Capital Stock (Tables)

12 Months Ended

Dec. 31, 2015

Common Stock and Treasury Stock Activity

The number of shares of common stock and treasury stock and the share activity for 2015 and 2014 were as follows:

	Common Shares						Treasury Shares
	2015			2014			2015		2014
Balance at the beginning of the year		158,140,128			166,667,936			13,809,889		2,404,320
Stock plan shares issued		3,249,892			2,877,761			—		—
Shares surrendered by optionees		(392,921	)		(288,797	)		392,921		288,797
Common stock repurchases		(1,091,067	)		(11,116,772	)		1,091,067		11,116,772
Balance at the end of the year		159,906,032			158,140,128			15,293,877		13,809,889