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Debt - Schedule of Debt (Details) - USD ($)	3 Months Ended		9 Months Ended
Debt - Schedule of Debt (Details) - USD ($)	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt	$ 4,457,326,000		$ 4,457,326,000			$ 3,924,181,000
Unamortized discounts on unsecured senior notes	(36,877,000)		(36,877,000)			(15,561,000)
Deferred financing costs, net	(31,282,000)		(31,282,000)			(28,142,000)
Total debt per balance sheet	4,389,167,000		4,389,167,000			3,880,478,000
Amortization of financing costs			8,588,000	$ 6,290,000
Asset-backed securitizations, unsecured senior notes and term loan facility
Debt Instrument [Line Items]
Amortization of financing costs	1,800,000	$ 1,500,000	5,100,000	$ 4,500,000
Secured Debt
Debt Instrument [Line Items]
Total debt	$ 1,907,326,000		$ 1,907,326,000			1,924,181,000
Secured Debt \| AH4R 2014-SFR2 securitization
Debt Instrument [Line Items]
Interest rate	4.42%		4.42%
Total debt	$ 469,421,000		$ 469,421,000			473,594,000
Secured Debt \| AH4R 2014-SFR3 securitization
Debt Instrument [Line Items]
Interest rate	4.40%		4.40%
Total debt	$ 484,389,000		$ 484,389,000			488,790,000
Secured Debt \| AH4R 2015-SFR1 securitization
Debt Instrument [Line Items]
Interest rate	4.14%		4.14%
Total debt	$ 510,380,000		$ 510,380,000			514,868,000
Secured Debt \| AH4R 2015-SFR2 securitization
Debt Instrument [Line Items]
Interest rate	4.36%		4.36%
Total debt	$ 443,136,000		$ 443,136,000			446,929,000
Senior Notes \| 2028 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	4.25%		4.25%
Effective interest rate	4.08%		4.08%
Total debt	$ 500,000,000		$ 500,000,000			500,000,000
Senior Notes \| 2029 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	4.90%		4.90%
Total debt	$ 400,000,000		$ 400,000,000			400,000,000
Senior Notes \| 2031 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	2.38%		2.38%
Effective interest rate	2.46%		2.46%
Total debt	$ 450,000,000		$ 450,000,000			450,000,000
Senior Notes \| 2032 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	3.63%		3.63%		3.625%
Total debt	$ 600,000,000		$ 600,000,000		$ 600,000,000	0
Senior Notes \| 2051 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	3.38%		3.38%
Total debt	$ 300,000,000		$ 300,000,000			300,000,000
Senior Notes \| 2052 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	4.30%		4.30%		4.30%
Total debt	$ 300,000,000		$ 300,000,000		$ 300,000,000	0
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	4.04%		4.04%
Total debt	$ 0		$ 0			350,000,000
Maximum borrowing capacity	1,250,000,000		1,250,000,000
Outstanding letters of credit	$ 2,700,000		$ 2,700,000			$ 1,600,000
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			0.90%