<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Version>2.4.0.8</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>381</ContextCount>
  <ElementCount>404</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>148</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001501 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1002000 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1003000 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ConsolidatedStatementOfChangesInEquity</Role>
      <ShortName>CONSOLIDATED STATEMENT OF CHANGES IN EQUITY</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/Organization</Role>
      <ShortName>Organization</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2103100 - Disclosure - Real Estate Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestments</Role>
      <ShortName>Real Estate Investments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2104100 - Disclosure - Investments in Unconsolidated Joint Ventures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentsInUnconsolidatedJointVentures</Role>
      <ShortName>Investments in Unconsolidated Joint Ventures</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2105100 - Disclosure - Preferred Equity Investment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/PreferredEquityInvestment</Role>
      <ShortName>Preferred Equity Investment</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2106100 - Disclosure - Investment Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentSecurities</Role>
      <ShortName>Investment Securities</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - Credit Facility</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CreditFacility</Role>
      <ShortName>Credit Facility</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2109100 - Disclosure - Mortgage Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://americanrealtycap.com/role/MortgageNotesPayable</Role>
      <ShortName>Mortgage Notes Payable</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/FairValueOfFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2111100 - Disclosure - Derivatives and Hedging Activities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivities</Role>
      <ShortName>Derivatives and Hedging Activities</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2112100 - Disclosure - Common Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommonStock</Role>
      <ShortName>Common Stock</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2114100 - Disclosure - Related Party Transactions and Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RelatedPartyTransactionsAndArrangements</Role>
      <ShortName>Related Party Transactions and Arrangements</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2115100 - Disclosure - Economic Dependency</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/EconomicDependency</Role>
      <ShortName>Economic Dependency</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2116100 - Disclosure - Share-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ShareBasedCompensation</Role>
      <ShortName>Share-Based Compensation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2117100 - Disclosure - Net Loss Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NetLossPerShare</Role>
      <ShortName>Net Loss Per Share</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2118100 - Disclosure - Non-controlling Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NonControllingInterests</Role>
      <ShortName>Non-controlling Interests</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2119100 - Disclosure - Quarterly Results (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/QuarterlyResultsUnaudited</Role>
      <ShortName>Quarterly Results (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2120100 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2121100 - Schedule - Schedule III Real Estate and Accumulated Depreciation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation</Role>
      <ShortName>Schedule III Real Estate and Accumulated Depreciation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2303301 - Disclosure - Real Estate Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestmentsTables</Role>
      <ShortName>Real Estate Investments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2304301 - Disclosure - Investments in Unconsolidated Joint Ventures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentsInUnconsolidatedJointVenturesTables</Role>
      <ShortName>Investments in Unconsolidated Joint Ventures (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2306301 - Disclosure - Investment Securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentSecuritiesTables</Role>
      <ShortName>Investment Securities (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2309301 - Disclosure - Mortgage Notes Payable (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://americanrealtycap.com/role/MortgageNotesPayableTables</Role>
      <ShortName>Mortgage Notes Payable (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2310301 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/FairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2311301 - Disclosure - Derivatives and Hedging Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivitiesTables</Role>
      <ShortName>Derivatives and Hedging Activities (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2313301 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommitmentsAndContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2314301 - Disclosure - Related Party Transactions and Arrangements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RelatedPartyTransactionsAndArrangementsTables</Role>
      <ShortName>Related Party Transactions and Arrangements (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2316301 - Disclosure - Share-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ShareBasedCompensationTables</Role>
      <ShortName>Share-Based Compensation (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2317301 - Disclosure - Net Loss Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NetLossPerShareTables</Role>
      <ShortName>Net Loss Per Share (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2319301 - Disclosure - Quarterly Results (Unaudited) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/QuarterlyResultsUnauditedTables</Role>
      <ShortName>Quarterly Results (Unaudited) (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2401401 - Disclosure - Organization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/OrganizationDetails</Role>
      <ShortName>Organization (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2402403 - Disclosure - Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2402404 - Disclosure - Summary of Significant Accounting Policies Schedule of Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfIntangibleAssetsDetails</Role>
      <ShortName>Summary of Significant Accounting Policies Schedule of Intangible Assets (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2402405 - Disclosure - Summary of Significant Accounting Policies Schedule of Shares Repurchased (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfSharesRepurchasedDetails</Role>
      <ShortName>Summary of Significant Accounting Policies Schedule of Shares Repurchased (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2403402 - Disclosure - Real Estate Investments (Assets and Liabilities Assumed) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestmentsAssetsAndLiabilitiesAssumedDetails</Role>
      <ShortName>Real Estate Investments (Assets and Liabilities Assumed) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2403404 - Disclosure - Real Estate Investments (Proforma Revenue and Losses, Disclosure) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestmentsProformaRevenueAndLossesDisclosureDetails</Role>
      <ShortName>Real Estate Investments (Proforma Revenue and Losses, Disclosure) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2403405 - Disclosure - Real Estate Investments (Schedule of Future Minimum Rental Payments for Operating Lease) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestmentsScheduleOfFutureMinimumRentalPaymentsForOperatingLeaseDetails</Role>
      <ShortName>Real Estate Investments (Schedule of Future Minimum Rental Payments for Operating Lease) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2403406 - Disclosure - Real Estate Investments (Schedule of Annualized Rental Income by Major Tenant) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RealEstateInvestmentsScheduleOfAnnualizedRentalIncomeByMajorTenantDetails</Role>
      <ShortName>Real Estate Investments (Schedule of Annualized Rental Income by Major Tenant) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2404402 - Disclosure - Investments in Unconsolidated Joint Ventures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentsInUnconsolidatedJointVenturesDetails</Role>
      <ShortName>Investments in Unconsolidated Joint Ventures (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2405402 - Disclosure - Preferred Equity Investment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/PreferredEquityInvestmentDetails</Role>
      <ShortName>Preferred Equity Investment (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2406402 - Disclosure - Investment Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/InvestmentSecuritiesDetails</Role>
      <ShortName>Investment Securities (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2407401 - Disclosure - Credit Facility (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CreditFacilityDetails</Role>
      <ShortName>Credit Facility (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2409402 - Disclosure - Mortgage Notes Payable (Schedule of Mortgage Notes Payable) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://americanrealtycap.com/role/MortgageNotesPayableScheduleOfMortgageNotesPayableDetails</Role>
      <ShortName>Mortgage Notes Payable (Schedule of Mortgage Notes Payable) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2409403 - Disclosure - Mortgage Notes Payable (Schedule Of Aggregate Future Principal Payments On Mortgage Notes Payable) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://americanrealtycap.com/role/MortgageNotesPayableScheduleOfAggregateFuturePrincipalPaymentsOnMortgageNotesPayableDetails</Role>
      <ShortName>Mortgage Notes Payable (Schedule Of Aggregate Future Principal Payments On Mortgage Notes Payable) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2410402 - Disclosure - Fair Value of Financial Instruments (Schedule of Fair Value, Liabilities Measured on Recurring Basis) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/FairValueOfFinancialInstrumentsScheduleOfFairValueLiabilitiesMeasuredOnRecurringBasisDetails</Role>
      <ShortName>Fair Value of Financial Instruments (Schedule of Fair Value, Liabilities Measured on Recurring Basis) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2410403 - Disclosure - Fair Value of Financial Instruments (Fair Value, by Balance Sheet Grouping) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/FairValueOfFinancialInstrumentsFairValueByBalanceSheetGroupingDetails</Role>
      <ShortName>Fair Value of Financial Instruments (Fair Value, by Balance Sheet Grouping) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2411402 - Disclosure - Derivatives and Hedging Activities (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivitiesNarrativeDetails</Role>
      <ShortName>Derivatives and Hedging Activities (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2411403 - Disclosure - Derivatives and Hedging Activities (Schedule Of Interest Rate Derivative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivitiesScheduleOfInterestRateDerivativeDetails</Role>
      <ShortName>Derivatives and Hedging Activities (Schedule Of Interest Rate Derivative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2411404 - Disclosure - Derivatives and Hedging Activities (Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivitiesScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceDetails</Role>
      <ShortName>Derivatives and Hedging Activities (Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2411405 - Disclosure - Derivatives and Hedging Activities (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/DerivativesAndHedgingActivitiesScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueDetails</Role>
      <ShortName>Derivatives and Hedging Activities (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2412401 - Disclosure - Common Stock (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommonStockDetails</Role>
      <ShortName>Common Stock (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2413402 - Disclosure - Commitments and Contingencies Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommitmentsAndContingenciesCommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and Contingencies Commitments and Contingencies (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2413403 - Disclosure - Commitments and Contingencies Scheudle of Future Minimum Rental Payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/CommitmentsAndContingenciesScheudleOfFutureMinimumRentalPaymentsDetails</Role>
      <ShortName>Commitments and Contingencies Scheudle of Future Minimum Rental Payments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2414402 - Disclosure - Related Party Transactions and Arrangements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RelatedPartyTransactionsAndArrangementsDetails</Role>
      <ShortName>Related Party Transactions and Arrangements (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2414403 - Disclosure - Related Party Transactions and Arrangements (Schedule of Amount Contractually Due and Forgiven in Connection With Operation Related Services) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/RelatedPartyTransactionsAndArrangementsScheduleOfAmountContractuallyDueAndForgivenInConnectionWithOperationRelatedServicesDetails</Role>
      <ShortName>Related Party Transactions and Arrangements (Schedule of Amount Contractually Due and Forgiven in Connection With Operation Related Services) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>2416402 - Disclosure - Share-Based Compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ShareBasedCompensationDetails</Role>
      <ShortName>Share-Based Compensation (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>2416403 - Disclosure - Share-Based Compensation Restricted Stock Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ShareBasedCompensationRestrictedStockActivityDetails</Role>
      <ShortName>Share-Based Compensation Restricted Stock Activity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>2417402 - Disclosure - Net Loss Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NetLossPerShareScheduleOfEarningsPerShareBasicAndDilutedDetails</Role>
      <ShortName>Net Loss Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>2417403 - Disclosure - Net Loss Per Share (Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NetLossPerShareScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDetails</Role>
      <ShortName>Net Loss Per Share (Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>2418401 - Disclosure - Non-controlling Interests (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/NonControllingInterestsDetails</Role>
      <ShortName>Non-controlling Interests (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>2419402 - Disclosure - Quarterly Results (Unaudited) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/QuarterlyResultsUnauditedDetails</Role>
      <ShortName>Quarterly Results (Unaudited) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>2421401 - Schedule - Schedule III Real Estate and Accumulated Depreciation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://americanrealtycap.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciationDetails</Role>
      <ShortName>Schedule III Real Estate and Accumulated Depreciation (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Element arct_RelatedPartyTransactionAcquisitionFeesEarnedByRelatedPartyPercentageOfBenchmark had a mix of decimals attribute values: 0 3.</Log>
    <Log type="Info">Element arct_RepurchasePriceShareRepurchaseProgramPercentageOfValueOfCapitalPaid had a mix of decimals attribute values: 2 3.</Log>
    <Log type="Info">Element arct_StockAvailableForIssuanceSharesDividendReinvestmentPlan had a mix of decimals attribute values: -5 -4.</Log>
    <Log type="Info">Element us-gaap_AllocatedShareBasedCompensationExpense had a mix of decimals attribute values: -5 0.</Log>
    <Log type="Info">'Shares' elements on report '2401401 - Disclosure - Organization (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2401401 - Disclosure - Organization (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2402403 - Disclosure - Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2403404 - Disclosure - Real Estate Investments (Proforma Revenue and Losses, Disclosure) (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2404402 - Disclosure - Investments in Unconsolidated Joint Ventures (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2405402 - Disclosure - Preferred Equity Investment (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2413402 - Disclosure - Commitments and Contingencies Commitments and Contingencies (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2414402 - Disclosure - Related Party Transactions and Arrangements (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2414403 - Disclosure - Related Party Transactions and Arrangements (Schedule of Amount Contractually Due and Forgiven in Connection With Operation Related Services) (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Shares' elements on report '2416402 - Disclosure - Share-Based Compensation (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2418401 - Disclosure - Non-controlling Interests (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2421401 - Schedule - Schedule III Real Estate and Accumulated Depreciation (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 1001000 - Statement - CONSOLIDATED BALANCE SHEETS</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Dec. 31, 2010'</Log>
    <Log type="Info">Process Flow-Through: 1001501 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1002000 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Dec. 31, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Sep. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Jun. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '3 Months Ended
Mar. 31, 2011'</Log>
    <Log type="Info">Process Flow-Through: 1004000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</Log>
  </Logs>
  <InputFiles>
    <File>arct-20131231.xml</File>
    <File>arct-20131231.xsd</File>
    <File>arct-20131231_cal.xml</File>
    <File>arct-20131231_def.xml</File>
    <File>arct-20131231_lab.xml</File>
    <File>arct-20131231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
