Number of Securities Acquired

No definition available.

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Balance Type:	na
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- Definition

Number of marketable securities sold during the period.

+ References

No definition available.

+ Details

Name:	arcp_NumberOfSecuritiesSold
Namespace Prefix:	arcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

+ Details

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

- Definition

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

+ Details

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

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

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

- Details

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Balance Type:	na
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- Details

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Namespace Prefix:
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- Details

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Investment Securities, at Fair Value - Narrative (Details) (USD $)	12 Months Ended			0 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 29, 2014 security	Feb. 07, 2014 security	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	$ 58,646,000us-gaap_AvailableForSaleSecurities	$ 62,067,000us-gaap_AvailableForSaleSecurities				$ 58,646,000us-gaap_AvailableForSaleSecurities
Proceeds from sale of investment securities	159,752,000	119,542,000	0
Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired	10	10
Investment securities, at fair value	58,646,000	60,583,000				58,646,000
Commercial Mortgage Backed Securities [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value	58,646,000	60,600,000				58,646,000
Commercial Mortgage Backed Securities [Member] \| Cole Capital [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities sold				15
Proceeds from sale of investment securities				158,000,000
Securities, gross realized gain (loss)				6,200,000
Commercial Mortgage Backed Securities [Member] \| Cole Real Estate Investments, Inc. [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities acquired					15
Commercial Mortgage Backed Securities [Member] \| Cole Real Estate Investments, Inc. [Member] \| Estimate of Fair Value Measurement [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value					151,200,000
Investments In Real Estate Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Investment securities, at fair value		1,484,000
Equity method investment, realized gain (loss) on sale						$ 178,000