Fair Value - Schedule of Carrying Values and Fair Values of Debt Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	$ 0	$ 90,000
Total debt	5,010,762	4,461,647
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	924,344	1,871,421
Carrying Value | AMH 2014-SFR2 securitization, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	0	460,507
Carrying Value | AMH 2014-SFR3 securitization, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	0	475,854
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	494,635	500,713
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	429,709	434,347
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	4,086,418	2,500,226
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	497,534	496,745
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	397,665	397,107
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	443,210	442,172
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	585,509	583,521
Carrying Value | 2034 unsecured senior notes I
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	594,640	0
Carrying Value | 2034 unsecured senior notes II
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	493,336	0
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	493,150	0
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	291,807	291,498
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	289,567	289,183
Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	0	90,000
Total debt	4,741,998	4,219,737
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	929,092	1,883,246
Fair Value | AMH 2014-SFR2 securitization, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	0	463,237
Fair Value | AMH 2014-SFR3 securitization, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	0	478,833
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	496,776	503,668
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	432,316	437,508
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	3,812,906	2,246,491
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	488,265	486,875
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	397,064	396,956
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	376,947	371,817
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	537,174	539,304
Fair Value | 2034 unsecured senior notes I
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	597,504	0
Fair Value | 2034 unsecured senior notes II
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	496,185	0
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	487,335	0
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	198,174	207,264
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	$ 234,258	$ 244,275