Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share Reconciliation
Net income	$ 38,662	$ 219,176
Net income attributable to noncontrolling interests	(47,601)	(48,631)
Net income attributable to unvested RSAs with nonforfeitable dividends	(2,660)	(3,659)
Numerator for basic and diluted EPS – net (loss) income attributable to Alexandria Real Estate Equities, Inc.’s common stockholders	$ (11,599)	$ 166,886
Denominator for basic EPS – weighted-average shares of common stock outstanding	170,522	171,949
Dilutive effect of unvested RSAs with forfeitable dividends	0	0
Denominator for diluted EPS – weighted-average shares of common stock outstanding	170,522	171,949
Earnings per share attributable to Alexandria Real Estate Equities, Inc.'s common stockholders - basic and diluted:
Earnings (loss) per share – basic (USD per share)	$ (0.07)	$ 0.97
Earnings (loss) per share - diluted (USD per share)	$ (0.07)	$ 0.97