Description of Business and Basis of Presentation - Description of Business (Details) shares in Thousands, ft² in Thousands	12 Months Ended
	Dec. 31, 2022 ft² shares	Dec. 31, 2021 shares
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)	18,800
Company's portfolio of real estate assets - Retail space (square feet)	310
Variable Interest Entity, Primary Beneficiary | Cousins Properties LP
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Common units (in shares) | shares	25	25
Cousins Properties LP
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of partnership units owned by the Company	99.00%