Unaudited Condensed Consolidated Balance Sheets Parenthetical - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	150,000,000	150,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par or stated value per share	$ 0.01	$ 0.01
Common stock, shares authorized	1,500,000,000	1,500,000,000
Common stock, shares, issued	197,344,697	196,524,010
Common stock, shares, outstanding	195,251,923	196,524,010
Treasury stock, at cost, shares	2,092,774	0