Fair Value - Schedule of Carrying Values and Fair Values of Debt Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	$ 0	$ 0
Total debt	5,158,609	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	427,275	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	427,275	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	4,731,334	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	497,929	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	397,947	397,665
Carrying Value \| 2030 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	641,361	0
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	443,730	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	586,503	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	594,935	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	493,681	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	493,530	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	291,961	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	289,757	289,567
Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	0	0
Total debt	4,983,210	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	429,230	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	429,230	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	4,553,980	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	497,340	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	404,604	397,064
Fair Value \| 2030 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	656,767	0
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	392,036	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	554,850	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	610,626	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	507,305	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	497,060	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	199,089	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	$ 234,303	$ 234,258