NONCONTROLLING INTERESTS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Noncontrolling Interest
Aggregate amount of OP units redeemed	$ 122,486	$ 191,630	$ 193,859
OP Units
Noncontrolling Interest
Number of common stock issued per operating partnership unit (in shares)	1
Aggregate amount of OP units redeemed	$ 44,800	31,400	$ 30,900
OP Units \| Maximum
Noncontrolling Interest
Estimated maximum redemption value	$ 1,440,000	$ 1,190,000
OP Units \| Operating Partnership \| Third Party Investors
Noncontrolling Interest
Ownership percentage owned by third-party investors	46.40%	46.60%

Fair Value Of Redemption Value

No definition available.

Name:	are_FairValueOfRedemptionValue
Namespace Prefix:	are_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Redemption Of Operating Partnership Units, Number Of Common Stock Issued Per Operating Partnership Unit

+ References

No definition available.

+ Details

Name:	are_RedemptionOfOperatingPartnershipUnitsNumberOfCommonStockIssuedPerOperatingPartnershipUnit
Namespace Prefix:	are_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

+ Details

Name:	us-gaap_StockRedeemedOrCalledDuringPeriodValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementEquityComponentsAxis=are_OperatingPartnershipUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=are_AREITOperatingPartnershipLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=are_ThirdPartyInvestorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: