|
Stock-Based Compensation And Employee Benefit Plans (Tables)
|
12 Months Ended |
|
Mar. 31, 2015
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Schedule Of Assumptions Used In The Black-Scholes Valuation Model |
| | | | | | | | | | | | | | | | | | | | | | Stock Option Grants | | ESPP | | | Year Ended March 31, | | Year Ended March 31, | | | 2015 | | 2014 | | 2013 | | 2015 | | 2014 | | 2013 | Risk-free interest rate | | 1.1 - 1.9% |
| | 1.6 | % | | 0.4 - 1.0% |
| | .04 - 0.2% |
| | 0.1 | % | | 0.1 - 0.2% |
| Expected volatility | | 36 - 40% |
| | 37 - 42% |
| | 40 - 46% |
| | 30 - 35% |
| | 36 - 38% |
| | 35 - 42% |
| Weighted-average volatility | | 38 | % | | 37 | % | | 43 | % | | 34 | % | | 38 | % | | 38 | % | Expected term | | 4.5 years |
| | 4.5 years |
| | 4.4 years |
| | 6 - 12 months |
| | 6 - 12 months |
| | 6 - 12 months |
| Expected dividends | | None |
| | None |
| | None |
| | None |
| | None |
| | None |
|
|
| Schedule Of Assumptions Used In Monte-Carlo Simulation Model |
The estimated assumptions used in the Monte-Carlo simulation model to value our market-based restricted stock units were as follows: | | | | | | | | | | | Year Ended
March 31, 2015 | | Year Ended
March 31, 2014 | | Year Ended
March 31, 2013 | Risk-free interest rate | 0.9 | % | | 0.4 | % | | 0.2 -0.4% |
| Expected volatility | 16 - 79% |
| | 16 - 58% |
| | 17 - 116% |
| Weighted-average volatility | 30 | % | | 31 | % | | 35 | % | Expected dividends | None |
| | None |
| | None |
|
|
| Schedule Of Stock-Based Compensation Expense By Statement Of Operations |
The following table summarizes stock-based compensation expense resulting from stock options, restricted stock, restricted stock units, performance-based restricted stock units, market-based restricted stock units, and the ESPP included in our Consolidated Statements of Operations (in millions): | | | | | | | | | | | | | | | | Year Ended March 31, | | | 2015 | | 2014 | | 2013 | Cost of revenue | | $ | 2 |
| | $ | 2 |
| | $ | 2 |
| Research and development | | 82 |
| | 90 |
| | 94 |
| Marketing and sales | | 21 |
| | 26 |
| | 30 |
| General and administrative | | 39 |
| | 32 |
| | 38 |
| Stock-based compensation expense | | $ | 144 |
| | $ | 150 |
| | $ | 164 |
|
|
| Summary Of Outstanding And Exercisable Stock Options |
The following table summarizes outstanding and exercisable stock options as of March 31, 2015: | | | | | | | | | | | | | | | | | | | | | | | | | | Options Outstanding | | Options Exercisable | Range of Exercise Prices | | Number of Shares (in thousands) | | Weighted- Average Remaining Contractual Term (in years) | | Weighted- Average Exercise Prices | | Potential Dilution | | Number of Shares (in thousands) | | Weighted- Average Exercise Prices | | Potential Dilution | $11.53 - $23.83 | | 752 |
| | 4.49 | | $ | 19.17 |
| | 0.2 | % | | 713 |
| | $ | 19.32 |
| | 0.2 | % | 26.25 - 26.25 | | 1,000 |
| | 8.59 | | 26.25 |
| | 0.3 | % | | 320 |
| | 26.25 |
| | 0.1 | % | 27.49 - 35.70 | | 998 |
| | 9.18 | | 35.43 |
| | 0.3 | % | | 9 |
| | 27.49 |
| | — | % | 36.00 - 49.90 | | 1,242 |
| | 3.31 | | 47.18 |
| | 0.4 | % | | 1,036 |
| | 49.19 |
| | 0.3 | % | 49.96 - 60.59 | | 928 |
| | 1.48 | | 53.41 |
| | 0.3 | % | | 928 |
| | 53.41 |
| | 0.3 | % | $11.53 - $60.59 | | 4,920 |
| | 5.41 | | $ | 37.44 |
| | 1.5 | % | | 3,006 |
| | $ | 40.90 |
| | 0.9 | % |
|
| Shares Repurchased and Retired |
The following table summarizes total shares repurchased and retired during fiscal years 2015 and 2013: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | February 2011 Program | | July 2012 Program | | May 2014 Program | | Total | (In millions) | Shares | | Amount | | Shares | | Amount | | Shares | | Amount | | Shares | | Amount | Fiscal Year 2013 | 4 |
| | $ | 71 |
| | 22 |
| | $ | 278 |
| | — |
| | — |
| | 26 |
| | $ | 349 |
| Fiscal Year 2015 | — |
| | — |
| | — |
| | — |
| | 8 |
| | $ | 337 |
| | 8 |
| | $ | 337 |
|
|
| Employee Stock Option [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award |
The following table summarizes our stock option activity for the fiscal year ended March 31, 2015: | | | | | | | | | | | | | | | | | Options (in thousands) | | Weighted- Average Exercise Prices | | Weighted- Average Remaining Contractual Term (in years) | | Aggregate Intrinsic Value (in millions) | Outstanding as of March 31, 2014 | | 5,311 |
| | $ | 37.43 |
| | | | | Granted | | 1,248 |
| | 35.79 |
| | | | | Exercised | | (1,021 | ) | | 23.76 |
| | | | | Forfeited, cancelled or expired | | (618 | ) | | 56.66 |
| | | | | Outstanding as of March 31, 2015 | | 4,920 |
| | $ | 37.44 |
| | 5.41 | | $ | 102 |
| Vested and expected to vest | | 4,612 |
| | $ | 37.82 |
| | 5.17 | | $ | 94 |
| Exercisable as of March 31, 2015 | | 3,006 |
| | $ | 40.90 |
| | 3.14 | | $ | 52 |
|
|
| Restricted Stock Rights [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award |
The following table summarizes our restricted stock rights activity, excluding performance-based restricted stock unit activity which is discussed below, for the fiscal year ended March 31, 2015: | | | | | | | | | | | Restricted Stock Rights (in thousands) | | Weighted- Average Grant Date Fair Values | Balance as of March 31, 2014 | | 13,536 |
| | $ | 19.70 |
| Granted | | 4,496 |
| | 37.22 |
| Vested | | (5,727 | ) | | 20.13 |
| Forfeited or cancelled | | (1,450 | ) | | 23.64 |
| Balance as of March 31, 2015 | | 10,855 |
| | $ | 26.20 |
|
|
| Performance Based Restricted Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award |
The following table summarizes our performance-based restricted stock unit activity for the fiscal year ended March 31, 2015: | | | | | | | | | | | Performance- Based Restricted Stock Units (in thousands) | | Weighted- Average Grant Date Fair Values | Balance as of March 31, 2014 | | 54 |
| | $ | 15.39 |
| Vested | | (49 | ) | | 15.39 |
| Forfeited or cancelled | | (5 | ) | | 15.39 |
| Balance as of March 31, 2015 | | — |
| | $ | — |
|
|
| Market Based Restricted Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award |
The following table summarizes our market-based restricted stock unit activity for the year ended March 31, 2015: | | | | | | | | | | | Market-Based Restricted Stock Units (in thousands) | | Weighted- Average Grant Date Fair Value | Balance as of March 31, 2014 | | 978 |
| | $ | 24.83 |
| Granted | | 193 |
| | 48.14 |
| Vested | | (671 | ) | | 22.01 |
| Vested above target | | 192 |
| | 17.20 |
| Forfeited or cancelled | | (29 | ) | | 34.77 |
| Balance as of March 31, 2015 | | 663 |
| | $ | 31.82 |
|
|