v2.4.0.8

Equity-Based Compensation Equity-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2013
Equity-based compensation |
Summary of RSU and RSA activity | A summary of the RSU and RSA activity for 2013 follows:
(Restricted stock units and awards in millions) | Number of restricted stock units and awards |  | Weighted-average fair value per unit and award
Non-vested at January 1 | 3.4 |  |  | $ | 42.47 |
Granted | 1.5 |  |  | 57.75 |
Vested | (1.3 | ) |  | 37.71 |
Forfeited | (0.2 | ) |  | 50.70 |
Non-vested at December 31 | 3.4 |  |  | $ | 51.37 |
Pre-tax and after-tax expense for RSUs and RSAs [Table Text Block] | Information related to RSUs and RSAs follows:
| 2013 |  | 2012 |  | 2011
Pretax expense for RSUs and RSAs | $ | 69 |  |  | $ | 46 |  |  | $ | 50 |
After-tax expense for RSUs and RSAs | 45 |  |  | 30 |  |  | 32 |
Assumptions used in determining fair value of stock options | A summary of the assumptions used in determining the fair value of stock options follows:
| 2013 |  | 2012 |  | 2011
Expected volatility | 36 | % |  | 35 | % |  | 33 | %
Expected option life in years | 5.5 |  |  | 5.5 |  |  | 5.5 |
Expected dividend yield | 2.0 | % |  | 2.0 | % |  | 2.0 | %
Risk-free interest rate | 1.5 to 0.8% |  |  | 1.0 to 0.9% |  |  | 2.2% to 1.4% |
Weighted-average fair value of stock options granted | $ | 17.49 |  |  | $ | 14.08 |  |  | $ | 14.56 |
Summary of stock option activity | A summary of stock option activity follows:
(Options in millions) | Weighted-average price per option |  | Options |  | Weighted-average remaining contractual life in years |  | Aggregate intrinsic value
Outstanding at January 1, 2013 | $ | 39.45 |  |  | 10.8 |  |  |  |  |
Granted | 63.15 |  |  | 0.8 |  |  |  |  |
Exercised | 35.76 |  |  | (3.6 | ) |  |  |  |
Forfeited and canceled | 50.76 |  |  | (0.1 | ) |  |  |  |
Outstanding at December 31, 2013 | $ | 43.43 |  |  | 7.9 |  |  | 4.4 |  | $ | 259 |
Exercisable at December 31, 2013 | $ | 40.05 |  |  | 6.4 |  |  | 3.4 |  | $ | 232 |
Reserved for future grants at December 31, 2013 |  |  | 17.7 |  |  |  |  |
Information related to stock options | Information related to stock options follows:
| 2013 |  | 2012 |  | 2011
Pretax expense for stock options | $ | 11 |  |  | $ | 7 |  |  | $ | 5 |
After-tax expense for stock options | 7 |  |  | 5 |  |  | 4 |
Proceeds from stock options exercised | 121 |  |  | 95 |  |  | 71 |
Income tax benefit related to stock options exercised |  |  |  |  |
Tax benefit classified in operating activities in the Consolidated Statements of Cash Flows | 3 |  |  | 5 |  |  | 13 |
Excess tax benefit classified in financing activities in the Consolidated Statements of Cash Flows | 22 |  |  | 13 |  |  | 33 |
Intrinsic value of stock options exercised | 102 |  |  | 60 |  |  | 62 |
Total fair value of stock options vesting | $ | 11 |  |  | $ | 7 |  |  | $ | 5 |
Stock options exercised, in millions of options | 3.565 |  |  | 3.099 |  |  | 2.541 |

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