Common Stock Issued and Outstanding (Tables)

12 Months Ended

Dec. 31, 2012

Activity in Number of Shares of Common Stock Issued and Outstanding

Activity in the number of shares of Common Stock issued and outstanding for the three years ended December 31, 2012 is shown below.

(Number of shares outstanding)	2012			2011		2010
At beginning of year		193,723,208			192,836,008		191,115,378
Stock options exercised*		482,974			615,674		1,495,926
Employee stock purchase and thrift plans		78,389			33,390		49,657
Restricted stock awards, net of forfeitures		224,296			238,136		175,047
Treasury shares purchased		(3,867,550	)		0		0
At end of year		190,641,317			193,723,208		192,836,008

* Shares issued upon exercise of stock options are less than the amount reflected in Note I due to withholdings for statutory income taxes owed upon exercise.