v3.26.1
Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 23, 2026
Mar. 31, 2026
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Class of Stock [Line Items]          
Payments of offering costs $ 8,000   $ 6,256 $ 0 $ 2,113
Janus Living OP          
Class of Stock [Line Items]          
Unit redemption ratio     1    
LTIP Units (in shares)   392,000 392,000    
IPO          
Class of Stock [Line Items]          
Sale of stock, price per share (in dollars per share)   $ 20 $ 20    
Issuance of common stock in connection with initial public offering, net of underwriting fees 966,000        
Payments of offering costs $ 65,000        
Healthpeak          
Class of Stock [Line Items]          
Aggregate consideration   $ 4,300,000      
Class A-1 Shares          
Class of Stock [Line Items]          
Issuance of common stock in connection with initial public offering, net of underwriting fees     $ 901,326 $ 0  
Criteria redemption units (in shares)   75,917,780 75,917,780    
Criteria redemption units   $ 1,800,000 $ 1,800,000    
Class A-1 Shares | Janus Living OP          
Class of Stock [Line Items]          
Common unit, issued (in shares) 187,222,996 187,222,996 187,222,996    
Unit redemption ratio     1    
Class A-1 Shares | IPO          
Class of Stock [Line Items]          
Number of shares issued in transaction (in shares)   48,300,000      
Class A-1 Shares | Healthpeak          
Class of Stock [Line Items]          
Number of shares issued in transaction (in shares) 138,816,246 138,816,246      
Janus Living OP Common Units | Healthpeak          
Class of Stock [Line Items]          
Number of shares issued in transaction (in shares) 75,917,780 75,917,780      
Common Class A-2 | Healthpeak          
Class of Stock [Line Items]          
Aggregate consideration $ 760        
LTIP Units | Certain Employees Of Janus Living, Inc. | Janus Living OP          
Class of Stock [Line Items]          
Issuance of common stock, net (in shares)     392,000