Stockholders' Equity (Tables)
|
3 Months Ended |
Mar. 31, 2018 |
|---|
| Equity [Abstract] |
|
| Stock Option Activity Under Equity-Based Plans |
The following table summarizes stock option activity under our 2009 Plan for the three months ended March 31, 2018: | | | | | Number
of Shares | Balance at December 31, 2017 | 1,296,863 |
| Exercised | (206,430 | ) | Forfeited | (4,167 | ) | Balance at March 31, 2018 | 1,086,266 |
| Exercisable at March 31, 2018 | 1,011,038 |
|
|
| Restricted Stock Unit and Restricted Stock Award Activity Under Equity-Based Plans |
The following tables summarize restricted stock unit (RSU), performance-based restricted stock unit (PSU), RSA, and PRSA activity under our 2009 Plan for the three months ended March 31, 2018: | | | | | | | | | | | | | RSUs | PSUs | | Number of Units | Weighted-Average Grant Date Fair Value | Number of Units | Weighted-Average Grant Date Fair Value | Nonvested at December 31, 2017 | 2,249,661 |
| $ | 24.83 |
| 453,674 |
| $ | 30.72 |
| Granted | 548,054 |
| 46.97 |
| 23,842 |
| 47.61 |
| Vested | (286,121 | ) | 23.96 |
| (82,066 | ) | 33.51 |
| Forfeited | (88,396 | ) | 25.51 |
| — |
| — |
| Nonvested at March 31, 2018 | 2,423,198 |
| $ | 29.91 |
| 395,450 |
| $ | 30.89 |
|
| | | | | | | | | | | | | RSAs | PRSAs | | Number of Units | Weighted-Average Grant Date Fair Value | Number of Units | Weighted-Average Grant Date Fair Value | Nonvested at December 31, 2017 | — |
| $ | — |
| — |
| $ | — |
| Granted | 72,991 |
| 47.61 |
| 169,088 |
| 47.61 |
| Nonvested at March 31, 2018 | 72,991 |
| $ | 47.61 |
| 169,088 |
| $ | 47.61 |
|
|
| Performance Stock Unit and Performance Stock Award Activity Under Equity-Based Plans |
The following tables summarize restricted stock unit (RSU), performance-based restricted stock unit (PSU), RSA, and PRSA activity under our 2009 Plan for the three months ended March 31, 2018: | | | | | | | | | | | | | RSUs | PSUs | | Number of Units | Weighted-Average Grant Date Fair Value | Number of Units | Weighted-Average Grant Date Fair Value | Nonvested at December 31, 2017 | 2,249,661 |
| $ | 24.83 |
| 453,674 |
| $ | 30.72 |
| Granted | 548,054 |
| 46.97 |
| 23,842 |
| 47.61 |
| Vested | (286,121 | ) | 23.96 |
| (82,066 | ) | 33.51 |
| Forfeited | (88,396 | ) | 25.51 |
| — |
| — |
| Nonvested at March 31, 2018 | 2,423,198 |
| $ | 29.91 |
| 395,450 |
| $ | 30.89 |
|
| | | | | | | | | | | | | RSAs | PRSAs | | Number of Units | Weighted-Average Grant Date Fair Value | Number of Units | Weighted-Average Grant Date Fair Value | Nonvested at December 31, 2017 | — |
| $ | — |
| — |
| $ | — |
| Granted | 72,991 |
| 47.61 |
| 169,088 |
| 47.61 |
| Nonvested at March 31, 2018 | 72,991 |
| $ | 47.61 |
| 169,088 |
| $ | 47.61 |
|
|
| Stock-based Compensation Expense |
Stock-based compensation expense and other disclosures for stock-based awards made to our employees pursuant to the equity plans was as follows: | | | | | | | | | Three Months Ended
March 31, | (in millions) | 2018 | 2017 | Cost of providing services | $ | 2 |
| $ | 2 |
| Sales and marketing | 2 |
| 1 |
| General and administrative | 4 |
| 2 |
| Systems development and programming costs | 1 |
| 1 |
| Total stock-based compensation expense | $ | 9 |
| $ | 6 |
| Income tax benefit related to stock-based compensation expense | $ | 2 |
| $ | 2 |
| Tax benefit realized from stock options exercised and similar awards | $ | 6 |
| $ | 6 |
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