RSUs
| 2013 | 2012 | 2011 | ||||||||||||||
| Weighted- | Weighted- | Weighted- | ||||||||||||||
| Average | Number | Average | Number | Average | Number | |||||||||||
| Grant Price | of Units | Grant Price | of Units | Grant Price | of Units | |||||||||||
| Balance at January 1 | $ | 148 | 9,841,461 | $ | 129 | 12,218,601 | $ | 110 | 11,196,446 | |||||||
| RSUs granted | 189 | 2,541,081 | 184 | 2,635,772 | 154 | 5,196,802 | ||||||||||
| RSUs released | 131 | (2,952,363) | 117 | (4,338,787) | 106 | (3,508,700) | ||||||||||
| RSUs canceled/forfeited | 154 | (794,862) | 139 | (674,125) | 122 | (665,947) | ||||||||||
| Balance at December 31 | $ | 166 | 8,635,317 | $ | 148 | 9,841,461 | $ | 129 | 12,218,601 | |||||||