Commitments and Contingencies (Details) $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($) lot property
Purchase Commitment [Line Items]
Single-family properties sales in escrow \| property	188
Land lot sales in escrow \| lot	767
Single-family properties sales in escrow, selling price	$ 149.7
Surety bond
Purchase Commitment [Line Items]
Outstanding principal on non-recourse guarantee	$ 235.6
Traditional Acquisition \| Single Family Properties
Purchase Commitment [Line Items]
Number of properties \| property	2
Purchase price of commitment to acquire single-family properties	$ 0.7
Traditional Acquisition \| Land
Purchase Commitment [Line Items]
Purchase price of commitment to acquire single-family properties	$ 80.5
Bulk Acquisition \| Single Family Properties
Purchase Commitment [Line Items]
Number of properties \| property	1,673
Purchase price of commitment to acquire single-family properties	$ 479.8

Expected Proceeds From Sale of Property Held-for-sale

No definition available.

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

- Definition

Number of Land Lots Held-for-Sale In Escrow

+ References

No definition available.

+ Details

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

- Definition

Number of Real Estate Properties Held-for-Sale In Escrow

+ References

No definition available.

+ Details

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

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482425/460-10-50-4

+ Details

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

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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

- 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

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

- 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

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_SuretyBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=srt_SingleFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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