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Shareholders' Equity / Partners' Capital - Class A Common Shares (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jan. 31, 2023
Sep. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Sep. 30, 2020
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Class of Stock [Line Items]                  
Stock exchange ratio             1    
Class A Common Shares                  
Class of Stock [Line Items]                  
Stated value per share (in dollars per share)           $ 0.01 $ 0.01 $ 0.01  
Offering costs             $ 200 $ 200 $ 600
Proceeds from issuance of Class A common shares             $ 561,472 $ 728,810 $ 414,100
Class A Common Shares | Public Stock Offering                  
Class of Stock [Line Items]                  
Sale of stock, number of shares issued in transaction (in shares)     23,000,000 18,745,000          
Stated value per share (in dollars per share)     $ 0.01 $ 0.01 $ 0.01        
Issuance of class A common shares, net of offering costs (in shares)         14,950,000        
Class A Common Shares | Public Stock Offering - Issued Directly By The Company                  
Class of Stock [Line Items]                  
Sale of stock, number of shares issued in transaction (in shares)     10,000,000 5,500,000          
Sale of stock, consideration received on transaction     $ 375,800 $ 194,000          
Offering costs     $ 200 $ 200 $ 200        
Proceeds from issuance of Class A common shares         $ 411,700        
Class A Common Shares | Public Stock Offering - Forward Sales Agreement                  
Class of Stock [Line Items]                  
Sale of stock, number of shares issued in transaction (in shares)   5,000,000 13,000,000 13,245,000   13,245,000      
Sale of stock, consideration received on transaction   $ 185,600       $ 463,500      
Remaining stock available (in shares)             8,000,000    
Class A Common Shares | Public Stock Offering - Forward Sales Agreement | Subsequent Events                  
Class of Stock [Line Items]                  
Sale of stock, number of shares issued in transaction (in shares) 8,000,000                
Sale of stock, consideration received on transaction $ 298,400                
American Homes 4 Rent                  
Class of Stock [Line Items]                  
General partner ownership interest             87.30% 86.80%  
Class A Common Units | Operating Partnership                  
Class of Stock [Line Items]                  
Units outstanding (in shares)           389,374,771 404,893,881 389,374,771