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Cover page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 21, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 1-9876    
Entity Registrant Name Weingarten Realty Investors    
Entity Incorporation, State or Country Code TX    
Entity Tax Identification Number 74-1464203    
Entity Address, Address Line One 2600 Citadel Plaza Drive, Suite 125    
Entity Address, City or Town Houston,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77008    
City Area Code (713)    
Local Phone Number 866-6000    
Title of 12(b) Security Common Shares of Beneficial Interest, $.03 par value    
Trading Symbol WRI    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Smaller Reporting Entity false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 3.3
Entity Common Stock, Shares Outstanding   128,961,786  
Documents Incorporated by Reference
Portions of the Registrant’s Proxy Statement relating to its Annual Meeting of Shareholders to be held on April 29, 2020 have been incorporated by reference to Part III of this Form 10-K.
    
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Entity Central Index Key 0000828916    
Current Fiscal Year End Date --12-31