XML 83 R39.htm IDEA: XBRL DOCUMENT v3.25.3

Organization and basis of presentation (Details) ft² in Millions, $ in Billions	Sep. 30, 2025 USD ($) ft² Project
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Market capitalization | $	$ 27.8
Real Estate Properties
Number of projects expected to commence in the next year | Project	1
North America
Real Estate Properties
Area of real estate property	39.1
North America | Operating Properties
Real Estate Properties
Area of real estate property	39.1
North America | Active Development/Redevelopment
Real Estate Properties
Area of real estate property	4.2

X

- Definition

Market Capitalization

+ References

No definition available.

+ Details

Name:	are_MarketCapitalization
Namespace Prefix:	are_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Number Of Projects Expected Within The Next Year

+ References

No definition available.

+ Details

Name:	are_NumberOfProjectsExpectedWithinTheNextYear
Namespace Prefix:	are_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_StatementGeographicalAxis=srt_NorthAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=are_OperatingPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=are_ActiveDevelopmentRedevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: