Earnings Per Common Share - Schedule of Computation (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common stockholders	$ 203,579	$ 202,998
Earnings and dividends allocated to participating securities	(286)	(312)
Earnings for basic computations	203,293	202,686
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units	11,693	11,894
Fixed component of income allocated to noncontrolling interest - Preferred Operating Partnership (Series A Units)	(572)	(572)
Net income for diluted computations	$ 214,414	$ 214,008
Weighted average common shares outstanding:
Average number of common shares outstanding - basic (in shares)	134,180,175	132,007,556
OP Units (in shares)	6,520,781	5,800,729
Shares related to exchangeable senior notes and dilutive stock options (in shares)	5,426	23,409
Average number of common shares outstanding - diluted (in shares)	141,581,862	139,676,548
Earnings per common share
Basic (in dollars per share)	$ 1.52	$ 1.54
Diluted (in dollars per share)	$ 1.51	$ 1.53
Series A Units
Weighted average common shares outstanding:
Preferred Units (in shares)	875,480	875,480
Series D Units
Weighted average common shares outstanding:
Preferred Units (in shares)	0	969,374