Related Party Transactions and Arrangements (Details) (USD $)	12 Months Ended						12 Months Ended		0 Months Ended			12 Months Ended		1 Months Ended	12 Months Ended		0 Months Ended	2 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended								0 Months Ended											6 Months Ended	12 Months Ended		12 Months Ended
	Feb. 28, 2014	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2013	Dec. 31, 2013 RCS Capital [Member]	Sep. 06, 2012 Sponsor [Member]	Feb. 28, 2013 Special Limited Partner [Member]	Dec. 31, 2013 ARC Real Estate Partners, LLC [Member] Operating Partnership Unit [Member]	Dec. 31, 2012 ARC Real Estate Partners, LLC [Member] Operating Partnership Unit [Member]	Dec. 31, 2013 American Realty Capital Advisors III LLC [Member] Advisor [Member]	Feb. 28, 2013 American Realty Capital Advisors III LLC [Member] Advisor [Member]	Feb. 28, 2013 ARC Advisory Services, LLC [Member]	Dec. 31, 2012 ARC Advisory Services, LLC [Member]	Dec. 31, 2013 Realty Captial Securities, LLC and American Realty Capital Advisors, LLC [Member]	Feb. 28, 2013 Sale of ARCT III OP Units [Member]	Feb. 28, 2013 Class B Units [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Dec. 31, 2012 Class B Units [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Jun. 27, 2013 Portfolio Acquisitions [Member]	Feb. 28, 2013 ARCT III Merger [Member]	Dec. 31, 2013 ARCT III Merger [Member]	Feb. 28, 2013 ARCT III Merger [Member] ARCP [Member]	Feb. 28, 2013 ARCP Merger [Member] American Realty Capital III Special Limited Partnership, LLC [Member] Common Stock [Member] Entity Wholly Owned by Sponsor [Member]	Feb. 28, 2013 ARCP Merger [Member] Post-Conversion [Member] American Realty Capital III Special Limited Partnership, LLC [Member] Common Stock [Member] Entity Wholly Owned by Sponsor [Member]	Feb. 28, 2013 ARCP Merger [Member] Post-Conversion [Member] Class B Units [Member] American Realty Capital III Special Limited Partnership, LLC [Member] Common Stock [Member] Entity Wholly Owned by Sponsor [Member]	Feb. 28, 2013 ARCP Merger [Member] Pre-Conversion [Member] American Realty Capital III Special Limited Partnership, LLC [Member] Common Stock [Member] Entity Wholly Owned by Sponsor [Member]	Dec. 31, 2013 Gross Proceeds, Initial Public Offering [Member] Realty Capital Securities, LLC [Member] Dealer Manager [Member]	Dec. 31, 2013 Pre-tax Non-compounded Return on Capital Contribution [Member] Annual Targeted Investor Return [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Feb. 28, 2013 Pre-tax Non-compounded Return on Capital Contribution [Member] Annual Targeted Investor Return [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Feb. 28, 2013 Pre-tax Non-compounded Return on Capital Contribution [Member] Asset Management Fees [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Jul. 02, 2013 Average Invested Assets [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Dec. 31, 2013 Amount Available or Outstanding Under Financing Arrangement [Member] ARC Properties Advisors, LLC [Member] Manager [Member]	Dec. 31, 2013 Contract Purchase Price [Member] ARC Properties Advisors, LLC [Member] Manager [Member]	Dec. 31, 2013 Gross Revenue, Stand-alone Single-tenant Net Leased Properties [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Dec. 31, 2013 Gross Revenue, Excluding Stand-alone Single-tenant Net Leased Properties [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Dec. 31, 2013 Gross Proceeds, Common Stock [Member] Realty Capital Securities, LLC [Member] Dealer Manager [Member]	Feb. 28, 2013 Maximum [Member] ARCT III Merger [Member] ARCP [Member]	Dec. 31, 2013 Maximum [Member] Gross Revenue, Managed Properties [Member] American Realty Capital Advisors III LLC [Member] Advisor [Member]	Dec. 31, 2013 Securities (Assets) [Member]	Jun. 04, 2013 Securities (Assets) [Member]	Jun. 30, 2013 Financial Advisory Services [Member] Realty Captial Securities, LLC and American Realty Capital Advisors, LLC [Member]	Dec. 31, 2012 Financial Advisory Services [Member] Realty Captial Securities, LLC and American Realty Capital Advisors, LLC [Member]	Dec. 31, 2013 Financial Advisory Services [Member] Realty Captial Securities, LLC and American Realty Capital Advisors, LLC [Member]	Dec. 31, 2012 Legal Services [Member] ARC Advisory Services, LLC [Member]
Related Party Transaction [Line Items]
Real Estate Investment, Aggregate Purchase Price		$ 5,162,688,000	[1],[2]																	$ 773,900,000
Merger Expenses															2,000,000	500,000																										500,000	100,000		500,000
Business Acquisition, Transaction Costs															300,000
Business Combination, Acquisition Related Costs, Payment														1,700,000
Merger Expenses Agreed To																																											600,000	600,000
Reinvested Dividend, Amount																																								100,000
Available-for-sale Equity Securities, Amortized Cost Basis																																								8,500,000
Common stock held by related party, percent										5.12%	1.39%
Related Party Transaction, Sales Commissions Earned by Related Party, Percentage of Benchmark																												7.00%									3.00%
Related Party Transaction, Acquisition Fees Earned by Related Party, Percentage of Benchmark																																		1.00%
Related Party Transaction, Financing Coordination Fees Earned by Related Party, Percentage of Benchmark																																	0.75%
Asset Management Fee Percentage, Option 1																							0.50%
Asset Management Fee Percentage, Option 2																					0.40%
Unadjusted Book Value of Assets																																						3,000,000,000
Related Party Transaction, Asset Management Fees Earned by Related Party, Percentage of Benchmark																																0.75%
Related Party Transaction, Cumulative Capital Investment Return, as a Percentage of Benchmark																													6.00%	6.00%
Antidilutive securities excluded from computation of earnings per share		8,960,485		1,621,349														603,599	145,022
Related Party Transaction, Expenses from Transactions with Related Party												2,300,000																			9,900,000
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Issuance of Units																								7,300,000	7,300,000	711,190	7,600,000
Excess Annualized Core Earnings, Percentage		20.00%
Related Party Transaction, Property Management Fees Earned by Related Party, Percentage of Benchmark																																			2.00%	4.00%
Related Party Transaction, Oversight Fees Earned by Related Party, Percentage of Benchmark																																							1.00%
Related Party Transactions, Property Management Services Service Period Extension, Days													60 days
Administrative Support Agreement Period, Years								1 year
Business Acquisition, Cost of Acquired Entity, Purchase Price																					5,800,000
Related Party Transaction, Cumulative Capital Investment Return																														557,300,000
Related Party Transaction, Proceeds from Related Party																	98,400,000
Equity Ownership Holding Period, Years	1 year
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment						1,000,000
Consideration To Affiliate For Internalization		5,738,000		0	0																	(3,000,000)
Contributions from non-controlling interest holders		0		0	2,000				800,000
ARCP OP Units Issued to Special Limited Partnership						56,797
Available-for-sale Debt Securities, Amortized Cost Basis		62,041,000																																						1,589,000	10,000,000
Investment securities, at fair value		62,067,000		41,654,000																																				1,484,000
Merger and other transaction related		$ 256,662,000		$ 2,603,000	$ 0		$ 17,800,000									$ 300,000

[1] Total portfolio excludes one vacant property contributed in September 2011, which was classified as held for sale as of December 31, 2013.

[2] Contract purchase price, excluding acquisition and transaction related costs.