v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2019
Feb. 12, 2020
Jun. 30, 2019
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name REGENCY CENTERS CORPORATION    
Entity Central Index Key 0000910606    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 11.1
Entity Common Stock, Shares Outstanding   167,715,882  
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Title of 12(b) Security Common Stock, $.01 par value    
Trading Symbol REG    
Security Exchange Name NASDAQ    
Entity File Number 1-12298    
Entity Incorporation, State or Country Code FL    
Entity Tax Identification Number 59-3191743    
Entity Address, Address Line One One Independent Drive    
Entity Address, Address Line Two Suite 114    
Entity Address, City or Town Jacksonville    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 32202    
City Area Code 904    
Local Phone Number 598-7000    
Document Annual Report true    
Document Transition Report false    
Documents Incorporated by Reference Portions of Regency Centers Corporation's proxy statement in connection with its 2020 Annual Meeting of Stockholders are incorporated by reference in Part III.    
Partnership Interest [Member]      
Document Information [Line Items]      
Entity Registrant Name REGENCY CENTERS, L.P.    
Entity Central Index Key 0001066247    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer Yes    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity File Number 0-24763    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 59-3429602    
Entity Address, Address Line One One Independent Drive    
Entity Address, Address Line Two Suite 114    
Entity Address, City or Town Jacksonville    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 32202    
City Area Code 904    
Local Phone Number 598-7000    
Document Annual Report true    
Document Transition Report false