Fair Value - Schedule of Carrying Values and Fair Values of Debt Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 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 | 4,518,813 | 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 | 927,099 | 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 | 496,159 | 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 | 430,940 | 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 | 3,591,714 | 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 | 497,337 | 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 | 397,524 | 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 | 442,951 | 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 | 585,012 | 583,521 |
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 | 594,529 | 0 |
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 | 493,162 | 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 | 291,729 | 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 | 289,470 | 289,183 |
Fair Value | | |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | | |
Revolving credit facility | 0 | 90,000 |
Total debt | 4,372,115 | 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 | 932,418 | 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 | 498,603 | 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 | 433,815 | 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 | 3,439,697 | 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 | 495,595 | 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 | 404,312 | 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 | 387,122 | 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 | 554,910 | 539,304 |
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 | 620,004 | 0 |
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 | 517,470 | 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 | 211,587 | 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 | $ 248,697 | $ 244,275 |