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

Name:	amh_DebtInstrumentCovenantLiquidityRequiredAmount
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

Name:	amh_DebtInstrumentCovenantMinimumTangibleNetWorth
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
Period Type:	instant

- 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

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

- Definition

Represents the ratio of monthly principal payment of loan.

+ References

No definition available.

+ Details

Name:	amh_DebtInstrumentMonthlyPrincipalPaymentRatio
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

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

- Definition

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

+ References

No definition available.

+ Details

Name:	amh_DebtInstrumentPercentagePortionOfPrincipalAmountForWhichMonthlyPaymentIsRequired
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

Name:	amh_DebtInstrumentPeriodOfExtensionOptions
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

Name:	amh_EffectivePercentageOfInterestRateCapAgreementCashFlowHedgedByDerivatives
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

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

- Definition

Represents the London interbank offered rate, floor.

+ References

No definition available.

+ Details

Name:	amh_LondonInterbankOfferedRateFloor
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

Name:	amh_MinimumDebtServiceCoverageRatio
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

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

- Definition

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

+ References

No definition available.

+ Details

Name:	amh_NumberOfClassesOfCertificates
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

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Number Of Real Estate Properties Acquired

+ References

No definition available.

+ Details

Name:	amh_NumberOfRealEstatePropertiesAcquired
Namespace Prefix:	amh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Property Leased.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Details

Name:	amh_ProformaDebtInstrumentLineItems
Namespace Prefix:	amh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
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

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- 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

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
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

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

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313

+ Details

Name:	us-gaap_DerivativeAssets
Namespace Prefix:	us-gaap_
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

Name:	us-gaap_DerivativeCapInterestRate
Namespace Prefix:	us-gaap_
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
Namespace Prefix:	us-gaap_
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

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

+ Details

Name:	us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet
Namespace Prefix:	us-gaap_
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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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.

+ References

+ Details

Name:	us-gaap_NotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

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

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix:	us-gaap_
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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfAccountsReceivableSecuritization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=amh_SpecialPurposeEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=amh_EllingtonPortfolioAcquisitonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=amh_SeniorSecuredRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtSecurityAxis=amh_AssetBackedSecuritizationsMay2014SecuritizationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtSecurityAxis=amh_AssetBackedSecuritizationsNovember2014SecuritizationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtSecurityAxis=amh_AssetBackedSecuritizationsSeptember2014SecuritizationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=amh_SingleFamilyHomesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt (Details) (USD $)	12 Months Ended	0 Months Ended	1 Months Ended
Debt (Details) (USD $)	Dec. 31, 2014 property	Dec. 31, 2014 property	May 31, 2013	May 31, 2014 item property	Sep. 30, 2014 property	Nov. 30, 2014 property	Dec. 31, 2013 property	Sep. 30, 2013	Mar. 07, 2013
Proforma Debt Instrument
Total asset-backed securitizations	$ 1,519,390,000amh_AssetBackedSecuritization	$ 1,519,390,000amh_AssetBackedSecuritization
Note payable	51,644,000us-gaap_NotesPayable	51,644,000us-gaap_NotesPayable
Credit facility	207,000,000us-gaap_LineOfCredit	207,000,000us-gaap_LineOfCredit					375,000,000us-gaap_LineOfCredit
Total debt	1,778,034,000us-gaap_LongTermDebt	1,778,034,000us-gaap_LongTermDebt					375,000,000us-gaap_LongTermDebt
Gross proceeds from the sale of certificates	1,497,039,000
Number of properties	34,599us-gaap_NumberOfRealEstateProperties	34,599us-gaap_NumberOfRealEstateProperties					23,268us-gaap_NumberOfRealEstateProperties
Interest rate cap agreement	14,000us-gaap_DerivativeAssets	14,000us-gaap_DerivativeAssets
Payments for purchase of certificates	3,315,000
Net book value of collateral homes	5,710,671,000us-gaap_RealEstateInvestmentPropertyNet	5,710,671,000us-gaap_RealEstateInvestmentPropertyNet					3,861,422,000us-gaap_RealEstateInvestmentPropertyNet
Cash consideration	74,356,000
Ellington portfolio acquisiton
Proforma Debt Instrument
Note payable	51,644,000	51,644,000
Debt instrument initial term		5 years
Purchase price		126,000,000
Cash consideration		74,400,000
Debt instrument term		5 years
Number of properties treated as collateral		583
Interest rate (as percent)	4.06%	4.06%
Minimum debt service coverage ratio	1.56
Number of properties acquired	914	914
Percentage of properties leased as of acquisition date	96.30%	96.30%
Note \| Ellington portfolio acquisiton
Proforma Debt Instrument
Purchase price		51,600,000
Single family homes
Proforma Debt Instrument
Number of properties	34,599	34,599					23,268
Net book value of collateral homes	5,710,671,000	5,710,671,000					3,861,422,000
2014-SFR 1
Proforma Debt Instrument
Total asset-backed securitizations	478,565,000	478,565,000
Debt instrument initial term			2 years
Interest rate cap agreement strike rate	3.85%	3.85%
Effective percentage of interest rate cap agreements hedged as cash flow derivative	100.00%
Estimated amount of loss to be reclassified as increase to interest expense over next 12 months	100,000	100,000
Debt instrument term			2 years
2014-SFR 1 \| Fair Value
Proforma Debt Instrument
Interest rate cap agreement	10,000	10,000
2014-SFR 1 \| Single family homes
Proforma Debt Instrument
Gross proceeds from the sale of certificates			481,000,000
LIBOR floor rate (as a percent)				0.25%
Number of extension options				3
Period of extension options				12 months
Number of classes of certificates				7
Issuance costs for the sale of certificates				14,900,000
Number of properties				3,852
Net book value of collateral homes	627,000,000	627,000,000
2014-SFR 2
Proforma Debt Instrument
Total asset-backed securitizations	512,435,000	512,435,000
2014-SFR 2 \| Fair Value
Proforma Debt Instrument
Net book value of collateral homes	692,600,000	692,600,000
2014-SFR 2 \| Single family homes
Proforma Debt Instrument
Gross proceeds from the sale of certificates					487,700,000
Debt instrument initial term					10 years
Issuance costs for the sale of certificates					12,900,000
Number of properties					4,487
Loan amount					513,300,000
Minimum coverage ratio					1.20
Weighted-average interest rate					4.42%
Period of debt service considered for debt coverage ratio					12 months
Payments for purchase of certificates					25,700,000
Debt instrument term					10 years
2014-SFR 3
Proforma Debt Instrument
Total asset-backed securitizations	528,390,000	528,390,000
2014-SFR 3 \| Single family homes
Proforma Debt Instrument
Debt instrument initial term						10 years
Issuance costs for the sale of certificates						12,900,000
Number of properties						4,503
Loan amount						528,400,000
Weighted-average interest rate						4.40%
Net book value of collateral homes	752,800,000	752,800,000
Debt instrument term						10 years
LIBOR \| 2014-SFR 1 \| Single family homes
Proforma Debt Instrument
Interest margin on reference rate (as a percent)	1.54%	1.54%		1.54%
Borrower \| Note
Proforma Debt Instrument
Loan amount				481,000,000
Borrower \| 2014-SFR 1 \| Note
Proforma Debt Instrument
Number of floating rate components of loan				6
Interest rate cap agreement initial period	2 years
Ratio of monthly principal payment of loan				0.083
Portion of principal amount for which monthly payment is required (as a percent)				1.00%
Number of properties				3,852
Minimum debt yield required to be maintained (as a percent)				6.68%
Senior Secured Revolving Credit Facility
Proforma Debt Instrument
Credit facility	207,000,000	207,000,000
Credit facility amount, maximum								800,000,000	500,000,000
Percentage of properties used to calculate borrowing base	50.00%
Debt covenant, minimum liquidity requirement	15,000,000	15,000,000
Debt covenant, minimum liquidity requirement for cash and cash equivalents	$ 7,500,000	$ 7,500,000
Maximum leverage ratio	1.0
Debt covenant, minimum required tangible net worth (as a percent)	85.00%	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%	85.00%
Senior Secured Revolving Credit Facility \| Until March 2017
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
Proforma Debt Instrument
Debt instrument, description of variable rate	30 day LIBOR
Debt instrument, basis spread on variable rate (as a percent)	3.125%