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Debt - Schedule of Debt (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
USD ($)
debtInstrumentExtensionOption
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]      
Total debt $ 4,561,186   $ 4,517,158
Unamortized discounts on unsecured senior notes (32,832)   (32,981)
Deferred financing costs, net (25,241)   (22,530)
Total debt per balance sheet 4,503,113   4,461,647
Amortization of financing costs 3,056 $ 3,043  
Asset-backed securitizations, unsecured senior notes and term loan facility      
Debt Instrument [Line Items]      
Amortization of financing costs 1,700 $ 1,700  
Secured Debt      
Debt Instrument [Line Items]      
Total debt $ 1,411,186   1,877,158
Secured Debt | AMH 2014-SFR2 securitization      
Debt Instrument [Line Items]      
Interest rate 4.42%    
Total debt $ 0   461,498
Secured Debt | AMH 2014-SFR3 securitization      
Debt Instrument [Line Items]      
Interest rate 4.40%    
Total debt $ 475,240   477,064
Secured Debt | AMH 2015-SFR1 securitization      
Debt Instrument [Line Items]      
Interest rate 4.14%    
Total debt $ 500,843   502,299
Potential weighted-average interest rate increase contingent upon repayment 3.00%    
Secured Debt | AMH 2015-SFR2 securitization      
Debt Instrument [Line Items]      
Interest rate 4.36%    
Total debt $ 435,103   436,297
Potential weighted-average interest rate increase contingent upon repayment 3.00%    
Senior Notes | 2028 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 4.25%    
Effective interest rate 4.08%    
Total debt $ 500,000   500,000
Senior Notes | 2029 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 4.90%    
Total debt $ 400,000   400,000
Senior Notes | 2031 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 2.38%    
Effective interest rate 2.46%    
Total debt $ 450,000   450,000
Senior Notes | 2032 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 3.63%    
Total debt $ 600,000   600,000
Senior Notes | 2034 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 5.50%    
Total debt $ 600,000   0
Senior Notes | 2051 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 3.38%    
Total debt $ 300,000   300,000
Senior Notes | 2052 unsecured senior notes      
Debt Instrument [Line Items]      
Interest rate 4.30%    
Total debt $ 300,000   300,000
Line of Credit | Revolving Credit Facility      
Debt Instrument [Line Items]      
Interest rate 6.34%    
Total debt $ 0   90,000
Maximum borrowing capacity $ 1,250,000    
Number of extension options | debtInstrumentExtensionOption 2    
Extension period 6 months    
Outstanding letters of credit $ 2,700   $ 2,700
Line of Credit | Revolving Credit Facility | SOFR      
Debt Instrument [Line Items]      
Basis spread on variable rate 0.90%