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Commitments and Contingencies (Details 2)	12 Months Ended
	Dec. 31, 2015 USD ($) single_family_property	Dec. 31, 2014 USD ($) single_family_property	Dec. 31, 2013 USD ($)
Commitments and contingencies
Number of properties | single_family_property	38,780	34,599
Company contributions	$ 500,000	$ 300,000	$ 200,000
Commitment to renovate homes
Commitments and contingencies
Aggregate outstanding commitment	$ 0	$ 4,100,000
Commitment to acquire properties
Commitments and contingencies
Number of properties | single_family_property	12	703
Aggregate purchase price	$ 1,700,000	$ 110,900,000

X

- Definition

Aggregate Purchase Price

+ References

No definition available.

+ Details

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

X

- Definition

Represents the amount of outstanding Commitment.

+ References

No definition available.

+ Details

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

X

- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

Name:	us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=amh_CommitmentToAcquirePropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: