Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2022	Feb. 03, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2022
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, 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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 17.1
Entity Common Stock, Shares Outstanding (in shares)		399,993,581
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement for the 2023 Annual Meeting of Stockholders are incorporated by reference into Part III, Items 10 through 14 of this Annual Report on Form 10-K to the extent stated herein. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2022.
Entity Central Index Key	0000740260
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false