Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Preferred Stock, Par Value	$ 0.01	$ 0.01
Preferred stock, authorized shares	100,000,000	100,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, shares outstanding	367,751,000	170,384,000
Class S Shares [Member]
Common Stock, Par Value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	237,262,632	130,085,145
Common stock, shares outstanding	237,262,632	130,085,145
Class T Shares [Member]
Common Stock, Par Value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	19,227,318	5,624,614
Common stock, shares outstanding	19,227,318	5,624,614
Class D Shares [Member]
Common Stock, Par Value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	24,178,629	3,955,114
Common stock, shares outstanding	24,178,629	3,955,114
Class I Shares [Member]
Common Stock, Par Value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	87,082,488	30,719,160
Common stock, shares outstanding	87,082,488	30,719,160