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Mergers and Acquisitions (Details) (USD $)
 12 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
May 20, 2014
Feb. 28, 2013
Jun. 27, 2013
property
Nov. 05, 2013
Jan. 08, 2014
property
Oct. 03, 2013
property
Jul. 24, 2013
property
Jan. 08, 2014
Jan. 03, 2014
Feb. 07, 2014
Aug. 08, 2013
property
company
May 19, 2014
May 15, 2014
property
Mar. 13, 2014
May 21, 2014
Apr. 04, 2014
Business Acquisition [Line Items]                                        
Shares issued (in shares) 138,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 47,161,562us-gaap_StockIssuedDuringPeriodSharesNewIssues 3,737,500us-gaap_StockIssuedDuringPeriodSharesNewIssues 7,147,034us-gaap_StockIssuedDuringPeriodSharesNewIssues                                
Common stock, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare                                    
Common Stock [Member]                                        
Business Acquisition [Line Items]                                        
Shares issued (in shares) 662,305,318us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 [1] 78,215,719us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 164,775,688us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                                  
Common Stock [Member] | Cole Credit Property Trust, Inc. [Member]                                        
Business Acquisition [Line Items]                                        
Shares issued (in shares)         13,457,874us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ dei_LegalEntityAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                              
Step acquisition, equity interest in acquiree, including subsequent acquisition, percentage         90.00%us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
/ dei_LegalEntityAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                              
Number of shares greater than 90% of voting interest acquired         1arcp_NumberofSharesGreaterthanNinetyPercentofVotingInterestAcquired
/ dei_LegalEntityAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                              
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		                            
Consideration transferred, amount per share (in dollars per share)           $ 12.00arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
Fair value of consideration given- cash           $ 350,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
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		                            
Acquiree shares equivalent of acquirer shares           27,700,000arcp_BusinessCombinationAcquireeSharesEquivalentOfAcquirerShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
Equity interest issued or issuable (in shares)           140,700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
Acquiree shares exchanged for acquirer shares           148,100,000arcp_BusinessCombinationAcquireeSharesExchangedForAcquirerShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
ARCP Merger [Member] | Member Units [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Convertible stock issued during period, shares           95.00%arcp_BusinessCombinationConsiderationTransferredEquityInterestsIssuedandIssuableConversionPercentagePerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
GE Capital Portfolio [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)             447us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember		                          
Purchase price             773,900,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember		                          
GE Capital Portfolio [Member] | ARCT IV [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies) 924us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member		                                      
Purchase price 1,400,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member		                                      
CapLease [Member]                                        
Business Acquisition [Line Items]                                        
Fair value of consideration given- cash               920,697,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member		                        
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_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                        
CapLease [Member] | Preferred Units [Member]                                        
Business Acquisition [Line Items]                                        
Class of warrant or right, value received by each warrant or right (in dollars per share)               $ 25arcp_ClassofWarrantorRightValueReceivedbyEachWarrantorRight
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember		                        
CapLease [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Consideration transferred, amount per share (in dollars per share)               $ 8.50arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                        
Fair value of consideration given- cash               920,700,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_CapLeaseInc.Member
/ us-gaap_StatementEquityComponentsAxis
= 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_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                        
Fortress Investment Group LLC Portfolio [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)                 79us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		 41us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		                    
Purchase price                 400,900,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		 200,300,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		   601,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		                
Number of properties acquired, allocated and assigned                     120arcp_NumberofBusinessesAcquiredAllocatedandAssigned
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember		                  
Fortress Investment Group LLC Portfolio [Member] | Scenario, Plan [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)                     196us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		                  
Purchase price                     972,500,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_FortressInvestmentGroupLLCPortfolioMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		                  
ARCT IV [Member] | Common Stock [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         36,900,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		              
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 0.5190arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		              
ARCT IV [Member] | Preferred Units [Member] | Preferred OP Units [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 0.5937arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember		              
ARCT IV [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Consideration transferred, amount per share (in dollars per share)                         $ 9.00arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
ARCT IV [Member] | Member Units [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Fair value of consideration given- cash                         651,400,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
ARCT IV [Member] | Member Units [Member] | Contribution and Exchange Agreement [Member]                                        
Business Acquisition [Line Items]                                        
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] | Limited Partner [Member]                                        
Business Acquisition [Line Items]                                        
Consideration transferred, amount per share (in dollars per share)                         $ 9.00arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
Units minimum holding period                         2 years              
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 0.5190arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
ARCT IV [Member] | Member Units [Member] | Limited Partner [Member] | ARCT IV [Member]                                        
Business Acquisition [Line Items]                                        
Conversion of stock, shares converted                         6,700,000us-gaap_ConversionOfStockSharesConverted1
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
ARCT IV [Member] | Member Units [Member] | Preferred OP Units [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         42,200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ 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] | Preferred OP Units [Member] | Limited Partner [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 0.5937arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ 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]                                        
Equity interest issued or issuable (in shares)                         1,200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
ARCT IV [Member] | Member Units [Member] | Class B Units [Member] | ARCT IV [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 2.3961arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
Cole Real Estate Investments, Inc. [Member]                                        
Business Acquisition [Line Items]                                        
Fair value of consideration given- cash                           181,775,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member		            
Purchase price                           7,467,643,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member		            
Cole Real Estate Investments, Inc. [Member] | Common Stock [Member]                                        
Business Acquisition [Line Items]                                        
Consideration transferred, amount per share (in dollars per share)                           $ 13.82arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		            
Fair value of consideration given- cash                           181,800,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		            
Equity interest issued or issuable (in shares)                           520,800,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		            
Equity interest issued or issuable, per share conversion rate (in dollars per share)                           $ 1.0929arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeRealEstateInvestmentsInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		            
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 Real Estate Investments, Inc. [Member] | Common Stock [Member] | Executive Officer [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                           400,000us-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		            
Inland American Real Estate Trust, Inc. [Member]                                        
Business Acquisition [Line Items]                                        
Number of owned properties 32us-gaap_NumberOfRealEstateProperties
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member		                                      
Purchase price 288,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member		                                      
Inland American Real Estate Trust, Inc. [Member] | Scenario, Plan [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)                             10us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Number of real estate properties planned to acquire                             33arcp_NumberofPropertiestobeAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Purchase price                             501,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Number of real estate properties not acquired 1arcp_NumberofRealEstatePropertiesOutstanding
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		                                      
Inland American Real Estate Trust, Inc. [Member] | Scenario, Plan [Member] | ARC [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)                             67us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ dei_LegalEntityAxis
= arcp_ARCMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Purchase price                             2,300,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_InlandAmericanRealEstateTrustInc.Member
/ dei_LegalEntityAxis
= arcp_ARCMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		          
Cole Credit Property Trust, Inc. [Member]                                        
Business Acquisition [Line Items]                                        
Consideration transferred, amount per share (in dollars per share)                               $ 7.25arcp_BusinessCombinationConsiderationTransferredAmountPerShare
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member		        
Purchase price                               73,200,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member		        
Cole Credit Property Trust, Inc. [Member] | Common Stock [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest in acquiree, shares                               7,735,069arcp_BusinessCombinationEquityInterestinAcquireeShares
/ us-gaap_BusinessAcquisitionAxis
= arcp_ColeCreditPropertyTrustInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		        
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		        
Red Lobster Portfolio [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Purchase price                                 1,700,000,000us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		      
Number of purchase leasebacks                                 522arcp_NumberofPurchaseLeasebacks
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		      
Red Lobster Portfolio [Member] | Scenario, Plan [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)                                 500us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_RedLobsterPortfolioMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioPlanMember		      
Other Branded Restaurant Properties [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Number of purchase leasebacks                                 20arcp_NumberofPurchaseLeasebacks
/ us-gaap_BusinessAcquisitionAxis
= arcp_OtherBrandedRestaurantPropertiesMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		      
ARCT IV [Member] | ARCT IV [Member] | Member Units [Member] | Limited Partner [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         600,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
American Realty Capital Trust IV, Operating Partnership [Member] | ARCT IV [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         42,200,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
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		              
American Realty Capital Trust IV, Operating Partnership [Member] | ARCT IV [Member] | Member Units [Member] | Limited Partner [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in 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		              
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 22.50arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
Fair value of units issued                         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		              
American Realty Capital Trust IV, Operating Partnership [Member] | ARCT IV [Member] | Member Units [Member] | Preferred OP Units [Member] | Limited Partner [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVOperatingPartnershipMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
American Realty Capital Trust IV, American Realty Capital Trust IV, Operating Partnership, American Realty Capital Trust IV, Special Limited Partner, and American Realty Capital Trust IV Advisor [Member] | ARCT IV [Member] | Member Units [Member] | Class B Units [Member] | Limited Partner [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable, per share conversion rate (in dollars per share)                         $ 2.3961arcp_BusinessAcquisitionEquityInterestIssuedorIssuablePerShareConversionRate
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalTrustIVAmericanRealtyCapitalTrustIVOperatingPartnershipAmericanRealtyCapitalTrustIVSpecialLimitedPartnerandAmericanRealtyCapitalTrustIVAdvisorMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
American Realty Capital III Special Limited Partnership, LLC [Member] | ARCP Merger [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)           7,300,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalIiiSpecialLimitedPartnershipLlcMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                            
Units minimum holding period           1 year                            
American Realty Capital Advisors III LLC [Member] | ARCT IV [Member] | Member Units [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		              
American Realty Capital Real Estate Partners, LLC [Member] | ARCT IV [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Fair value of consideration given- cash                         $ 750,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalRealEstatePartnersLLCMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
American Realty Capital Real Estate Partners, LLC [Member] | ARCT IV [Member] | Member Units [Member] | Class B Units [Member] | Limited Partner [Member] | ARC Properties Operating Partnership, L.P. [Member]                                        
Business Acquisition [Line Items]                                        
Equity interest issued or issuable (in shares)                         100,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalRealEstatePartnersLLCMember
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
/ us-gaap_StatementClassOfStockAxis
= arcp_ClassBUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		              
American Realty Capital Centers, Inc. [Member]                                        
Business Acquisition [Line Items]                                        
Spinoff transaction, Noncontrolling interest (percent)                                   25.00%arcp_SpinoffTransactionNoncontrollingInterestOwnershipPercentagebyParent
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalCentersInc.Member		    
Common stock, par value (in dollars per share)                                       $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalCentersInc.Member
American Realty Capital Centers, Inc. [Member] | Common Stock [Member]                                        
Business Acquisition [Line Items]                                        
Spinoff transaction, per share distribution rate                                   10arcp_SpinoffTransactionPerShareDistributionRate
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalCentersInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		    
American Realty Capital Centers, Inc. [Member] | Member Units [Member]                                        
Business Acquisition [Line Items]                                        
Spinoff transaction, per share distribution rate                                   10arcp_SpinoffTransactionPerShareDistributionRate
/ us-gaap_CounterpartyNameAxis
= arcp_AmericanRealtyCapitalCentersInc.Member
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		    
Blackstone Real Estate Partners VII LP and DDR Corporation [Member]                                        
Business Acquisition [Line Items]                                        
Spinoff transaction, finalization of documentation period (in days)                                     30 days  
Property Subject to Operating Lease [Member] | GE Capital Portfolio [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)             409us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= us-gaap_PropertySubjectToOperatingLeaseMember		                          
Property Subject to Operating Lease [Member] | GE Capital Portfolio [Member] | ARCT IV [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies) 912us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= us-gaap_PropertySubjectToOperatingLeaseMember		                                      
Direct Financing Lease [Member] | GE Capital Portfolio [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies)             38us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= arcp_DirectFinancingLeaseMember		                          
Direct Financing Lease [Member] | GE Capital Portfolio [Member] | ARCT IV [Member]                                        
Business Acquisition [Line Items]                                        
Number of businesses acquired (in properties and companies) 12us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= arcp_GECapitalPortfolioMember
/ dei_LegalEntityAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= arcp_DirectFinancingLeaseMember		                                      
[1] Includes $2.2 million, $161.8 million and $211.4 million to affiliates for the years ended December 31, 2014, December 31, 2013, and December 31, 2012, respectively.