Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Analysis of Changes in Number of Shares of Common Stock Outstanding

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

TABLE 75: SHARES OF COMMON STOCK

	2015		2014		2013
Balance at January 1	233,390,705		237,322,035		238,914,988
Incentive Plan and Awards	1,033,664		1,040,015		863,958
Stock Options Exercised	1,721,282		2,515,769		3,088,490
Treasury Stock Purchased	(6,851,868	)	(7,487,114	)	(5,545,401	)
Balance at December 31	229,293,783		233,390,705		237,322,035