Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
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	694,533,000	438,938,000
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	381,155,980	276,989,019
Common stock, shares outstanding	381,155,980	276,989,019
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	31,903,877	23,313,429
Common stock, shares outstanding	31,903,877	23,313,429
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	52,916,501	30,375,353
Common stock, shares outstanding	52,916,501	30,375,353
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	228,556,040	108,261,331
Common stock, shares outstanding	228,556,040	108,261,331