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

No definition available.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- 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

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- Details

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- Details

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- Details

Name:	us-gaap_RealEstatePropertiesAxis=aiv_WhollyAndPartiallyOwnedConsolidatedPropertiesMember
Namespace Prefix:
Data Type:	na
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- Details

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Business Segments - Narrative (Details) $ in Millions	12 Months Ended
Business Segments - Narrative (Details) $ in Millions	Dec. 31, 2018 USD ($) community Property apartment_home Segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of apartment homes \| community	6
Number of apartment communities	1,480
Number of reportable segments \| Segment	1
Real Estate \| Aimco Real Estate
Segment Reporting Information [Line Items]
Capital additions related to segments \| $	$ 338.8	$ 321.9	$ 312.8
Wholly and Partially Owned and Consolidated Properties \| Aimco Real Estate
Segment Reporting Information [Line Items]
Number of apartment homes \| Property	130
Number of apartment communities	36,407
Unconsolidated Properties \| Aimco Real Estate
Segment Reporting Information [Line Items]
Number of apartment homes \| Property	4
Number of apartment communities	142