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

No definition available.

Name:	amh_AssetBackedSecuritization
Namespace Prefix:	amh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the minimum required amount of liquidity in the form of cash and cash equivalents, as defined, pursuant to the financial covenants contained in the debt agreement.

+ References

No definition available.

+ Details

Name:	amh_DebtInstrumentCovenantLiquidityCashAndCashEquivalentRequiredAmount
Namespace Prefix:	amh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the minimum required amount of liquidity, as defined, pursuant to the financial covenants contained in the debt agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the minimum required percentage of tangible net worth, as defined, pursuant to the financial covenants contained in the debt agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of capital raised subsequent to a specified date which is used to compute the required tangible net worth pursuant to the covenants contained in the debt agreement.

+ References

No definition available.

+ Details

Name:	amh_DebtInstrumentCovenantPercentageOfAdditionalCapitalAppliedToTangibleNetWorthCalculation
Namespace Prefix:	amh_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Represents the maximum permitted leverage ratio, as defined, pursuant to the financial covenants contained in the debt agreement.

+ References

No definition available.

+ Details

Name:	amh_DebtInstrumentLeverageRatio
Namespace Prefix:	amh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:pureItemType
Balance Type:	na
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- Definition

Represents the ratio of monthly principal payment of loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of extension options for debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:integerItemType
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Period Type:	duration

- Definition

Represents the percentage portion of principal amount of loan for which monthly payment is required.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of extension options for debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the effective percentage of interest rate cap agreements hedged as cash flow derivative.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of the lower of cost or fair value of the reporting entity's leased and un-leased properties which is used to compute the borrowing base under the line of credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Line of Credit Facility, Extension Period

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the London interbank offered rate, floor.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum debt service coverage ration.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of minimum debt yield required to be maintained by the borrower.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	num:percentItemType
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- Definition

Represents the number of classes of certificates for which note was exchanged.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of floating rate components of loan.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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Represents the number of properties treated as collateral and first priority mortgage for the debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
Data Type:	xbrli:durationItemType
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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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-SubTopic 30
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-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

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

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-Name Accounting Standards Codification
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- Definition

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

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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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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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-SubTopic 20
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-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeTermOfContract
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

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Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

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Name:	us-gaap_ProceedsFromAccountsReceivableSecuritization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 15
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Name:	us-gaap_RepaymentsOfAccountsReceivableSecuritization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtSecurityAxis=amh_AssetBackedSecuritizationsMay2014SecuritizationMember
Namespace Prefix:
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- Details

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Name:	dei_LegalEntityAxis=amh_SpecialPurposeEntityMember
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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=amh_SingleFamilyHomesMember
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- Details

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Debt - Narrative (Details 1)							1 Months Ended						12 Months Ended
Debt - Narrative (Details 1)	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2014 USD ($) single_family_property property	Mar. 07, 2013 USD ($)	Feb. 29, 2016	Sep. 30, 2015 USD ($) nonperforming_loan single_family_property	Mar. 31, 2015 USD ($) nonperforming_loan property	Nov. 30, 2014 USD ($) property	Sep. 30, 2014 USD ($) single_family_property	May. 31, 2014 USD ($) extension_option floating_rate_component property pass_through_certificate	Dec. 31, 2015 USD ($) single_family_property property	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2013 USD ($)	Sep. 30, 2014	Sep. 30, 2014 USD ($)	Sep. 30, 2014 property	Sep. 30, 2013 USD ($)
Debt Instrument [Line Items]
Proceeds from asset-backed securitizations													$ 1,030,559,000	$ 1,497,039,000	$ 0
Number of properties \| single_family_property	34,599	34,599	34,599	34,599	34,599								38,780	34,599
Asset-backed securitizations	$ 1,519,390,000	$ 1,519,390,000	$ 1,519,390,000	$ 1,519,390,000	$ 1,519,390,000								$ 2,530,210,000	$ 1,519,390,000
Single-family properties	5,710,671,000	5,710,671,000	5,710,671,000	5,710,671,000	5,710,671,000								6,289,938,000	5,710,671,000
Interest rate cap agreement	14,000	14,000	14,000	14,000	14,000								0	14,000
Payments for purchase of certificates													19,739,000	3,315,000	$ 0
Credit facility	207,000,000	207,000,000	207,000,000	207,000,000	207,000,000								$ 0	207,000,000
2014-SFR 1
Debt Instrument [Line Items]
Debt instrument term												2 years
Interest rate cap agreement strike rate												3.85%
Number of debt instrument extension options \| extension_option												3
Period of extension options												12 months
Asset-backed securitizations	$ 478,565,000	$ 478,565,000	$ 478,565,000	$ 478,565,000	$ 478,565,000									$ 478,565,000
Effective percentage of interest rate cap agreements hedged as cash flow derivative													100.00%
Estimated amount of gain (loss) to be reclassified as increase to interest expense over next 12 months													$ 100,000
Interest rate	1.79%	1.79%	1.79%	1.79%	1.79%								1.97%	1.79%
2014-SFR 1 \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate												0.25%
2015-SFR 1
Debt Instrument [Line Items]
Asset-backed securitizations	$ 0	$ 0	$ 0	$ 0	$ 0									$ 0
Interest rate	4.14%	4.14%	4.14%	4.14%	4.14%								4.14%	4.14%
2014-SFR 2
Debt Instrument [Line Items]
Asset-backed securitizations	$ 512,435,000	$ 512,435,000	$ 512,435,000	$ 512,435,000	$ 512,435,000									$ 512,435,000
Interest rate	4.42%	4.42%	4.42%	4.42%	4.42%								4.42%	4.42%
2014-SFR 3
Debt Instrument [Line Items]
Asset-backed securitizations	$ 528,390,000	$ 528,390,000	$ 528,390,000	$ 528,390,000	$ 528,390,000									$ 528,390,000
Interest rate	4.40%	4.40%	4.40%	4.40%	4.40%								4.40%	4.40%
2015-SFR 2
Debt Instrument [Line Items]
Asset-backed securitizations	$ 0	$ 0	$ 0	$ 0	$ 0									$ 0
Interest rate	4.36%	4.36%	4.36%	4.36%	4.36%								4.36%	4.36%
Special Purpose Entity \| Notes Payable
Debt Instrument [Line Items]
Loan amount												$ 481,000,000.0
Special Purpose Entity \| 2014-SFR 1 \| Notes Payable
Debt Instrument [Line Items]
Derivative term of contract												2 years
Number of floating rate loan components \| floating_rate_component												6
Ratio of interest and principal payments as a percentage of original principal amount												0.083
Portion of principal amount for which monthly payment is required as a percent												1.00%
Number of properties \| property													3,852
Debt covenant, minimum debt yield percentage												6.68%
Special Purpose Entity \| 2015-SFR 1
Debt Instrument [Line Items]
Loan amount									$ 552,800,000.0
Debt instrument term									30 years
Number of classes of certificates \| nonperforming_loan									8
Asset-backed securitizations													$ 549,121,000
Weighted-average interest rate									4.14%
Special Purpose Entity \| 2015-SFR 1 \| Notes Payable
Debt Instrument [Line Items]
Number of properties \| property									4,661			3,852
Single-family properties													735,000,000
Special Purpose Entity \| 2015-SFR 2
Debt Instrument [Line Items]
Loan amount								$ 477,700,000
Debt instrument term								30 years
Number of classes of certificates \| nonperforming_loan								7
Proceeds from asset-backed securitizations								$ 477,700,000
Issuance costs for the sale of asset-backed securitizations								$ 11,300,000
Asset-backed securitizations													476,920,000
Single-family properties													$ 681,400,000
Weighted-average interest rate								4.36%
Single family homes
Debt Instrument [Line Items]
Number of properties \| single_family_property	34,599	34,599	34,599	34,599	34,599								38,780	34,599
Single-family properties	$ 5,710,671,000	$ 5,710,671,000	$ 5,710,671,000	$ 5,710,671,000	$ 5,710,671,000								$ 6,289,938,000	$ 5,710,671,000
Single family homes \| 2014-SFR 1
Debt Instrument [Line Items]
LIBOR floor rate												0.25%
Number of debt instrument extension options \| extension_option												3
Period of extension options													12 months
Number of classes of certificates \| pass_through_certificate												7
Proceeds from asset-backed securitizations												$ 481,000,000
Issuance costs for the sale of asset-backed securitizations												$ 14,900,000
Number of properties \| property												3,852
Asset-backed securitizations													$ 473,755,000
Single-family properties													$ 606,900,000
Single family homes \| 2014-SFR 1 \| LIBOR
Debt Instrument [Line Items]
Interest margin on reference rate												1.54%
Single family homes \| 2015-SFR 1
Debt Instrument [Line Items]
Proceeds from asset-backed securitizations									$ 552,800,000.0
Issuance costs for the sale of asset-backed securitizations									$ 13,300,000
Single family homes \| 2014-SFR 2
Debt Instrument [Line Items]
Loan amount																	$ 513,300,000.0
Debt instrument term											10 years
Proceeds from asset-backed securitizations											$ 487,700,000
Issuance costs for the sale of asset-backed securitizations											$ 12,900,000
Number of properties											4,487		4,487					4,487
Asset-backed securitizations													$ 507,305,000
Weighted-average interest rate																4.42%
Minimum coverage ratio											1.20
Period of debt service considered for debt coverage ratio											12 months
Payments for purchase of certificates											$ 25,700,000
Single family homes \| 2014-SFR 3
Debt Instrument [Line Items]
Loan amount										$ 528,400,000.0
Debt instrument term										10 years
Issuance costs for the sale of asset-backed securitizations										$ 12,900,000
Number of properties \| property										4,503			4,503
Asset-backed securitizations													$ 523,109,000
Single-family properties													729,800,000
Weighted-average interest rate										4.40%
Single family homes \| Special Purpose Entity \| 2015-SFR 2
Debt Instrument [Line Items]
Number of properties \| single_family_property								4,125
Estimate of Fair Value Measurement \| 2014-SFR 1
Debt Instrument [Line Items]
Interest rate cap agreement													0
Estimate of Fair Value Measurement \| 2014-SFR 2
Debt Instrument [Line Items]
Single-family properties													$ 672,300,000
Ellington portfolio acquisition
Debt Instrument [Line Items]
Debt instrument term	5 years
Purchase price				$ 126,000,000
Number of properties treated as collateral		583			583
Interest rate	4.06%	4.06%	4.06%	4.06%	4.06%									4.06%
Minimum debt service coverage ratio			1.47
Ellington portfolio acquisition \| Notes Payable
Debt Instrument [Line Items]
Debt instrument term	5 years
Purchase price				$ 51,600,000
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate	3.00%	3.00%	3.00%	3.00%	3.00%								3.18%	3.00%
Credit facility maximum borrowing capacity						$ 500,000,000							$ 800,000,000.0						$ 800,000,000
Percentage used to calculate borrowing base													50.00%
Credit facility	$ 207,000,000	$ 207,000,000	$ 207,000,000	$ 207,000,000	$ 207,000,000								$ 0	$ 207,000,000
Minimum liquidity requirement for debt covenant						15,000,000
Debt covenant, minimum liquidity requirement for cash and cash equivalents						$ 7,500,000
Maximum leverage ratio						1.0
Debt covenant, minimum required tangible net worth						85.00%
Debt covenant, percentage of additional equity capital raised on or after September 30, 2013 that is used in calculation of tangible net worth						85.00%
Until March 2017 \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Description of variable rate basis						30 day LIBOR
Basis spread on variable rate						2.75%							2.75%
March 2017 and Thereafter \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Description of variable rate basis						30 day LIBOR
Basis spread on variable rate						3.125%							3.125%
Subsequent Events \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit extension period							3 months