Capital Stock (Tables)

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Capital Stock

	Common Shares in Treasury		Common Shares Outstanding
Balance at January 1, 2011	124,324,862		107,020,728
Shares tendered as payment for option rights exercised	2,274		(2,274	)
Shares issued for exercise of option rights			1,480,058
Net shares issued for grants of restricted stock			55,722
Treasury stock purchased	4,700,000		(4,700,000	)
Treasury stock retired	(125,425,977	)
Balance at December 31, 2011	3,601,159		103,854,234
Shares tendered as payment for option rights exercised	7,766		(7,766	)
Shares issued for exercise of option rights			4,140,822
Shares tendered in connection with grants of restricted stock	143,979		(143,979	)
Net shares issued for grants of restricted stock			26,756
Treasury stock purchased	4,600,000		(4,600,000	)
Balance at December 31, 2012	8,352,904		103,270,067
Shares tendered as payment for option rights exercised	2,697		(2,697	)
Shares issued for exercise of option rights			1,127,942
Shares tendered in connection with grants of restricted stock	116,897		(116,897	)
Net shares issued for grants of restricted stock			150,965
Treasury stock purchased	4,300,000		(4,300,000	)
Balance at December 31, 2013	12,772,498		100,129,380