XML 79 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 17, 2020
Jun. 28, 2019
Document and Entity Information [Abstract]      
Document Annual Report true    
Documents Incorporated by Reference [Text Block]
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive Proxy Statement for the Annual Meeting of Stockholders to be held on May 19, 2020 are incorporated by reference into Part III, Items 10 through 14 of this Annual Report on Form 10-K.
    
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 1-10989    
Entity Registrant Name Ventas, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 61-1055020    
Entity Address, Address Line One 353 N. Clark Street    
Entity Address, Address Line Two Suite 3300    
Entity Address, City or Town Chicago    
Entity Address, State or Province IL    
Entity Address, Country US    
Entity Address, Postal Zip Code 60654    
City Area Code 877    
Local Phone Number  483-6827    
Trading Symbol VTR    
Title of 12(b) Security Common Stock, $0.25 par value    
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 Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 25.1
Entity Common Stock, Shares Outstanding   372,860,471  
Entity Central Index Key 0000740260    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false