Organization and Business Purpose - Additional Information (Detail)	Dec. 06, 2019 USD ($)	Apr. 11, 2018 USD ($)	Jan. 09, 2018 USD ($)	Jun. 30, 2020 investment_in_real_estate position_in_real_estate_loan	Dec. 31, 2019 class
Class of Stock [Line Items]
Number of Classes Of Common Shares | class					4
Proceeds from Issuance Initial Public Offering	$ 150,000,000
Number of Real Estate Properties | investment_in_real_estate				4
Number Of Positions In Real Estate-Related Loans | position_in_real_estate_loan				2
Number Of Positions In Floating Rate Commercial Mortgage Backed Securities | position_in_real_estate_loan				8
Capitalized investment by affiliate			$ 200,000
Maximum [Member] | Primary Offering [Member]
Class of Stock [Line Items]
Offering of common stock		$ 1,600,000,000
Maximum [Member] | Distribution Reinvestment Plan [Member]
Class of Stock [Line Items]
Offering of common stock		$ 400,000,000
Oaktree [Member]
Class of Stock [Line Items]
Proceeds from Issuance Initial Public Offering	$ 86,900,000