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Share-Based Compensation (Tables) | 12 Months Ended
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Jun. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Share-Based Compensation Awards Available for Grant or Issuance | Share-based compensation awards available for grant or issuance for each plan as of the beginning of the fiscal year, including changes in the balance of awards available for grant for fiscal 2018, were as follows:
|  | Awards |  |  |  |  |  |  |  |  |  |  | 2010 |
|  | Available |  |  | 2001 |  |  | 2010 |  |  | Employee |
|  | Under All |  |  | Incentive |  |  | Incentive |  |  | Stock |
|  | Share-Based |  |  | Compensation |  |  | Compensation |  |  | Purchase |
|  | Award Plans |  |  | Plan |  |  | Plan |  |  | Plan |
Balance at June 2017 |  |  | 2,947,069 |  |  |  | — |  |  |  | 2,566,899 |  |  |  | 380,170 |
Additional shares authorized |  |  | 2,346,384 |  |  |  | — |  |  |  | 2,000,000 |  |  |  | 346,384 |
Stock options granted |  |  | (61,825 | ) |  |  | — |  |  |  | (61,825 | ) |  |  | — |
Deferred stock units granted |  |  | (1,331,073 | ) |  |  | — |  |  |  | (1,331,073 | ) |  |  | — |
Market stock units granted |  |  | (300,071 | ) |  |  | — |  |  |  | (300,071 | ) |  |  | — |
Performance stock units granted |  |  | (315,380 | ) |  |  | — |  |  |  | (315,380 | ) |  |  | — |
Market stock units performance adjustment |  |  | 68,003 |  |  |  | — |  |  |  | 68,003 |  |  |  | — |
Purchases under employee stock purchase plan |  |  | (486,263 | ) |  |  | — |  |  |  | — |  |  |  | (486,263 | )
Forfeited |  |  | 692,035 |  |  |  | 4,500 |  |  |  | 687,535 |  |  |  | — |
Plan shares expired |  |  | (4,500 | ) |  |  | (4,500 | ) |  |  | — |  |  |  | — |
Fungible Shares Ratio Adjustment |  |  | (1,344,162 | ) |  |  | — |  |  |  | (1,344,162 | ) |  |  | — |
Balance at June 2018 |  |  | 2,210,217 |  |  |  | — |  |  |  | 1,969,926 |  |  |  | 240,291 |
Share-Based Compensation and Related Tax Benefit Recognized in Consolidated Statements of Income | Share-based compensation and the related tax benefit recognized in our consolidated statements of income for fiscal 2018, 2017, and 2016 were as follows (in millions):
|  | 2018 |  |  | 2017 |  |  | 2016 |
Cost of revenue |  | $ | 3.2 |  |  | $ | 2.2 |  |  | $ | 1.8 |
Research and development |  |  | 38.6 |  |  |  | 33.1 |  |  |  | 30.6 |
Selling, general, and administrative |  |  | 29.5 |  |  |  | 26.5 |  |  |  | 24.4 |
Total |  | $ | 71.3 |  |  | $ | 61.8 |  |  | $ | 56.8 |
Income tax benefit on share-based compensation |  | $ | 11.1 |  |  | $ | 16.1 |  |  | $ | 14.7 |
Balance of Outstanding and Exercisable Stock Options | Certain stock option activity for fiscal 2018 and balances as of the end of fiscal 2018 were as follows:
|  | Stock |  |  | Weighted |  |  |  |  |
|  | Option |  |  | Average |  |  | Intrinsic |
|  | Awards |  |  | Exercise |  |  | Value |
|  | Outstanding |  |  | Price |  |  | (In millions) |
Balance at June 2017 |  |  | 2,490,168 |  |  | $ | 49.20 |  |  |  |  |
Granted |  |  | 61,825 |  |  |  | 45.32 |  |  |  |  |
Exercised |  |  | (690,310 | ) |  |  | 24.08 |  |  |  |  |
Forfeited |  |  | (105,124 | ) |  |  | 59.36 |  |  |  |  |
Expired |  |  | (138,350 | ) |  |  | 72.08 |  |  |  |  |
Balance at June 2018 |  |  | 1,618,209 |  |  |  | 57.14 |  |  | $ | 9.2 |
Exercisable at June 2018 |  |  | 1,378,833 |  |  |  | 57.09 |  |  | $ | 8.9 |
Cash Received and Aggregate Intrinsic Value of Stock Options Exercised | Cash received and the aggregate intrinsic value of stock options exercised for fiscal 2018, 2017, and 2016 were as follows (in millions):
|  | 2018 |  |  | 2017 |  |  | 2016 |
Cash received |  | $ | 16.7 |  |  | $ | 10.7 |  |  | $ | 16.6 |
Aggregate intrinsic value |  | $ | 15.2 |  |  | $ | 12.3 |  |  | $ | 29.7 |
Shares Purchased, Weighted Average Purchase Price, Cash Received, and Aggregate Intrinsic Value for ESPP | Shares purchased, weighted average purchase price, cash received, and the aggregate intrinsic value for employee stock purchase plan purchases in fiscal 2018, 2017, and 2016 were as follows (in millions, except shares purchased and weighted average purchase price):
|  | 2018 |  |  | 2017 |  |  | 2016 |
Shares purchased |  |  | 486,263 |  |  |  | 302,085 |  |  |  | 302,781 |
Weighted average purchase price |  | $ | 32.07 |  |  | $ | 46.74 |  |  | $ | 52.42 |
Cash received |  | $ | 15.6 |  |  | $ | 14.1 |  |  | $ | 15.8 |
Aggregate intrinsic value |  | $ | 3.9 |  |  | $ | 2.7 |  |  | $ | 7.0 |
Fair Value of Each Award Granted under ESPP | The fair value of each award granted under our 2010 ESPP for fiscal 2018, 2017, and 2016 was estimated using the Black-Scholes option pricing model, assuming no expected dividends and the following range of assumptions:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Expected volatility |  | 43.7 - 49.8% |  |  | 38.4 - 54.9% |  |  | 37.4% - 40.6% |
Expected life in years |  | 0.5 - 2.0 |  |  | 0.5 - 2.0 |  |  | 0.5 - 1.0 |
Risk-free interest rate |  | 1.42% - 2.45% |  |  | 0.62% - 1.20% |  |  | 0.33% - 0.54% |
Fair value per award |  | $ | 13.54 |  |  | $ | 20.44 |  |  | $ | 24.52 |
Market stock units outstanding [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Balance and Aggregate Intrinsic Value of Stock Units | MSU activity, including MSUs granted, delivered, and forfeited in fiscal 2018, and the balance and aggregate intrinsic value of MSUs as of the end of fiscal 2018 were as follows:
|  |  |  |  |  | Aggregate |  |  | Weighted |
|  |  |  |  |  | Intrinsic |  |  | Average |
|  | MSU Awards |  |  | Value |  |  | Grant Date |
|  | Outstanding |  |  | (in millions) |  |  | Fair Value |
Balance at June 30, 2017 |  |  | 158,596 |  |  |  |  |  |  | $ | 82.88 |
Granted |  |  | 300,071 |  |  |  |  |  |  |  | 53.02 |
Performance adjustment |  |  | (68,003 | ) |  |  |  |  |  |  | — |
Delivered |  |  | — |  |  |  |  |  |  |  | — |
Forfeited |  |  | (35,938 | ) |  |  |  |  |  |  | 76.93 |
Balance at June 30, 2018 |  |  | 354,726 |  |  | $ | 17.9 |  |  |  | 59.37 |
Deferred stock units outstanding [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Balance and Aggregate Intrinsic Value of Stock Units | DSU activity, including DSUs granted, delivered, and forfeited in fiscal 2018, and the balance and aggregate intrinsic value of DSUs as of the end of fiscal 2018 were as follows:
|  |  |  |  |  | Aggregate |  |  | Weighted |
|  |  |  |  |  | Intrinsic |  |  | Average |
|  | DSU Awards |  |  | Value |  |  | Grant Date |
|  | Outstanding |  |  | (in millions) |  |  | Fair Value |
Balance at June 30, 2017 |  |  | 1,320,798 |  |  |  |  |  |  | $ | 69.14 |
Granted |  |  | 1,331,073 |  |  |  |  |  |  |  | 40.52 |
Delivered |  |  | (545,028 | ) |  |  |  |  |  |  | 70.26 |
Forfeited |  |  | (253,285 | ) |  |  |  |  |  |  | 58.42 |
Balance at June 30, 2018 |  |  | 1,853,558 |  |  | $ | 93.4 |  |  |  | 49.75 |
Stock Option Plans [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair Value of Each Award Granted | The fair value of each award granted under our share-based compensation plans for fiscal 2018, 2017, and 2016 was estimated at the date of grant using the Black-Scholes option pricing model, assuming no expected dividends and the following range of assumptions:
|  | 2018 |  |  | 2017 |  |  | 2016 |
Expected volatility |  | 46.2% |  |  | 45.2% - 48.3% |  |  | 40.4% - 44.2% |
Expected life in years |  | 4.4 |  |  | 3.8 - 4.6 |  |  | 3.8 - 4.6 |
Risk-free interest rate |  | 1.8% |  |  | 1.03% - 1.94% |  |  | 1.22% - 1.72% |
Fair value per award |  | $ | 18.04 |  |  | $ | 21.08 |  |  | $ | 28.30 |
Incentive Compensation Plans [member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair Value of Each Award Granted | The fair value of each MSU granted from our plans for fiscal 2018, 2017, and 2016 was estimated at the date of grant using the Monte Carlo simulation model, assuming no expected dividends and the following assumptions:
|  | 2018 |  | 2017 |  |  | 2016 |  |
Expected volatility of company |  | 49.16% - 50.60% |  |  | 52.54 | % |  |  | 45.57 | % |
Expected volatility of SOX index |  | 22.37% - 22.52% |  |  | 21.23 | % |  |  | 19.65 | % |
Correlation coefficient |  | 0.52 - 0.53 |  |  | 0.45 |  |  |  | 0.42 |  |
Expected life in years |  | 2.80 - 2.92 |  |  | 2.92 |  |  |  | 2.94 |  |
Risk-free interest rate |  | 1.72% - 1.88% |  |  | 1.01 | % |  |  | 0.92 | % |
Fair value per award |  | $48.22 - $59.19 |  | $ | 67.51 |  |  | $ | 126.74 |  |

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