Investments in real estate - Schedule of investment in real estates (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Real Estate
Investments in real estate	$ 32,121,712	$ 32,110,039
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Real Estate
Investments in real estate	216,251	372,647
Alexandria Center for Life Science - New York City
Real Estate
Gross investments in real estate	171,100
North America
Real Estate
Land (related to rental properties)	3,897,927	3,863,027
Buildings and building improvements	20,788,541	20,377,935
Other improvements	4,530,136	4,354,785
Rental properties	29,216,604	28,595,747
Development and redevelopment projects	8,456,971	8,618,727
Gross investments in real estate	37,673,575	37,214,474
Less: accumulated depreciation	(5,768,114)	(5,477,082)
Investments in real estate	$ 32,121,712	$ 32,110,039

Carrying amount as of the balance sheet date of improvements not otherwise specified in the existing taxonomy.

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The current amount of expenditures for a real estate project that has not yet been completed.

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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The cumulative amount of depreciation for real estate property held for investment purposes.

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Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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Carrying amount of income producing properties held for rental.

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