INVESTMENTS IN REAL ESTATE PROPERTIES - Schedule of Purchase Price Allocation of Acquisitions (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Real Estate [Abstract]
Land	$ 216,278	$ 109,264
Building and improvements	1,148,620	736,575
Intangible lease assets	308,467	38,581
Above-market lease assets	5,693	1,777
Below-market lease liabilities	(148,698)	(14,356)
Total purchase price	$ 1,530,360	$ 871,841

Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Land.

No definition available.

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- Definition

Asset Acquisition Recognized Identifiable Assets Acquired And Liabilities Assumed, Net

+ References

No definition available.

+ Details

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- Definition

Asset Acquisitions Recognized Identifiable Assets Acquired and Liabilities Assumed Below market Lease Liabilities.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Asset Acquisition Recognized Identifiable Assets Acquired and Liabilities Assumed Buildings.

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No definition available.

+ Details

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Namespace Prefix:	are_
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Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

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No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the identifiable intangible asset established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(15))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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- References

No definition available.

+ Details

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