Description of Business and Basis of Presentation	3 Months Ended
Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Description of Business: Cousins Properties Incorporated (“Cousins”), a Georgia corporation, is a fully integrated, self-administered, and self-managed real estate investment trust (“REIT”). Cousins conducts substantially all of its business through Cousins Properties LP ("CPLP"). Cousins owns in excess of 99% of CPLP and consolidates CPLP. CPLP wholly owns Cousins TRS Services LLC ("CTRS"), a taxable entity which owns and manages its own real estate portfolio and performs certain real estate-related services. Cousins, CPLP, CTRS, and their subsidiaries (collectively, the “Company”) develop, acquire, lease, manage, and own primarily Class A office properties and opportunistic mixed-use developments in the Sun Belt markets of the United States with a focus on Austin, Atlanta, Charlotte, Tampa, Phoenix, Dallas, and Nashville. Cousins has elected to be taxed as a REIT and intends to, among other things, distribute at least 100% of its net taxable income to stockholders, thereby eliminating any liability for federal income taxes under current law. Therefore, the results included herein do not include a federal income tax provision for Cousins. As of March 31, 2026, the Company's operating portfolio of real estate assets consisted of interests in 22.0 million square feet of office space and 974,000 square feet of other space. Basis of Presentation: The condensed consolidated financial statements are unaudited and were prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, these interim financial statements reflect all adjustments necessary (all of which are of a normal and recurring nature) for the fair presentation of the interim financial statements and accompanying notes. The results of operations for the three months ended March 31, 2026, are not necessarily indicative of results expected for the full year. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to the rules and regulations of the SEC. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes to the consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2025. The accounting policies employed are substantially the same as those shown in note 2 of the notes to consolidated financial statements included therein. The Company evaluates all partnerships, joint ventures, and other arrangements with variable interests to determine if the entity or arrangement qualifies as a variable interest entity ("VIE"), as defined in the Financial Accounting Standards Board's ("FASB") Accounting Standards Codification ("ASC"). If the entity or arrangement qualifies as a VIE and the Company is determined to be the primary beneficiary, the Company is required to consolidate the assets, liabilities, and results of operations of the VIE. The Company had no investments or interests in any VIEs as of March 31, 2026 or December 31, 2025. Recently Issued Accounting Pronouncements: In November 2024, the FASB issued ASU 2024-03 "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses." The ASU is effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027. The Company does not anticipate the guidance will have a material impact on our consolidated financial statements or notes to our consolidated financial statements.

Description of Business: Cousins Properties Incorporated (“Cousins”), a Georgia corporation, is a fully integrated, self-administered, and self-managed real estate investment trust (“REIT”). Cousins conducts substantially all of its business through Cousins Properties LP ("CPLP"). Cousins owns in excess of 99% of CPLP and consolidates CPLP. CPLP wholly owns Cousins TRS Services LLC ("CTRS"), a taxable entity which owns and manages its own real estate portfolio and performs certain real estate-related services.

Cousins, CPLP, CTRS, and their subsidiaries (collectively, the “Company”) develop, acquire, lease, manage, and own primarily Class A office properties and opportunistic mixed-use developments in the Sun Belt markets of the United States with a focus on Austin, Atlanta, Charlotte, Tampa, Phoenix, Dallas, and Nashville. Cousins has elected to be taxed as a REIT and intends to, among other things, distribute at least 100% of its net taxable income to stockholders, thereby eliminating any liability for federal income taxes under current law. Therefore, the results included herein do not include a federal income tax provision for Cousins. As of March 31, 2026, the Company's operating portfolio of real estate assets consisted of interests in 22.0 million square feet of office space and 974,000 square feet of other space.

Basis of Presentation: The condensed consolidated financial statements are unaudited and were prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, these interim financial statements reflect all adjustments necessary (all of which are of a normal and recurring nature) for the fair presentation of the interim financial statements and accompanying notes. The results of operations for the three months ended March 31, 2026, are not necessarily indicative of results expected for the full year. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to the rules and regulations of the SEC. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes to the consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2025. The accounting policies employed are substantially the same as those shown in note 2 of the notes to consolidated financial statements included therein.

The Company evaluates all partnerships, joint ventures, and other arrangements with variable interests to determine if the entity or arrangement qualifies as a variable interest entity ("VIE"), as defined in the Financial Accounting Standards Board's ("FASB") Accounting Standards Codification ("ASC"). If the entity or arrangement qualifies as a VIE and the Company is determined to be the primary beneficiary, the Company is required to consolidate the assets, liabilities, and results of operations of the VIE. The Company had no investments or interests in any VIEs as of March 31, 2026 or December 31, 2025.

Recently Issued Accounting Pronouncements: In November 2024, the FASB issued ASU 2024-03 "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses." The ASU is effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027. The Company does not anticipate the guidance will have a material impact on our consolidated financial statements or notes to our consolidated financial statements.