Fair Value - Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	$ 1,899,602	$ 1,908,346
Unsecured senior notes, net	2,492,610	1,622,132
Revolving credit facility	0	350,000
Total debt	4,392,212	3,880,478
Carrying Value | AH4R 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	467,786	470,039
Carrying Value | AH4R 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	482,895	485,005
Carrying Value | AH4R 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	508,245	510,585
Carrying Value | AH4R 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	440,676	442,717
Carrying Value | 2028 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	495,561	495,166
Carrying Value | 2029 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	396,271	395,990
Carrying Value | 2031 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	440,614	440,095
Carrying Value | 2032 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	580,524	0
Carrying Value | 2051 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	291,035	290,881
Carrying Value | 2052 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	288,605	0
Fair Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	1,923,694	1,952,026
Unsecured senior notes, net	2,211,173	1,766,149
Revolving credit facility	0	350,000
Total debt	4,134,867	4,068,175
Fair Value | AH4R 2014-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	473,303	479,464
Fair Value | AH4R 2014-SFR3 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	488,865	495,659
Fair Value | AH4R 2015-SFR1 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	514,567	521,639
Fair Value | AH4R 2015-SFR2 securitization
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset-backed securitization	446,959	455,264
Fair Value | 2028 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	477,660	554,895
Fair Value | 2029 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	393,816	463,840
Fair Value | 2031 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	361,454	442,953
Fair Value | 2032 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	526,092	0
Fair Value | 2051 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	207,963	304,461
Fair Value | 2052 unsecured senior notes, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unsecured senior notes, net	$ 244,188	$ 0