Consolidated Balance Sheet Paranthetical (USD $)	Dec. 31, 2013	Dec. 31, 2012
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	1,560,302,634	1,542,347,188
Common stock, shares outstanding	1,322,296,064	1,355,711,656
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury shares	238,006,570	186,635,532