Consolidated Balance Sheet Paranthetical - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	1,609,670,817	1,594,213,786
Common stock, shares outstanding	1,362,104,547	1,346,647,516
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	247,566,270	247,566,270