Deferred Costs and Other Intangibles (Details 2) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Amortization expense	$ 13.1	$ 15.1	$ 10.7
Amortization of deferred financing costs	$ 9.4	$ 4.6	$ 3.7

The aggregate amount of amortization of intangible assets and deferred leasing fees.

No definition available.

Name:	amh_AmortizationOfIntangibleAssetsAndDeferredLeasingFees
Namespace Prefix:	amh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration