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Preferred and Common Stock and OP Units (Details) (USD $)
 0 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended
Oct. 23, 2013
May 28, 2013
Mar. 17, 2013
Nov. 29, 2012
Jun. 27, 2012
Mar. 16, 2012
Feb. 27, 2012
Sep. 07, 2011
Sep. 30, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
May 28, 2014
Nov. 12, 2013
Jan. 03, 2014
Feb. 28, 2013
Sep. 02, 2014
Jan. 29, 2013
Jun. 18, 2012
Nov. 02, 2011
Jul. 09, 2012
Nov. 07, 2011
Jun. 07, 2013
Dec. 09, 2013
Aug. 20, 2013
Aug. 01, 2012
Jan. 31, 2013
Nov. 08, 2013
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                   0us-gaap_TemporaryEquitySharesIssued 21,735,008us-gaap_TemporaryEquitySharesIssued                                    
Proceeds from issuances of common stock, net offering costs                   $ 1,595,045,000us-gaap_ProceedsFromIssuanceOfCommonStock $ 1,993,159,000us-gaap_ProceedsFromIssuanceOfCommonStock $ 1,691,412,000us-gaap_ProceedsFromIssuanceOfCommonStock                                  
Common stock, shares issued                   905,530,430us-gaap_CommonStockSharesIssued 239,234,725us-gaap_CommonStockSharesIssued                                    
Payments for redemption of temporary equity                   316,126,000arcp_PaymentsforRedemptionofTemporaryEquity 0arcp_PaymentsforRedemptionofTemporaryEquity 0arcp_PaymentsforRedemptionofTemporaryEquity                                  
Preferred stock, fair value                   0us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests 269,299,000us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests                                    
Temporary equity, shares authorized                   0us-gaap_TemporaryEquitySharesAuthorized 21,735,008us-gaap_TemporaryEquitySharesAuthorized                                    
Preferred stock, shares issued                   42,834,138us-gaap_PreferredStockSharesIssued 42,199,547us-gaap_PreferredStockSharesIssued                                    
Common stock, shares authorized                                                 1,500,000,000arcp_CommonStockSharesRegistered        
Maximum amount of offering from universal shelf registration statement                                                     500,000,000arcp_CommonStockAmountRegistered    
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, Dividends, Per Share, Declared $ 1.000us-gaap_CommonStockDividendsPerShareDeclared $ 0.940us-gaap_CommonStockDividendsPerShareDeclared $ 0.910us-gaap_CommonStockDividendsPerShareDeclared $ 0.900us-gaap_CommonStockDividendsPerShareDeclared $ 0.890us-gaap_CommonStockDividendsPerShareDeclared $ 0.885us-gaap_CommonStockDividendsPerShareDeclared $ 0.880us-gaap_CommonStockDividendsPerShareDeclared $ 0.875us-gaap_CommonStockDividendsPerShareDeclared $ 0.895us-gaap_CommonStockDividendsPerShareDeclared                                        
Stock repurchase program, authorized amount                                                   250,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1      
Common stock repurchases (shares)                   551,664us-gaap_StockRepurchasedDuringPeriodShares                                      
ARCP [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                   1,590,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_ArcpMember		 676,600,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_ArcpMember		 34,900,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_ArcpMember		 84,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_ArcpMember		                                
Resale Registration [Member]                                                          
Class of Stock [Line Items]                                                          
Common stock, shares authorized                   1,882,248arcp_CommonStockSharesRegistered
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_ResaleRegistrationMember		                                      
At The Market [Member]                                                          
Class of Stock [Line Items]                                                          
Maximum amount of offering from universal shelf registration statement                                                       60,000,000arcp_CommonStockAmountRegistered
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_AtTheMarketMember		  
Public Offering [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                   1,590,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_PublicOfferingMember		       1,590,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_PublicOfferingMember		                              
Shares issued (in shares)                           138,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_PublicOfferingMember		                              
ARCT III [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                       1,600,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIIIMember		 102,200,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIIIMember		                                
Common stock, shares issued                       155,700,000us-gaap_CommonStockSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIIIMember		 9,800,000us-gaap_CommonStockSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIIIMember		                                
ARCT IV/ ARCP Merger [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                       255,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIVARCPMergerMember		                                  
Common stock, shares issued                       5,400,000us-gaap_CommonStockSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_ARCTIVARCPMergerMember		                                  
ARCT IV [Member]                                                          
Class of Stock [Line Items]                                                          
Common stock, shares issued                     31,000,000us-gaap_CommonStockSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member		                                    
ARC Properties Operating Partnership, L.P. [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                   0us-gaap_TemporaryEquitySharesIssued
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 21,735,008us-gaap_TemporaryEquitySharesIssued
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		                                    
Proceeds from issuances of common stock, net offering costs                   1,595,045,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 1,993,159,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 1,691,412,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		                                  
Payments for redemption of temporary equity                   316,126,000arcp_PaymentsforRedemptionofTemporaryEquity
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 0arcp_PaymentsforRedemptionofTemporaryEquity
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 0arcp_PaymentsforRedemptionofTemporaryEquity
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		                                  
Preferred stock, fair value                   0us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		 269,299,000us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember		                                    
ARC Properties Operating Partnership, L.P. [Member] | General Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Issuance of Common OP units, net, units                           138,000,000us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 15,100,000us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		                            
ARC Properties Operating Partnership, L.P. [Member] | Universal Shelf Registration [Member] | General Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Issuance of Common OP units, net, units                   2,100,000us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_UniversalShelfRegistrationMember		                                      
Common Stock [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                             15,100,000us-gaap_TemporaryEquitySharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                            
Proceeds from issuances of common stock, net offering costs                             186,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                            
Conversion of OP units to series F preferred stock, shares                   1,108,351us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 829,629us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                                    
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 repurchases (shares)                     28,319,972us-gaap_StockRepurchasedDuringPeriodShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 183,119us-gaap_StockRepurchasedDuringPeriodShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                                  
Common Stock [Member] | Universal Shelf Registration [Member]                                                          
Class of Stock [Line Items]                                                          
Shares issued (in shares)                   2,100,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_UniversalShelfRegistrationMember		                                      
Common Stock [Member] | Public Offering [Member]                                                          
Class of Stock [Line Items]                                                          
Share price (in dollars per share)                           $ 12.00us-gaap_SharePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_PublicOfferingMember		                              
Shares issued (in shares)                           138,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= arcp_PublicOfferingMember		                              
Common Stock [Member] | ARCT IV [Member]                                                          
Class of Stock [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		                          
Member Units [Member] | ARCT IV [Member] | American Realty Capital Trust IV, Operating Partnership [Member]                                                          
Class of Stock [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		                          
Member Units [Member] | ARCT IV [Member] | American Realty Capital Trust IV, Operating Partnership [Member] | Limited Partner [Member]                                                          
Class of Stock [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		                          
Member Units [Member] | ARCP Merger [Member]                                                          
Class of Stock [Line Items]                                                          
Equity interest issued or issuable (in shares)                                 140,700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIIIMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                        
Member Units [Member] | ARC Properties Operating Partnership, L.P. [Member]                                                          
Class of Stock [Line Items]                                                          
Preferred stock, shares issued                   86,874,000us-gaap_PreferredStockSharesIssued
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                                      
Series D Preferred Stock [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                             21,700,000us-gaap_TemporaryEquitySharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                            
Proceeds from issuances of preferred shares                             288,000,000us-gaap_TemporaryEquityStockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                            
Payments for redemption of temporary equity                                   316,100,000arcp_PaymentsforRedemptionofTemporaryEquity
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                      
Preferred stock, fair value                             269,300,000us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                            
Embedded derivative, fair value of embedded derivative, net                     16,700,000us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                   18,700,000us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Temporary equity, shares authorized                   0us-gaap_TemporaryEquitySharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Series D Preferred Stock [Member] | Gain (Loss) on Derivative Instruments, Net, Pretax [Member]                                                          
Class of Stock [Line Items]                                                          
Gain (loss) on derivative instruments, net                   13,600,000us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet
/ us-gaap_IncomeStatementLocationAxis
= arcp_GainLossonDerivativeInstrumentsNetPretaxMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Series D Preferred Stock [Member] | ARC Properties Operating Partnership, L.P. [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                             21,700,000us-gaap_TemporaryEquitySharesIssued
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                            
Preferred stock, dividend rate, percentage                   5.81%us-gaap_PreferredStockDividendRatePercentage
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Share price (in dollars per share)                   $ 13.59us-gaap_SharePrice
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Temporary equity, dividend rate, per-dollar amount (in dollars per share)                   $ 0.79arcp_TemporaryEquityDividendRatePerDollarAmount
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Series D Preferred Stock [Member] | ARC Properties Operating Partnership, L.P. [Member] | General Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                   600,000us-gaap_TemporaryEquitySharesIssued
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember		                                      
Series E Preferred Stock [Member]                                                          
Class of Stock [Line Items]                                                          
Temporary equity, shares authorized                   0us-gaap_TemporaryEquitySharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember		                                      
Member Units [Member] | Common Stock [Member]                                                          
Class of Stock [Line Items]                                                          
Conversion of OP units to series F preferred stock, shares                     599,233us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits
/ us-gaap_StatementClassOfStockAxis
= us-gaap_MemberUnitsMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		                                    
Preferred OP Units [Member]                                                          
Class of Stock [Line Items]                                                          
Preferred stock, shares issued                   42,834,138us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember		                                      
Preferred OP Units [Member] | General Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Conversion of OP units to series F preferred stock, shares                   600,000us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember		                                      
Preferred OP Units [Member] | Member Units [Member] | ARCT IV [Member]                                                          
Class of Stock [Line Items]                                                          
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		                          
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, liquidation preference per share (in dollars per share)                   $ 25.00us-gaap_PreferredStockLiquidationPreference
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                                      
Preferred stock, dividend rate, per-dollar-amount (in dollars per share)                   $ 1.675us-gaap_PreferredStockDividendRatePerDollarAmount
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                                      
Preferred OP Units [Member] | Member Units [Member] | ARC Properties Operating Partnership, L.P. [Member] | ARCT IV [Member] | General Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                               42,200,000us-gaap_TemporaryEquitySharesIssued
/ us-gaap_BusinessAcquisitionAxis
= arcp_AmericanRealtyCapitalTrustIVInc.Member
/ dei_LegalEntityAxis
= arcp_ArcPropertiesOperatingPartnershipLPMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_MemberUnitsMember		                          
Preferred OP Units [Member] | Member Units [Member] | ARC Properties Operating Partnership, L.P. [Member] | ARCT IV [Member] | American Realty Capital Trust IV, Operating Partnership [Member] | Limited Partner [Member]                                                          
Class of Stock [Line Items]                                                          
Series D preferred stock, $0.01 par value, zero and 21,735,008 shares (part of 100,000,000 aggregate preferred shares authorized) issued and outstanding at December 31, 2014 and 2013, respectively                               700,000us-gaap_TemporaryEquitySharesIssued
/ 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		                          
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		                          
IPO [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs               67,400,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_IPOMember		                                          
Shares issued (in shares)               5,574,131us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_IPOMember		                                          
Follow on Offering [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                                     26,700,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		 30,300,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		 15,800,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		                
Shares issued (in shares)                                     2,070,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		 3,250,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		 1,497,924us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_FollowOnOfferingMember		                
Underwriters Over Allotment [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                                           4,600,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_UnderwritersOverAllotmentMember		 800,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_UnderwritersOverAllotmentMember		            
Shares issued (in shares)                                           487,500us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_UnderwritersOverAllotmentMember		 74,979us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_UnderwritersOverAllotmentMember		            
At the Market Offering [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                     8,900,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_AtMarketOfferingMember		                                    
Shares issued (in shares)                     553,300us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= arcp_AtMarketOfferingMember		                                    
Private Placement [Member]                                                          
Class of Stock [Line Items]                                                          
Proceeds from issuances of common stock, net offering costs                             186,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_PrivatePlacementMember		                 $ 455,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_PrivatePlacementMember		          
Shares issued (in shares)                             15,126,498us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_PrivatePlacementMember		                 29,411,764us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ arcp_TypeOfCommonStockOfferingAxis
= us-gaap_PrivatePlacementMember		          
[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.