Discontinued Operations and Properties Held for Sale (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013 Property	Dec. 31, 2012 Property
Discontinued Operations and Disposal Groups [Abstract]
Number Of Real Estate Properties, Held for Sale	1	1
Sale price of disposal in cash	$ 0.7

Disposal Group, Including Discontinued Operation, Agreed Upon Sales Price

No definition available.

Name:	arcp_DisposalGroupIncludingDiscontinuedOperationAgreedUponSalesPrice
Namespace Prefix:	arcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration