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Debt - Schedule of Debt (Details) - USD ($)	3 Months Ended
Debt - Schedule of Debt (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 4,444,863,000		$ 4,581,628,000
Unamortized discounts on unsecured senior notes	(35,320,000)		(36,099,000)
Deferred financing costs, net	(27,798,000)		(29,531,000)
Total debt per balance sheet	4,381,745,000		4,515,998,000
Amortization of financing costs	3,043,000	$ 2,453,000
Asset-backed securitizations, unsecured senior notes and term loan facility
Debt Instrument [Line Items]
Amortization of financing costs	1,700,000	$ 1,600,000
Secured Debt
Debt Instrument [Line Items]
Total debt	$ 1,894,863,000		1,901,628,000
Secured Debt \| AMH 2014-SFR2 securitization
Debt Instrument [Line Items]
Interest rate	4.42%
Total debt	$ 465,963,000		468,138,000
Secured Debt \| AMH 2014-SFR3 securitization
Debt Instrument [Line Items]
Interest rate	4.40%
Total debt	$ 481,518,000		482,964,000
Secured Debt \| AMH 2015-SFR1 securitization
Debt Instrument [Line Items]
Interest rate	4.14%
Total debt	$ 507,148,000		508,672,000
Secured Debt \| AMH 2015-SFR2 securitization
Debt Instrument [Line Items]
Interest rate	4.36%
Total debt	$ 440,234,000		441,854,000
Senior Notes \| 2028 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	4.25%
Effective interest rate	4.08%
Total debt	$ 500,000,000		500,000,000
Senior Notes \| 2029 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	4.90%
Total debt	$ 400,000,000		400,000,000
Senior Notes \| 2031 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	2.38%
Effective interest rate	2.46%
Total debt	$ 450,000,000		450,000,000
Senior Notes \| 2032 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	3.63%
Total debt	$ 600,000,000		600,000,000
Senior Notes \| 2051 unsecured senior notes
Debt Instrument [Line Items]
Interest rate	3.38%
Total debt	$ 300,000,000		300,000,000
Senior Notes \| 2052 unsecured senior notes, net
Debt Instrument [Line Items]
Interest rate	4.30%
Total debt	$ 300,000,000		300,000,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	5.76%
Total debt	$ 0		130,000,000
Maximum borrowing capacity	1,250,000,000
Outstanding letters of credit	$ 4,000,000		$ 4,000,000
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%