Fair Value - Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	$ 1,895,269	$ 1,908,346
Total unsecured senior notes, net	2,493,898	1,622,132
Revolving credit facility	0	350,000
Total debt	4,389,167	3,880,478
Carrying Value \| AH4R 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	466,825	470,039
Carrying Value \| AH4R 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	481,567	485,005
Carrying Value \| AH4R 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	507,107	510,585
Carrying Value \| AH4R 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	439,770	442,717
Carrying Value \| 2028 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	495,759	495,166
Carrying Value \| 2029 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	396,402	395,990
Carrying Value \| 2031 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	440,873	440,095
Carrying Value \| 2032 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	581,041	0
Carrying Value \| 2051 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	291,112	290,881
Carrying Value \| 2052 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	288,711	0
Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	1,914,810	1,952,026
Total unsecured senior notes, net	2,079,368	1,766,149
Revolving credit facility	0	350,000
Total debt	3,994,178	4,068,175
Fair Value \| AH4R 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	471,249	479,464
Fair Value \| AH4R 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	486,365	495,659
Fair Value \| AH4R 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	512,425	521,639
Fair Value \| AH4R 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total asset-backed securitizations	444,771	455,264
Fair Value \| 2028 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	461,625	554,895
Fair Value \| 2029 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	375,716	463,840
Fair Value \| 2031 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	340,875	442,953
Fair Value \| 2032 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	492,774	0
Fair Value \| 2051 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	188,400	304,461
Fair Value \| 2052 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total unsecured senior notes, net	$ 219,978	$ 0