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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary Of Share-Based Compensation Expense | Total share-based compensation expense related to the Company's employee stock options, restricted stock units, stock grant awards and ESPP for the years ended December 31, 2016, 2015 and 2014 was comprised as follows (in millions):
|  | Year Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Cost of revenues |  | $ | 8.0 |  |  | $ | 7.7 |  |  | $ | 6.8 |
Research and development |  | 11.1 |  |  | 9.2 |  |  | 8.7 |
Selling and marketing |  | 9.8 |  |  | 8.5 |  |  | 8.1 |
General and administrative |  | 27.2 |  |  | 21.5 |  |  | 22.2 |
Share-based compensation expense before income taxes |  | 56.1 |  |  | 46.9 |  |  | 45.8 |
Related income tax benefits (1) |  | — |  |  | — |  |  | — |
Share-based compensation expense, net of taxes |  | $ | 56.1 |  |  | $ | 46.9 |  |  | $ | 45.8 |
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(1) | A majority of the Company’s share-based compensation relates to its domestic subsidiaries; therefore, no related deferred income tax benefits are recorded due to historical net operating losses at those subsidiaries.
Summary Of Stock Option Plans | A summary of stock option transactions for all stock option plans follows (in millions except per share and contractual term data):
|  | Year Ended December 31, 2016
|  | Number of Shares |  | Weighted-Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Outstanding at December 31, 2015 |  | 5.2 |  |  | $ | 7.85 |  |  |  |  |
Granted |  | — |  |  | — |  |  |  |  |
Exercised |  | (1.8 | ) |  | 8.03 |  |  |  |  |
Canceled |  | (0.1 | ) |  | 8.53 |  |  |  |  |
Outstanding at December 31, 2016 |  | 3.3 |  |  | $ | 7.75 |  |  | 1.78 |  | $ | 16.7 |
Exercisable at December 31, 2016 |  | 3.3 |  |  | $ | 7.75 |  |  | 1.78 |  | $ | 16.7 |
Additional Information On Stock Options Outstanding | Additional information about stock options outstanding at December 31, 2016 with exercise prices less than or above $12.76 per share, the closing price of the Company's common stock at December 31, 2016, follows (number of shares in millions):
|  | Exercisable |  | Unexercisable |  | Total
Exercise Prices |  | Number of Shares |  | Weighted Average Exercise Price |  | Number of Shares |  | Weighted Average Exercise Price |  | Number of Shares |  | Weighted Average Exercise Price
Less than $12.76 |  | 3.3 |  |  | $ | 7.75 |  |  | — |  |  | $ | — |  |  | 3.3 |  |  | $ | 7.75 |
Above $12.76 |  | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
Total outstanding |  | 3.3 |  |  | $ | 7.75 |  |  | — |  |  | $ | — |  |  | 3.3 |  |  | $ | 7.75 |
Summary Of Restricted Stock Units Transactions | A summary of the restricted stock unit transactions for the year ended December 31, 2016 follows (number of shares in millions):
|  | Number of Shares |  | Weighted-Average Grant Date Fair Value
Nonvested shares of restricted stock units at December 31, 2015 |  | 8.5 |  |  | $ | 10.52 |
Granted |  | 6.2 |  |  | 9.50 |
Achieved |  | — |  |  | — |
Released |  | (4.3 | ) |  | 9.80 |
Canceled |  | (0.7 | ) |  | 11.75 |
Nonvested shares of restricted stock units at December 31, 2016 |  | 9.7 |  |  | $ | 10.10 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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