Organization (Details) ft² in Millions	Dec. 31, 2020 ft² a property apartment
VAA
Real Estate Properties [Line Items]
Number of units in real estate property \| apartment	10,137
Percentage ownership in VAA	50.00%
Commercial properties
Real Estate Properties [Line Items]
Number of real estate properties	6
Area (sq ft) \| ft²	1.6
Office building
Real Estate Properties [Line Items]
Number of real estate properties	5
Retail site
Real Estate Properties [Line Items]
Number of real estate properties	1
Apartment building
Real Estate Properties [Line Items]
Number of real estate properties	10
Number of units in real estate property \| apartment	1,639
Apartment building \| VAA
Real Estate Properties [Line Items]
Number of real estate properties	51
Developed and undeveloped land
Real Estate Properties [Line Items]
Area of land (acres) \| a	1,980
Transcontinental Realty Investors, Inc. \| ARL
Real Estate Properties [Line Items]
Ownership interest	78.00%
Transcontinental Realty Investors, Inc. \| Parent of ARL
Real Estate Properties [Line Items]
Ownership interest	7.00%

Area of land held.

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

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

+ 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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- 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

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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