Description of Business and Basis of Presentation - Description of Business (Details) ft² in Thousands	12 Months Ended
Dec. 31, 2020 ft²
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Distribution of taxable income to qualify as REIT, percentage	100.00%
Company's portfolio of real estate assets - Office space (square feet)	19,700
Company's portfolio of real estate assets - Retail space (square feet)	310
Cousins Properties LP
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of partnership units owned by the Company	99.00%

Company's portfolio of real estate assets - Total square footage of office portfolio.

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- Definition

Company's portfolio of real estate assets - Total square footage of retail portfolio.

+ References

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- Definition

Distribution Of Taxable Income To Qualify As REIT, Minimum

+ References

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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

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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

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