2013 | 2012 | 2011 | |||||||||||||||||||||
RSUs | Shares in millions | Weighted- average grant date fair value | Shares in millions | Weighted- average grant date fair value | Shares in millions | Weighted- average grant date fair value | |||||||||||||||||
Nonvested at beginning of year | 1.8 | $ | 68.23 | 2.1 | $ | 56.78 | 2.3 | $ | 51.17 | ||||||||||||||
Granted | 1.0 | 83.98 | 0.5 | 90.34 | 0.6 | 67.96 | |||||||||||||||||
Vested | (0.7 | ) | 56.93 | (0.8 | ) | 50.69 | (0.7 | ) | 49.88 | ||||||||||||||
Forfeited | (0.1 | ) | 82.44 | 0.0 | 68.72 | (0.1 | ) | 50.16 | |||||||||||||||
Nonvested at end of year | 2.0 | $ | 78.89 | 1.8 | $ | 68.23 | 2.1 | $ | 56.78 |