Fair Value - Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	$ 0	$ 130,000
Total debt	4,381,745	4,515,998
Carrying Value | Total asset-backed securitizations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	1,885,322	1,890,842
Carrying Value | AMH 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	464,006	465,864
Carrying Value | AMH 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	479,338	480,467
Carrying Value | AMH 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	504,546	505,738
Carrying Value | AMH 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	437,432	438,773
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	2,496,423	2,495,156
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	496,153	495,956
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	396,684	396,543
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	441,393	441,133
Carrying Value | 2032 unsecured senior notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	582,030	581,533
Carrying Value | 2051 unsecured senior notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	291,266	291,189
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	288,897	288,802
Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Revolving credit facility	0	130,000
Total debt	4,073,748	4,140,351
Fair Value | Total asset-backed securitizations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	1,896,503	1,905,542
Fair Value | AMH 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	467,957	469,192
Fair Value | AMH 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	478,755	484,350
Fair Value | AMH 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	508,581	509,714
Fair Value | AMH 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	441,210	442,286
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	2,177,245	2,104,809
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	471,280	463,920
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	387,424	377,680
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	358,340	347,243
Fair Value | 2032 unsecured senior notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	524,304	504,294
Fair Value | 2051 unsecured senior notes
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations and unsecured senior notes, net	198,816	189,750
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	$ 237,081	$ 221,922