Related Party Transactions and Arrangements (Unconsummated Sale of Cole Capital to RCAP) (Details) (USD $)	0 Months Ended
Dec. 04, 2014	Oct. 01, 2014
RCAP Purchase Agreement [Member] \| Affiliated Entity [Member]
Related Party Transaction [Line Items]
Settlement, cash paid	$ 42,700,000
Note receivable	15,300,000
Debt forgiveness	2,000,000
Proceeds from legal settlements, payment received	10,000,000
Cole Capital [Member]
Related Party Transaction [Line Items]
Gross proceeds (at least $700 million)		700,000,000
Maximum earn-out expected contingent consideration		$ 130,000,000

Disposal Group, Including Discontinued Operation, Expected Maximum Consideration, Contingent Consideration

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Proceeds from Legal Settlements, Payment Received

+ References

No definition available.

+ Details

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Namespace Prefix:	arcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 3

-Article 7

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.3)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

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Period Type:	instant

- Definition

Cash received for the settlement of litigation during the current period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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- Details

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