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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

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