Carrying value as of the balance sheet date, of debt obligations collateralized by single family properties.

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Represents the minimum debt service coverage ratio, as defined, pursuant to the financial covenants contained in the debt agreement.

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Represents the ratio of monthly principal payment of loan.

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Represents the number of extension options for debt instrument.

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Represents the period of extension options for debt instrument.

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Represents the percentage of rate increased in the event of loan not paid.

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Represents the period of debt service considered for debt coverage ratio.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The number of real estate properties owned as of the balance sheet date.

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No definition available.

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Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.

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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Repayments of securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.

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Debt (Details) (USD $)	3 Months Ended	1 Months Ended
Debt (Details) (USD $)	Mar. 31, 2015 property	Mar. 31, 2015	Dec. 31, 2014 property	Sep. 30, 2013	Mar. 31, 2013
Proforma Debt Instrument
Asset-backed securitizations	$ 2,068,389,000amh_AssetBackedSecuritization	$ 2,068,389,000amh_AssetBackedSecuritization	$ 1,519,390,000amh_AssetBackedSecuritization
Secured note payable	51,417,000us-gaap_NotesPayable	51,417,000us-gaap_NotesPayable	51,644,000us-gaap_NotesPayable
Credit facility	45,000,000us-gaap_LineOfCredit	45,000,000us-gaap_LineOfCredit	207,000,000us-gaap_LineOfCredit
Total debt	2,164,806,000us-gaap_LongTermDebt	2,164,806,000us-gaap_LongTermDebt	1,778,034,000us-gaap_LongTermDebt
Gross proceeds from the sale of certificates	552,830,000
Number of properties	36,588us-gaap_NumberOfRealEstateProperties	36,588us-gaap_NumberOfRealEstateProperties	34,599us-gaap_NumberOfRealEstateProperties
Interest rate cap agreement	3,000us-gaap_DerivativeAssets	3,000us-gaap_DerivativeAssets	14,000us-gaap_DerivativeAssets
Payments on asset-backed securitizations	3,831,000
Single-family properties, net	6,037,355,000us-gaap_RealEstateInvestmentPropertyNet	6,037,355,000us-gaap_RealEstateInvestmentPropertyNet	5,710,671,000us-gaap_RealEstateInvestmentPropertyNet
Single family homes
Proforma Debt Instrument
Minimum coverage ratio	1.20
Period of debt service considered for debt coverage ratio	12 months
2014-SFR 1
Proforma Debt Instrument
Asset-backed securitizations	477,363,000	477,363,000	478,565,000
Debt instrument initial term	2 years
Percentage of rate increased in the event of loan not paid	3.00%
Number of extension options	3
Period of extension options	12 months
Interest rate (as percent)	1.79%	1.79%
Debt instrument, description of variable rate	LIBOR
Debt instrument, basis spread on variable rate (as a percent)	1.54%
2014-SFR 2
Proforma Debt Instrument
Asset-backed securitizations	511,151,000	511,151,000	512,435,000
Interest rate (as percent)	4.42%	4.42%
2014-SFR 3
Proforma Debt Instrument
Asset-backed securitizations	527,097,000	527,097,000	528,390,000
Interest rate (as percent)	4.40%	4.40%
2015-SFR 1
Proforma Debt Instrument
Asset-backed securitizations	552,778,000	552,778,000
Debt instrument initial term		30 years
Interest rate (as percent)	4.14%	4.14%
2015-SFR 1 \| Single family homes
Proforma Debt Instrument
Gross proceeds from the sale of certificates		552,800,000
Issuance costs for the sale of certificates		13,300,000
Debt instrument initial term	10 years
Borrower
Proforma Debt Instrument
Ratio of monthly principal payment of loan	0.083
Borrower \| 2015-SFR 1
Proforma Debt Instrument
Loan amount	552,800,000	552,800,000
Borrower \| 2015-SFR 1 \| Note
Proforma Debt Instrument
Number of properties	4,661	4,661
Single-family properties, net	751,200,000	751,200,000
Until March 2017 \| 2014-SFR 1
Proforma Debt Instrument
Debt instrument, basis spread on variable rate (as a percent)	2.75%
March 2017 and Thereafter \| 2014-SFR 1
Proforma Debt Instrument
Debt instrument, basis spread on variable rate (as a percent)	3.125%
Senior Secured Revolving Credit Facility
Proforma Debt Instrument
Interest rate (as percent)	2.93%	2.93%
Credit facility amount, maximum	800,000,000	800,000,000		800,000,000	500,000,000
Senior Secured Revolving Credit Facility \| LIBOR
Proforma Debt Instrument
Debt instrument, description of variable rate	30 day LIBOR
Debt instrument, basis spread on variable rate (as a percent)	2.75%
Senior Secured Revolving Credit Facility \| Until March 2017 \| LIBOR
Proforma Debt Instrument
Debt instrument, description of variable rate	30 day LIBOR
Debt instrument, basis spread on variable rate (as a percent)	2.75%
Senior Secured Revolving Credit Facility \| March 2017 and Thereafter \| LIBOR
Proforma Debt Instrument
Debt instrument, description of variable rate	30 day LIBOR
Debt instrument, basis spread on variable rate (as a percent)	3.125%
Senior Notes
Proforma Debt Instrument
Secured note payable	$ 51,417,000	$ 51,417,000	$ 51,644,000
Interest rate (as percent)	4.06%	4.06%