Name:	are_MinimumPercentageOfTaxableIncomeToBeDistributed
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The "more likely than not" threshold is based on a cumulative probability model under which the largest amount of tax benefit recognized is the amount with a likelihood greater than this percentage of being realized upon ultimate settlement with the taxing authority having full knowledge of all relevant information.

No definition available.

Name:	are_MoreLikelyThanNotProbabilityThresholdForUncertainTaxPositionMinimum
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of leases containing effective annual rent escalations.

No definition available.

Name:	are_PercentageOfLeasesContainingEffectiveAnnualRentEscalation
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of leases that provided for the recapture of certain capital expenditures.

No definition available.

Name:	are_PercentageOfLeasesProvidingForRecaptureOfCapitalExpenditures
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The entity generally distributes this percentage or more of its taxable income.

No definition available.

Name:	are_PercentOfTaxableIncomeGenerallyDistributedAsDividend
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of leases which are triple net leases.

No definition available.

Name:	are_TripleNetLeasesPercentage
Namespace Prefix:	are_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Details

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

Interest generated from day to day operating activities of the business. This element represents a revenue generating activity and is therefore gross (before any related cost of revenue items).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688