Investments in Real Estate - Schedule of Details of Properties Acquired (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) ft² Property
Real Estate Properties [Line Items]
Number of Transactions	12
Number of Properties | Property	117
Purchase Price (in thousands) | $	$ 3,169,466
Multifamily Properties
Real Estate Properties [Line Items]
Number of Transactions	6
Number of Properties | Property	32
Sq. Feet | ft²	12,110,000
Purchase Price (in thousands) | $	$ 2,019,239
Industrial [Member]
Real Estate Properties [Line Items]
Number of Transactions	4
Number of Properties | Property	77
Sq. Feet | ft²	11,129,000
Purchase Price (in thousands) | $	$ 849,599
Retail [Member]
Real Estate Properties [Line Items]
Number of Transactions	1
Number of Properties | Property	6
Sq. Feet | ft²	689,000
Purchase Price (in thousands) | $	$ 287,392
Other Properties [Member]
Real Estate Properties [Line Items]
Number of Transactions	1
Number of Properties | Property	2
Sq. Feet | ft²	111,000
Purchase Price (in thousands) | $	$ 13,236