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Fair Value - Schedule of Carrying Values and Fair Values of Debt Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Carrying Value    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Revolving credit facility $ 410,000 $ 0
Total debt 4,926,702 5,010,762
Carrying Value | Total asset-backed securitizations, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 428,479 924,344
Carrying Value | AMH 2015-SFR1 securitization, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 0 494,635
Carrying Value | AMH 2015-SFR2 securitization, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 428,479 429,709
Carrying Value | Total unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 4,088,223 4,086,418
Carrying Value | 2028 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 497,732 497,534
Carrying Value | 2029 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 397,806 397,665
Carrying Value | 2031 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 443,470 443,210
Carrying Value | 2032 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 586,006 585,509
Carrying Value | 2034 unsecured senior notes I, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 594,787 594,640
Carrying Value | 2034 unsecured senior notes II, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 493,506 493,336
Carrying Value | 2035 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 493,370 493,150
Carrying Value | 2051 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 291,884 291,807
Carrying Value | 2052 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 289,662 289,567
Fair Value    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Revolving credit facility 410,000 0
Total debt 4,693,354 4,741,998
Fair Value | Total asset-backed securitizations, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 430,916 929,092
Fair Value | AMH 2015-SFR1 securitization, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 0 496,776
Fair Value | AMH 2015-SFR2 securitization, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 430,916 432,316
Fair Value | Total unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 3,852,438 3,812,906
Fair Value | 2028 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 494,955 488,265
Fair Value | 2029 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 401,728 397,064
Fair Value | 2031 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 386,501 376,947
Fair Value | 2032 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 545,184 537,174
Fair Value | 2034 unsecured senior notes I, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 600,678 597,504
Fair Value | 2034 unsecured senior notes II, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 499,050 496,185
Fair Value | 2035 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 491,055 487,335
Fair Value | 2051 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net 198,906 198,174
Fair Value | 2052 unsecured senior notes, net    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Total asset-backed securitizations and unsecured senior notes, net $ 234,381 $ 234,258