Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 09, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	COUSINS PROPERTIES INC
Entity Central Index Key	0000025232
Document Type	10-K
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014	2013	2012
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float					$ 2,316,983,943
Entity Common Stock, Shares Outstanding				216,437,991