in-the-money options at January 25, 2015, based on the $20.71 closing stock price of our common stock on the NASDAQ Global Select Market on January 23, 2015, the last trading day of fiscal year 2015, which would have been received by the option holders had all in-the-money option holders exercised their options as of that date. The total number of in-the-money options outstanding and exercisable as of January 25, 2015 was 21.1 million shares and 14.9 million shares, respectively. |
| | (2) | Includes the total number of PSUs issuable if the maximum corporate financial performance target level for fiscal year 2015 is achieved. Depending on the actual level of achievement of the corporate performance target at the end of fiscal year 2015, the range of PSUs issued could be from 1.3 million to 2.5 million shares. The PSUs were granted during the first quarter of fiscal year 2015 to our CEO and senior management as approved by our Compensation Committee. |
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