Unconsolidated Entities - Summary of Investments in and Advances to our Unconsolidated Entities (Detail) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities		$ 7,652,323	$ 7,602,014
Unconsolidated Co-Investment Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities		6,896,069	6,685,567
Other Ventures [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated entities	[1]	$ 756,254	$ 916,447

[1] During the nine months ended September 30, 2021, we acquired additional ownership interest in unconsolidated other ventures from our partners and began consolidating the real estate assets. We also sold our ownership interest in an unconsolidated other venture.