v3.26.1
SENIOR NOTES PAYABLE AND OTHER DEBT - Credit Facilities, Commercial Paper, Unsecured Term Loans and Letters of Credit (Details)
6 Months Ended
Jun. 30, 2026
USD ($)
period
May 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Debt instruments      
Commercial paper program capacity $ 2,500,000,000 $ 2,000,000,000.0  
Commercial paper notes 265,000,000.0   $ 0
Mortgage loans and other 12,768,110,000   13,103,627,000
Ventas Realty      
Debt instruments      
Unsecured debt 1,250,000,000    
Unsecured debt | Revolving Credit Facility      
Debt instruments      
Maximum borrowing capacity $ 3,500,000,000    
Variable interest rate 0.775%    
Additional periods | period 2    
Additional period term 6 months    
Fair value of amount outstanding $ 0   0
Letters of credit outstanding 800,000    
Accordion feature of debt 4,500,000,000    
Unsecured debt | Letter of Credit      
Debt instruments      
Maximum borrowing capacity 100,000,000.0    
Unsecured debt | Letter of Credit | Credit Agreement      
Debt instruments      
Letters of credit outstanding 28,200,000    
Unsecured term loan due January 2031      
Debt instruments      
Unsecured debt $ 1,250,000,000   $ 500,000,000
Unsecured term loan due January 2031 | Ventas Realty      
Debt instruments      
Variable interest rate 0.85%    
Accordion feature of debt $ 1,750,000,000