Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2011

Changes in Number of Shares of Common Stock Outstanding

An analysis of changes in the number of shares of common stock outstanding follows:

	2011			2010			2009
Balance at January 1		242,268,903			241,679,942			223,263,132
Common Stock Issuance		–			–			17,250,000
Incentive Plan and Awards		189,793			300,376			479,359
Stock Options Exercised		149,385			419,846			938,249
Treasury Stock Purchased		(1,599,572	)		(131,261	)		(250,798	)
Balance at December 31		241,008,509			242,268,903			241,679,942