Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 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 issued	297,000,000
Common stock, shares outstanding	297,018,000	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	198,618,151	130,085,145
Common stock, shares outstanding	198,618,151	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	14,857,931	5,624,614
Common stock, shares outstanding	14,857,931	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	16,827,076	3,955,114
Common stock, shares outstanding	16,827,076	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	66,715,121	30,719,160
Common stock, shares outstanding	66,715,121	30,719,160