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Subsequent Events (Details) - Subsequent Event $ in Millions	1 Months Ended
	Oct. 31, 2022 USD ($) property
Subsequent Event [Line Items]
Number of properties acquired	154
Cash paid for deposits on land option contracts | $	$ 54.2
Number of internally developed properties developed	121
Number of properties acquired from third party developers	19
Number of real estate properties sold	92
Proceeds from sale of real estate | $	$ 27.3

X

- Definition

Number Of Internally Developed Properties

+ References

No definition available.

+ Details

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X

- Definition

Number Of Newly Constructed Homes Acquired From Third Parties Developers

+ References

No definition available.

+ Details

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Namespace Prefix:	amh_
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X

- Definition

Number Of Properties Acquired

+ References

No definition available.

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X

- Definition

Number Of Real Estate Properties Sold

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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X

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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