Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value (dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (shares)	4,990,000,000	160,000,000
Common stock, shares issued (shares)	427,388,288	422,910,887
Common stock, shares outstanding (shares)	427,388,288	422,910,887