Unconsolidated Entities - Summary of Strategic Capital Revenues Recognized in Consolidated Statements of Income Related to Co-Investment Ventures (Detail) - Unconsolidated Co-Investment Ventures [Member] - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Recurring fees		$ 76,173	$ 65,537	$ 150,860	$ 127,654
Transactional fees		12,092	15,830	32,052	27,178
Promote revenue	[1]	227,830	7,283	228,421	7,283
Total strategic capital revenues from unconsolidated co-investment ventures	[2]	$ 316,095	$ 88,650	$ 411,333	$ 162,115

[1] Includes promote revenue earned from our unconsolidated co-investment venture in the U.S. in June 2020

[2] These amounts exclude strategic capital revenues from other ventures.