(Millions) | 2013 | 2012 | 2011 | ||||||||
Total intrinsic value of stock options exercised | $ | 110 | $ | 110 | $ | 40 | |||||
Cash received from stock option exercises | 68 | 122 | 81 | ||||||||
Income tax benefit from the exercise of stock options | 36 | 35 | 9 | ||||||||
Total fair value of stock options vested | 11 | 6 | 10 |