CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock, par value
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	605,737,077	578,465,159
Common stock, shares outstanding	605,737,077	578,465,159