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Mergers and Acquisitions (Detail) (USD $)
 9 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 11 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Sep. 30, 2013
Property
Mar. 13, 2014
Sep. 30, 2014
Feb. 28, 2013
Aug. 08, 2013
Company
Nov. 05, 2013
Sep. 30, 2014
Feb. 07, 2014
Jan. 03, 2014
Jun. 30, 2014
Oct. 03, 2013
Property
Jul. 24, 2013
Property
Sep. 30, 2014
Property
May 19, 2014
May 20, 2014
May 16, 2014
Dec. 31, 2013
Business Acquisition [Line Items]                                  
Number of properties acquired 71us-gaap_NumberOfBusinessesAcquired                                
Common stock, par value $ 0.01us-gaap_CommonStockParOrStatedValuePerShare   0.01us-gaap_CommonStockParOrStatedValuePerShare       $ 0.01us-gaap_CommonStockParOrStatedValuePerShare           $ 0.01us-gaap_CommonStockParOrStatedValuePerShare       $ 0.01us-gaap_CommonStockParOrStatedValuePerShare [1]
Spinoff Of Multi Tenant Shopping Center Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Common stock, par value   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= arcp_SpinoffOfMultiTenantShoppingCenterPortfolioMember		                              
Ownership percentage   25.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= arcp_SpinoffOfMultiTenantShoppingCenterPortfolioMember		                              
Spin-off, finalization of documentation period   30 days                              
Series F Preferred Stock [Member]                                  
Business Acquisition [Line Items]                                  
Preferred stock, dividend rate, percentage     6.70%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember		                            
Common Stock [Member]                                  
Business Acquisition [Line Items]                                  
Shares issued (in shares) 63,055,919us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 [1]   662,305,318us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 [2]                            
Common Stock [Member] | Spinoff Of Multi Tenant Shopping Center Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Spin-off, shares   $ 10arcp_BusinessDisposalSpinoffShares
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= arcp_SpinoffOfMultiTenantShoppingCenterPortfolioMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                              
Op Units [Member] | Spinoff Of Multi Tenant Shopping Center Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Spin-off, shares   $ 10arcp_BusinessDisposalSpinoffShares
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= arcp_SpinoffOfMultiTenantShoppingCenterPortfolioMember
/ us-gaap_StatementEquityComponentsAxis
= arcp_OpUnitsMember		                              
ARCP Merger [Member] | Member Units [Member] | American Realty Capital III Special Limited Partnership, LLC [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares       7,300,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalIiiSpecialLimitedPartnershipLlcMember
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Units minimum holding period     1 year                            
Inland Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred         $ 501,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ dei_LegalEntityAxis
= arcp_InlandPortfolioMember		                        
Number of properties acquired         10us-gaap_NumberOfBusinessesAcquired
/ dei_LegalEntityAxis
= arcp_InlandPortfolioMember		                        
ARCP Merger [Member] | Member Units [Member]                                  
Business Acquisition [Line Items]                                  
Convertible stock issued during period, shares       95.00%arcp_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConversionPercentagePerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Business combination, consideration transferred, amount per share       12.00arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Payments to acquire businesses, gross       350,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Business combination, acquiree shares exchanged for cash       29,200,000arcp_BusinessCombinationAcquireeSharesExchangedForCash
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Percentage of shares outstanding       16.50%arcp_BusinessCombinationPercentageOfAcquireeSharesExchangedForCash
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Business combination, acquiree shares equivalent of acquirer shares       27,700,000arcp_BusinessCombinationAcquireeSharesEquivalentOfAcquirerShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares       140,700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Business combination, acquiree shares exchanged for acquirer shares       148,100,000arcp_BusinessCombinationAcquireeSharesExchangedForAcquirerShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
CapLease [Member]                                  
Business Acquisition [Line Items]                                  
Payments to acquire businesses, gross           920,697,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member		 920,697,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member		 [3]                    
CapLease [Member] | Common Stock [Member]                                  
Business Acquisition [Line Items]                                  
Class of warrant or right, value received by each warrant or right (in dollars per share)           $ 8.50arcp_ClassofWarrantorRightValueReceivedbyEachWarrantorRight
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember		                      
CapLease [Member] | Preferred Stock [Member]                                  
Business Acquisition [Line Items]                                  
Class of warrant or right, value received by each warrant or right (in dollars per share)           $ 25.00arcp_ClassofWarrantorRightValueReceivedbyEachWarrantorRight
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember		                      
CapLease [Member] | Member Units [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred, amount per share           $ 8.50arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_MemberUnitsMember		                      
Payments to acquire businesses, gross           920,700,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_MemberUnitsMember		                      
Class of warrant or right, value received by each warrant or right (in dollars per share)           $ 8.50arcp_ClassofWarrantorRightValueReceivedbyEachWarrantorRight
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_MemberUnitsMember		                      
Cole Merger [Member]                                  
Business Acquisition [Line Items]                                  
Payments to acquire businesses, gross               181,775,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member		                  
Business combination, consideration transferred               7,467,643,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member		                  
Cole Merger [Member] | Common Stock [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred, amount per share               $ 13.82arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Payments to acquire businesses, gross               181,800,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares           520,800,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		   520,800,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Business acquisition, equity interest issued or issuable, per share conversion rate               $ 1.0929arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Business acquisition, percentage of voting interests acquired               98.00%arcp_BusinessAcquisitionPercentageofVotingInterestsAcquiredReceiptofShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Percent of voting interests that received cash               2.00%arcp_BusinessAcquisitionPercentageofVotingInterestsAcquiredReceiptofCash
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                  
Cole Merger [Member] | Common Stock [Member] | Executive Officer [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares               365,321us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		                  
Shares issued (in shares)               2,800,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		                  
ARCT IV [Member] | Member Units [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred, amount per share                 $ 9.00arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Payments to acquire businesses, gross                 651,400,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 600,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Units minimum holding period                   2 years              
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 0.5190arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | Contribution and Exchange Agreement [Member]                                  
Business Acquisition [Line Items]                                  
Related party transaction, cumulative capital investment return, threshold percentage       6.00%arcp_RelatedPartyTransactionCumulativeCapitalInvestmentReturnThresholdPercentage
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_RelatedPartyTransactionAxis
= arcp_ContributionandExchangeAgreementMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
ARCT IV [Member] | Member Units [Member] | Series F Preferred Stock [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 42,200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 0.5937arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Preferred stock, dividend rate, percentage                 6.70%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | Class B Units [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 1,200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 2.3961arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Trust IV, Operating Partnership [Member]                                  
Business Acquisition [Line Items]                                  
Subordinated distributions of net sale proceeds                 63,200,000arcp_BusinessCombinationCounterpartyConsiderationEntitledtoReceiveNetReturnofCapital
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Trust IV, Operating Partnership [Member] | Special Limited Partner [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 2,800,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 22.5arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Business acquisition, equity interest issued or issuable, value assigned                 78,200,000us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Trust IV, Operating Partnership [Member] | Series F Preferred Stock [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Advisors III LLC [Member]                                  
Business Acquisition [Line Items]                                  
Related party transaction, cumulative capital investment return                 358,300,000arcp_BusinessCombinationCounterpartyCumulativeReturnofCapital
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVSpecialLimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Real Estate Partners, LLC [Member]                                  
Business Acquisition [Line Items]                                  
Payments to acquire businesses, gross                 750,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalRealEstatePartnersLLCMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Member Units [Member] | American Realty Capital Real Estate Partners, LLC [Member] | Class B Units [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 100,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalRealEstatePartnersLLCMember
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | Common Stock [Member]                                  
Business Acquisition [Line Items]                                  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares                 36,900,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 0.5190arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                
ARCT IV [Member] | Preferred Stock [Member] | Series F Preferred Stock [Member]                                  
Business Acquisition [Line Items]                                  
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 0.5937arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember		                
ARCT IV [Member] | ARC Properties Operating Partnership, L.P. [Member] | Member Units [Member]                                  
Business Acquisition [Line Items]                                  
Conversion of Stock, Shares Converted                 6,700,000us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalPropertiesOperatingPartnershipL.P.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
ARCT IV [Member] | ARC Properties Operating Partnership, L.P. [Member] | Member Units [Member] | Class B Units [Member]                                  
Business Acquisition [Line Items]                                  
Business acquisition, equity interest issued or issuable, per share conversion rate                 $ 2.3961arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalPropertiesOperatingPartnershipL.P.Member
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                
Fortress Investment Group LLC Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred     601,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		               200,300,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		   400,900,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		        
Number of properties acquired                     41us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		   79us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		        
Number of businesses acquired, allocated and assigned                       120arcp_NumberofBusinessesAcquiredAllocatedandAssigned
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		          
Fortress Investment Group LLC Portfolio [Member] | Scenario, Plan [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred                       972,500,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Number of properties acquired                       196us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Inland American Real Estate Trust, Inc. [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred     288,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member		                            
Number of properties acquired     32us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member		                            
Inland American Real Estate Trust, Inc. [Member] | ARCP Inland Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred         2,300,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalInlandPortfolioMember		                        
Inland American Real Estate Trust, Inc. [Member] | ARCP Inland Portfolio [Member] | Scenario, Plan [Member]                                  
Business Acquisition [Line Items]                                  
Number of properties acquired         67us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalInlandPortfolioMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		                        
Inland American Real Estate Trust, Inc. [Member] | Inland Portfolio [Member] | ARCP Inland Portfolio [Member]                                  
Business Acquisition [Line Items]                                  
Number of real estate properties         33arcp_NumberofPropertiestobeAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalInlandPortfolioMember
/ dei_LegalEntityAxis
= arcp_InlandPortfolioMember		                        
Cole Credit Property Trust, Inc. [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred, amount per share                           $ 7.25arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member		      
Business combination, consideration transferred                           73,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member		      
Cole Credit Property Trust, Inc. [Member] | Common Stock [Member]                                  
Business Acquisition [Line Items]                                  
Shares issued (in shares)                             13,457,874us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		    
Business combination, equity interest in acquiree, shares                           7,735,069arcp_BusinessCombinationEquityInterestinAcquireeShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		      
Business combination, step acquisition, equity interest in acquiree, including subsequent acquisition, percentage                           77.00%us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 90.00%us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		    
Number of shares greater than 90% of voting interest acquired                             1arcp_NumberofSharesGreaterthanNinetyPercentofVotingInterestAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		    
Red Lobster Portfolio [Member] | ARC Properties Operating Partnership, L.P. [Member]                                  
Business Acquisition [Line Items]                                  
Business combination, consideration transferred                               $ 1,700,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		  
Red Lobster Portfolio [Member] | ARC Properties Operating Partnership, L.P. [Member] | Scenario, Plan [Member]                                  
Business Acquisition [Line Items]                                  
Number of properties acquired                               500us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		  
Number of Purchase Leasebacks                               522arcp_NumberofPurchaseLeasebacks
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		  
[1] For discussion on the restatement adjustments, see Note 2 - Restatement of Previously Issued Consolidated Financial Statements.
[2] Includes $2.2 million to affiliates for the nine months ended September 30, 2014.
[3] As reported in the Amended 10-K.