Common Stock | Treasury Stock | ||||
Balance at January 1, 2011 | 1,012,261,159 | 277,002,059 | |||
Issued | (9,800,174 | ) | |||
Acquired | 354,503 | ||||
Balance at December 31, 2011 | 1,012,261,159 | 267,556,388 | |||
Issued | (11,935,423 | ) | |||
Acquired | 1,009,663 | ||||
Balance at December 31, 2012 | 1,012,261,159 | 256,630,628 | |||
Issued | (17,903,704 | ) | |||
Acquired | 26,155,537 | ||||
Balance at December 31, 2013 | 1,012,261,159 | 264,882,461 |