Amount of Cash

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- Definition

Debt Instrument, Maximum Borrowing Capacity

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- Definition

Debt to be Extinguished Upon Consummation of Merger

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- Definition

Fees To The Manager, Based on Average Greater than the Unadjusted Book Value Of the Company's Assets

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- Definition

Fees To The Manager, Based on Average Less than the Unadjusted Book Value Of the Company's Assets

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- Definition

Percentage of Considerating Paind in Shares

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- Definition

Percentage of Considerating Paid in Stock

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- Definition

Percentage of the Shares Voting, in Favor of the Merger

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No definition available.

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- Definition

Percentage of Total Outstanding Shares Voting, in Favor of the Merger

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- Definition

Related Party Transaction, Subordinated Participation Fee Earned by Related Party

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No definition available.

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- Definition

Share of Common Stock

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No definition available.

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- Definition

Unadjusted Book Value of Assets

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- Definition

Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 24

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

For an acquired entity, price of a single share of a number of saleable stocks of a company.

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No definition available.

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- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

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- Definition

The amount of a lien or mortgage outstanding as of the balance sheet date on a specific property.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule III)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 970

-SubTopic 360

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-28)

-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

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Merger Agreement Merger Agreement (Details) (USD $)			18 Months Ended							12 Months Ended				1 Months Ended			18 Months Ended
Merger Agreement Merger Agreement (Details) (USD $)	Feb. 28, 2013	Dec. 31, 2012	Feb. 28, 2013 ARCT III Merger [Member]	Dec. 14, 2012 ARCT III Merger [Member]	Sep. 06, 2011 ARCT III Merger [Member]	Feb. 14, 2013 Unsecured Debt [Member] ARCT III [Member]	Feb. 14, 2013 Term Loan [Member] ARCT III [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Feb. 14, 2013 Revolving Credit Facility [Member] ARCT III [Member]	Dec. 31, 2012 Option Two [Member] ARCT III Merger [Member]	Dec. 31, 2012 Common Stock Option One [Member] ARCT III Merger [Member]	Dec. 31, 2012 Cash [Member] Option Two [Member] ARCT III Merger [Member]	Feb. 26, 2013 ARCP [Member]	Dec. 31, 2012 ARCP [Member] ARCT III Merger [Member]	Feb. 14, 2013 ARCP [Member] ARCT III Merger [Member]	Feb. 26, 2013 ARCT III [Member]	Feb. 28, 2013 ARCT III [Member] ARCT III Merger [Member]	Dec. 14, 2012 Subordinated Participation Fees [Member] ARCT III Merger [Member]	Dec. 31, 2011 Maximum [Member] ARCT III [Member] ARCT III Merger [Member]	Dec. 31, 2011 Minimum [Member] ARCT III Merger [Member]	Dec. 14, 2012 Net Sale Proceeds, after Return of Capital Contributions and Annual Targeted Investor Return [Member] American Realty Capital Advisors III LLC [Member] ARCT III Merger [Member]	Feb. 28, 2013 External Credit Rating, Non Investment Grade [Member] Maximum [Member]	Feb. 28, 2013 External Credit Rating, Non Investment Grade [Member] Minimum [Member]	Feb. 28, 2013 External Credit Rating, Investment Grade [Member] Maximum [Member]	Feb. 28, 2013 External Credit Rating, Investment Grade [Member] Minimum [Member]	Feb. 28, 2013 Reduction of Credit Facility [Member]	Dec. 31, 2012 Line of Credit [Member]	Sep. 07, 2011 Line of Credit [Member] Revolving Credit Facility [Member]
Business Acquisition [Line Items]
Convertible stock issued during period, shares											0.95
Convertible stock issued during period, value												$ 12.00
Percentage of Consideration Paid in Stock										30.00%				30.00%
Subordinated Participation Fee Earned by Related Party																					$ 59,000,000
Percentage of Consideration Paid in Shares														70.00%
Share Price, ARCP Common Stock Assumption															$ 12.90			$ 12.26
Asset Management Fee Percentage, Option 1																	0.50%
Unadjusted Book Value of Assets																			3,000,000,000	3,000,000,000
Asset Management Fee Percentage, Option 2			0.40%
Purchase Price of Furniture, Fixtures and all Other Assets		1,200,000			5,800,000
Maximum out of pocket transaction expenses				10,000,000
Line of Credit Facility, Current Borrowing Capacity						875,000,000	525,000,000		350,000,000
Debt Instrument, Basis Spread on Variable Rate																						22000.00%	16000.00%	20000.00%	11500.00%
Debt to be Extinguished Upon Consummation of Merger																												150,000,000
Real Estate and Accumulated Depreciation, Amount of Encumbrances		141,000																									124,600,000
Bridge Loan	200,000,000																									125,000,000
Debt Instrument, Maximum Borrowing Capacity	1,200,000,000
Line of Credit Facility, Maximum Borrowing Capacity						1,000,000,000																					150,000,000
Real Estate and Accumulated Depreciation, Amount of Encumbrances								$ 42,400,000
Percentage of the Shares Voting, in Favor of the Merger													97.00%			98.00%
Percentage of Total Outstanding Shares Voting, in Favor of the Merger													100.00%			68.00%