Investments - Schedule of Details of Properties Acquired (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) ft² Property Transaction Unit
Real Estate Properties [Line Items]
Number of Transactions | Transaction	15
Number of Properties | Property	101
Purchase Price | $	$ 4,483,401	[1]
Multifamily
Real Estate Properties [Line Items]
Number of Transactions | Transaction	8
Number of Properties | Property	37
Sq. Ft. (in thousands)/Units | Unit	10,861
Purchase Price | $	$ 2,692,598	[1]
Industrial Assets
Real Estate Properties [Line Items]
Number of Transactions | Transaction	5
Number of Properties | Property	60
Sq. Ft. (in thousands)/Units | ft²	10,380
Purchase Price | $	$ 1,560,968	[1]
Office Buildings
Real Estate Properties [Line Items]
Number of Transactions | Transaction	1
Number of Properties | Property	3
Sq. Ft. (in thousands)/Units | ft²	460
Purchase Price | $	$ 135,242	[1]
Other Property
Real Estate Properties [Line Items]
Number of Transactions | Transaction	1
Number of Properties | Property	1
Sq. Ft. (in thousands)/Units | ft²	140
Purchase Price | $	$ 94,593	[1]

[1] Purchase price is inclusive of acquisition-related costs.