Limited liability company (LLC) or limited partnership (LP), managing member or general partner, economic interest.

No definition available.

Name:	airc_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerEconomicInterest
Namespace Prefix:	airc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating partnership common units outstanding.

+ References

No definition available.

+ Details

Name:	airc_OperatingPartnershipCommonUnitsOutstanding
Namespace Prefix:	airc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Organization

+ References

No definition available.

+ Details

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Namespace Prefix:	airc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of average ownership of portfolio.

+ References

No definition available.

+ Details

Name:	airc_PercentageOfAverageOwnershipOfPortfolio
Namespace Prefix:	airc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units (items of property) under capital lease arrangements.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of general partner units outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770

+ Details

Name:	us-gaap_GeneralPartnersCapitalAccountUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_RealEstatePropertiesAxis=us-gaap_PartiallyOwnedPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Basis of Presentation and Organization (Details Textual)	9 Months Ended
	Sep. 30, 2021 Property1 Property ApartmentHome shares	Oct. 31, 2021 Property1 Multi_family_apartment	Sep. 30, 2020 ApartmentHome
Organization [Line Items]
Number of apartment homes in apartment communities	58	1,748	219
Number of leased properties \| Property1	4	4
Partially Owned Properties [Member]
Organization [Line Items]
Number of apartment homes \| Property	95
Number of apartment homes in apartment communities \| ApartmentHome	26,364
Percentage of average ownership of portfolio	93.00%
AIR Operating Partnership [Member]
Organization [Line Items]
Common operating partnership units and equivalents outstanding	168,215,225
Common operating partnership units and equivalents outstanding	156,983,542
Percentage of the Aimco Operating Partnership's common partnership units and equivalents owned by Aimco	93.30%
Percentage of economic interest	95.20%