Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 124,433	$ 95,799	$ 554,486	$ 370,038
Unrealized (losses) gains on foreign currency translation:
Unrealized foreign currency translation (losses) gains arising during the period	(1,521)	2,442	596	(889)
Unrealized (losses) gains on foreign currency translation, net	(1,521)	2,442	596	(889)
Total other comprehensive (loss) income	(1,521)	2,442	596	(889)
Comprehensive income	122,912	98,241	555,082	369,149
Less: comprehensive income attributable to noncontrolling interests	(21,286)	(14,743)	(58,134)	(40,563)
Comprehensive income attributable to Alexandria Real Estate Equities, Inc.’s stockholders	$ 101,626	$ 83,498	$ 496,948	$ 328,586