Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 654,282	$ 827,171	$ 404,047
Unrealized losses on interest rate hedge agreements:
Unrealized interest rate hedge losses during the period	0	0	(1,763)
Reclassification of amortization to interest expense included in net income	0	0	(1,777)
Reclassification of losses related to terminated interest rate hedge instruments to interest expense included in net income	0	0	1,702
Unrealized losses on interest rate hedge agreements, net	0	0	(1,838)
Unrealized (losses) gains on foreign currency translation:
Unrealized foreign currency translation (losses) gains arising during the period	(669)	3,124	2,524
Unrealized (losses) gains on foreign currency translation, net	(669)	3,124	2,524
Total other comprehensive (loss) income	(669)	3,124	686
Comprehensive income	653,613	830,295	404,733
Less: comprehensive income attributable to noncontrolling interests	(83,035)	(56,212)	(40,882)
Comprehensive income attributable to Alexandria Real Estate Equities, Inc.’s stockholders	$ 570,578	$ 774,083	$ 363,851