Equity - Schedule of Movement in Outstanding Shares of Class A Common Stock, Restricted Class A Common Stock and Deferred Stock Units (Detail) - shares	1 Months Ended	3 Months Ended
	May 31, 2013	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Beginning balance		135,263,728	123,664,577
Issuance of class A common stock	25,875,000	325	1,909,909
Issuance of restricted class A common stock, net		351,333	320,903
Issuance of deferred stock units		7,983	7,964
Ending balance		135,623,369	125,903,353