Nature of Business and Operations (Loss) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2020	Aug. 31, 2020	Jul. 31, 2020	Jun. 30, 2020	May 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Feb. 29, 2020	Jan. 31, 2020	Jan. 23, 2020	Dec. 31, 2019	Sep. 28, 2012
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)	1,000,000,000										1,000,000,000
Common stock, initial public offering price (in dollars per share)	$ 0	$ 0	$ 0	$ 9.08	$ 0	$ 0	$ 8.77	$ 0	$ 0
Issuance of common stock	$ 644,826
REIT I Merger Agreement
Class Of Stock [Line Items]
Date of merger agreement	Sep. 08, 2020
REIT I Company Merger
Class Of Stock [Line Items]
Convertible common stock, right to receive number of shares at the effective time of merger	1.22423
Convertible common stock, right to receive cash per share without interest at the effective time of merger	$ 0.02
REIT I Partnership Merger
Class Of Stock [Line Items]
Convertible common stock, right to receive number of shares at the effective time of merger	1.22423
Series A cumulative participating redeemable preferred unit, description	each Series A Cumulative Participating Redeemable Preferred Unit in OP I issued and outstanding immediately prior to the effective time of the REIT I Partnership Merger will convert into the right to receive one Series A Cumulative Participating Redeemable Preferred Unit in OP II.
REIT III Merger Agreement
Class Of Stock [Line Items]
Date of merger agreement	Sep. 08, 2020
Convertible common stock, right to receive number of shares at the effective time of merger	0.925862
Shares issued through initial public offering
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)												100,000,000
Common stock, initial public offering price (in dollars per share)												$ 10
Shares issued through the distribution reinvestment plan (in shares)	60,206,977
Gross offering proceeds	$ 644,800
Common stock, shares issued (in shares)	55,791,297
Issuance of common stock	$ 556,197
Shares issued through distribution reinvestment plan
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)										1,500,000	10,000,000
Common stock, purchase price percentage equal to estimated net asset value per share	95.00%
Common stock, shares issued (in shares)	10,197,719
Issuance of common stock	$ 88,479