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Stockholders' Equity (Tables) | 12 Months Ended
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Apr. 24, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Activity Related to Stock Options | The following table summarizes activity related to our stock options (in millions, except for exercise price and contractual term):
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
Outstanding at April 27, 2012 |  |  | 20.6 |  |  | $ | 29.98 |  |  |  |  |  |  |  |  |
Granted |  |  | 2.4 |  |  | $ | 28.87 |  |  |  |  |  |  |  |  |
Exercised |  |  | (3.0 | ) |  | $ | 18.37 |  |  |  |  |  |  |  |  |
Forfeited and expired |  |  | (0.8 | ) |  | $ | 40.11 |  |  |  |  |  |  |  |  |
Outstanding at April 26, 2013 |  |  | 19.2 |  |  | $ | 31.27 |  |  |  |  |  |  |  |  |
Granted |  |  | 2.9 |  |  | $ | 38.26 |  |  |  |  |  |  |  |  |
Exercised |  |  | (6.3 | ) |  | $ | 25.83 |  |  |  |  |  |  |  |  |
Forfeited and expired |  |  | (1.3 | ) |  | $ | 42.47 |  |  |  |  |  |  |  |  |
Outstanding as of April 25, 2014 |  |  | 14.5 |  |  | $ | 34.10 |  |  |  |  |  |  |  |  |
Granted |  |  | 2.2 |  |  | $ | 36.64 |  |  |  |  |  |  |  |  |
Exercised |  |  | (4.6 | ) |  | $ | 25.25 |  |  |  |  |  |  |  |  |
Forfeited and expired |  |  | (0.6 | ) |  | $ | 42.42 |  |  |  |  |  |  |  |  |
Outstanding as of April 24, 2015 |  |  | 11.5 |  |  | $ | 37.74 |  |  |  | 3.70 |  |  | $ | 29.8 |
Vested and expected to vest as of April 24, 2015 |  |  | 11.1 |  |  | $ | 37.78 |  |  |  | 3.63 |  |  | $ | 29.5 |
Exercisable as of April 24, 2015 |  |  | 7.9 |  |  | $ | 38.32 |  |  |  | 2.89 |  |  | $ | 26.1 |
Additional Information Related to Stock Options | Additional information related to our stock options is summarized below (in millions):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Intrinsic value of exercises |  | $ | 69.9 |  |  | $ | 90.7 |  |  | $ | 46.1 |
Proceeds received from exercises |  | $ | 116.6 |  |  | $ | 163.7 |  |  | $ | 56.5 |
Fair value of options vested |  | $ | 33.4 |  |  | $ | 45.3 |  |  | $ | 55.9 |
Activity Related to Restricted Stock Units (RSUs) | The following table summarizes activity related to our RSUs (in millions, except for fair value):
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |
Outstanding at April 27, 2012 |  |  | 12.0 |  |  | $ | 43.28 |
Granted |  |  | 6.0 |  |  | $ | 29.94 |
Vested |  |  | (4.0 | ) |  | $ | 39.83 |
Forfeited |  |  | (1.2 | ) |  | $ | 40.95 |
Outstanding at April 26, 2013 |  |  | 12.8 |  |  | $ | 38.36 |
Granted |  |  | 6.5 |  |  | $ | 38.61 |
Vested |  |  | (4.5 | ) |  | $ | 38.48 |
Forfeited |  |  | (1.6 | ) |  | $ | 39.08 |
Outstanding as of April 25, 2014 |  |  | 13.2 |  |  | $ | 38.35 |
Granted |  |  | 6.5 |  |  | $ | 35.80 |
Vested |  |  | (4.7 | ) |  | $ | 40.14 |
Forfeited |  |  | (1.7 | ) |  | $ | 37.48 |
Outstanding as of April 24, 2015 |  |  | 13.3 |  |  | $ | 36.58 |
Number and Value of the Shares Netted for Employee Taxes | The number and value of the shares netted for employee taxes are summarized in the table below (in millions):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Shares withheld for taxes |  |  | 1.5 |  |  |  | 1.5 |  |  |  | 1.3 |
Fair value of shares withheld |  | $ | 56.8 |  |  | $ | 57.7 |  |  | $ | 40.9 |
Schedule of Employee Stock Purchase Plan (ESPP) Disclosures | The following table summarizes activity related to the purchase rights issued under the ESPP (in millions):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Shares issued under the ESPP |  |  | 3.4 |  |  |  | 3.8 |  |  |  | 3.8 |
Proceeds from issuance of shares |  | $ | 97.1 |  |  | $ | 95.5 |  |  | $ | 95.0 |
Stock-Based Compensation Expense | Stock-based compensation expense is included in the consolidated statements of operations as follows (in millions):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Cost of product revenues |  | $ | 5.8 |  |  | $ | 5.6 |  |  | $ | 6.1 |
Cost of hardware maintenance and other services revenues |  |  | 16.0 |  |  |  | 16.7 |  |  |  | 19.4 |
Sales and marketing |  |  | 116.5 |  |  |  | 125.0 |  |  |  | 132.2 |
Research and development |  |  | 84.1 |  |  |  | 87.7 |  |  |  | 84.1 |
General and administrative |  |  | 36.9 |  |  |  | 38.0 |  |  |  | 34.8 |
Total stock-based compensation expense |  | $ | 259.3 |  |  | $ | 273.0 |  |  | $ | 276.6 |
Income Tax Effects Associated with Employee Stock Transactions | Total income tax benefit associated with employee stock transactions and recognized in stockholders’ equity were as follows (in millions):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Income tax benefit associated with employee stock transactions |  | $ | 56.9 |  |  | $ | 40.5 |  |  | $ | 53.8 |
Summary of Valuation Assumptions | The valuation of stock options, RSUs and ESPP purchase rights and the underlying weighted-average assumptions are summarized as follows:
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Stock options: |  |  |  |  |  |  |  |  |  |  |  |
Expected term in years |  |  | 4.8 |  |  |  | 4.8 |  |  |  | 4.8 |
Risk-free interest rate |  |  | 1.6 | % |  |  | 1.1 | % |  |  | 0.6 | %
Expected volatility |  |  | 29 | % |  |  | 34 | % |  |  | 41 | %
Expected dividend yield |  |  | 1.8 | % |  |  | 1.6 | % |  |  | — | %
Weighted-average fair value per share granted |  | $ | 8.24 |  |  | $ | 9.85 |  |  | $ | 11.52 |
RSUs: |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  | 0.6 | % |  |  | 0.5 | % |  | N/A |
Expected dividend yield |  |  | 1.8 | % |  |  | 1.6 | % |  |  | — | %
Weighted-average fair value per share granted |  | $ | 35.80 |  |  | $ | 38.61 |  |  | $ | 29.94 |
ESPP: |  |  |  |  |  |  |  |  |  |  |  |
Expected term in years |  |  | 1.3 |  |  |  | 1.2 |  |  |  | 1.2 |
Risk-free interest rate |  |  | 0.2 | % |  |  | 0.2 | % |  |  | 0.2 | %
Expected volatility |  |  | 27 | % |  |  | 31 | % |  |  | 40 | %
Expected dividend yield |  |  | 1.8 | % |  |  | 1.6 | % |  |  | — | %
Weighted-average fair value per right granted |  | $ | 9.81 |  |  | $ | 10.83 |  |  | $ | 10.36 |
Summary of Activities Related to Stock Repurchase Program | The following table summarizes activity related to this program (in millions, except per share information):
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |
Number of shares repurchased |  |  | 29.6 |  |  |  | 47.3 |  |  |  | 18.1 |
Average price per share |  | $ | 39.30 |  |  | $ | 39.78 |  |  | $ | 32.68 |
Aggregate purchase price |  | $ | 1,165.2 |  |  | $ | 1,881.5 |  |  | $ | 590.0 |
Remaining authorization at end of period |  | $ | 2,459.5 |  |  | $ | 1,124.8 |  |  | $ | 1,406.3 |
Summary of Activities Related to Dividends on Common Stock | The following is a summary of our fiscal 2015 and 2014 activities related to dividends on our common stock (in millions, except per share amounts). No dividends were declared or paid in fiscal 2013.
|  | Year Ended |
|  | April 24, 2015 |  |  | April 25, 2014 |
Dividends per share declared |  | $ | 0.66 |  |  | $ | 0.60 |
Dividend payments allocated to additional paid-in capital |  | $ | 52.0 |  |  | $ | 50.4 |
Dividend payments allocated to retained earnings |  | $ | 155.4 |  |  | $ | 151.9 |
Accumulated Other Comprehensive Income (Loss) by Component Net of Tax | Changes in AOCI by component, net of tax, are summarized below (in millions):
|  | Foreign Currency Translation Adjustments |  |  | Defined Benefit Obligation Adjustments |  |  | Unrealized Gains on Available- for-Sale Securities |  |  | Unrealized Gains (Losses) on Derivatives Instruments |  |  | Total |
Balance as of April 26, 2013 |  | $ | 2.0 |  |  | $ | (5.7 | ) |  | $ | 11.4 |  |  | $ | 1.0 |  |  | $ | 8.7 |
OCI before reclassifications, net of tax |  |  | 3.5 |  |  |  | 0.5 |  |  |  | (1.2 | ) |  |  | (3.5 | ) |  |  | (0.7 | )
Amounts reclassified from AOCI, net of tax |  |  | — |  |  |  | 0.4 |  |  |  | (1.3 | ) |  |  | 2.0 |  |  |  | 1.1 |
Total OCI |  |  | 3.5 |  |  |  | 0.9 |  |  |  | (2.5 | ) |  |  | (1.5 | ) |  |  | 0.4 |
Balance as of April 25, 2014 |  |  | 5.5 |  |  |  | (4.8 | ) |  |  | 8.9 |  |  |  | (0.5 | ) |  |  | 9.1 |
OCI before reclassifications, net of tax |  |  | (28.3 | ) |  |  | (7.8 | ) |  |  | 2.3 |  |  |  | 15.5 |  |  |  | (18.3 | )
Amounts reclassified from AOCI, net of tax |  |  | — |  |  |  | 0.2 |  |  |  | (0.3 | ) |  |  | (14.4 | ) |  |  | (14.5 | )
Total OCI |  |  | (28.3 | ) |  |  | (7.6 | ) |  |  | 2.0 |  |  |  | 1.1 |  |  |  | (32.8 | )
Balance as of April 24, 2015 |  | $ | (22.8 | ) |  | $ | (12.4 | ) |  | $ | 10.9 |  |  | $ | 0.6 |  |  | $ | (23.7 | )
Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) | The amounts reclassified out of AOCI are as follows (in millions):
|  | Year Ended |  |  |
|  | April 24, 2015 |  |  | April 25, 2014 |  |  | April 26, 2013 |  |  |
|  | Amounts Reclassified from AOCI |  |  | Statements of Operations Location
Recognized losses on defined benefit obligations |  | $ | 0.2 |  |  | $ | 0.4 |  |  | $ | — |  |  | Operating expenses
Realized gains on available-for-sale securities |  |  | (0.3 | ) |  |  | (1.3 | ) |  |  | (0.6 | ) |  | Other income (expense), net
Realized (gains) losses on cash flow hedges |  |  | (14.4 | ) |  |  | 2.0 |  |  |  | (2.2 | ) |  | Net revenues
Total reclassifications |  | $ | (14.5 | ) |  | $ | 1.1 |  |  | $ | (2.8 | ) |  |

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