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, 2022	Mar. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		168,543,370	147,086,722
Issuance of class A common stock, net (in shares)	25,875,000	1,675,639	515
Issuance of restricted class A common stock, net (in shares)		427,634	250,536
Issuance of deferred stock units (in shares)		7,063	11,437
Ending balance (in shares)		170,653,706	147,349,210
Deferred stock units held by directors (in shares)		370,635	318,128
Common stock, shares issued under dividend reinvestment program (in shares)		639	515
Restricted Class A Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares forfeited (in shares)		0	13,273