2.4.0.8040020 - Disclosure - Agreements and Transactions with Related Parties (Narratives) (Details)truefalseIn Millions, except Share data, unless otherwise specifiedfalse1false USDfalsefalse$FROM_Jan01_2013_TO_Jan31_2013http://www.sec.gov/CIK0001390213duration2013-01-01T00:00:002013-01-31T00:00:00PercentStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDpershareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false USDfalsefalse$FROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001390213duration2013-01-01T00:00:002013-06-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PercentStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDpershareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$FROM_Jan01_2012_TO_Jun30_2012http://www.sec.gov/CIK0001390213duration2012-01-01T00:00:002012-06-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_AssetManagementFeesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Asset Management Fees2false 5cpa17_NetAssetValuePerSharecpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse10.0010.00USD$falsetruefalse3falsefalsefalse00falsefalsefalsenum:perShareItemTypedecimalThe price per share on shares issued to the advisor for asset management fees.No definition available.false3Offering price on shares for asset management fees3false 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5cpa17_PercentageOfAvailableCashDistributionToAdvisorcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.10.1falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe maximum percentage of available cash generated from operations, excluding capital proceeds, as reduced by operating expenses and debt service, excluding prepayments and balloon payments, of the operating partnership that is paid to the advisor for service fees.No definition available.false0Percentage of Available cash distribution to advisor6true 4cpa17_PersonnelAndOfficeRentReimbursementAbstractcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Personnel And Office Rent Reimbursement [Abstract]7false 5cpa17_PercentageOfAverageInvestedAssetcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.020.02falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage guideline for when the advisor is required to reimburse the amount of operating expenses that exceeds percentage of average invested asset.No definition available.false0Percentage of average invested asset guideline8false 5cpa17_PercentageOfNetIncomecpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.250.25falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage guideline for when the advisor is required to reimburse the amount of operating expenses that exceeds percentage of net income.No definition available.false0Percentage of net income guideline9true 4cpa17_TransactionFeesAbstractcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Transaction Fees [Abstract]10false 5cpa17_PreferredReturncpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.050.05falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe advisor's preferred non-compounded cumulative distribution return per annum based on invested capital for structuring and negotiating investments.No definition available.false0Preferred return by advisor11false 5cpa17_AveragePercentageAcqFeesPayableToAdvisorcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.0450.045falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe average percentage of acquisition fees payable to the advisor with respect to long-term net lease investments.No definition available.false0Average percentage of acquisition fees payable12false 5cpa17_PercentageOfAcqFeesPayableCurrentPortioncpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.0250.025falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe current portion of the average percentage of acquisition fees payable to the advisor with respect to long-term net lease investments.No definition available.false0Average percentage of acquisition fees payable current13false 5cpa17_PercentageOfAcqFeesPayableDeferredPortioncpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.020.02falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe deferred portion of the average percentage of acquisition fees payable to the advisor with respect to long-term net lease investments.No definition available.false0Average percentage of acquisition fees payable deferred14false 5cpa17_PaymentOfDeferredAcquisitionFeesToAdvisorscpa17_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse96000009.6USD$falsetruefalse3truefalsefalse97000009.7USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe amount paid to the advisor for deferred acquisition fee installments.No definition available.false2Payment of deferred acquisition fees to advisors15false 5cpa17_SubordinatedDispositionFeesPercentagecpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.030.03falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage fee charged by the advisor to provide services in connection with a disposition.No definition available.false0Subordinated disposition fees percentage16true 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funds.No definition available.false3Selling commission per share sold19false 5cpa17_DealerRevenuePerShareSoldcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse0.350.35USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsenum:perShareItemTypedecimalThe per share dealer revenue earned in connection with raising funds.No definition available.false3Dealer revenue per share sold20false 5cpa17_UnderwritingCompensationLimitcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truetruefalse0.10.1falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe limit on underwriting compensation prescribed by Financial Industry Regulatory Authority, Inc.No definition available.false0Underwriting compensation percentage limit21false 5cpa17_OfferingProceedsReimbursedForDueDiligenceExpensesPercentagecpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truetruefalse0.0050.005falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage of offering proceeds that the company is obligated to reimburse to the advisor for bon fide due diligence expenses.No definition available.false0Due diligence expense reimbursement percentage22false 5cpa17_PercentageOverageAdvisorPaysForOrgAndOfferingExpcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truetruefalse0.040.04falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage overage of gross offering proceeds for the advisor agrees to be responsible for the payment of organization and offering proceeds.No definition available.false0Percentage overage advisor pay O&O23false 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leasescpa17_AssetManagementFeesAxisxbrldihttp://xbrl.org/2006/xbrldicpa17_AverageMarketValueMembercpa17_AssetManagementFeesAxisexplicitMemberPercentStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Average market value for long-term net leases25true 4us-gaap_AssetManagementFeesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Asset Management Fees26false 5cpa17_PercentageOfRealEstateAssetsManagementFeePaidToAdvisorcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.0050.005falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage fee paid to the advisor for asset management.No definition available.false0Percentage of asset management fees27false 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securitiescpa17_AssetManagementFeesAxisxbrldihttp://xbrl.org/2006/xbrldicpa17_AverageEquityValueMembercpa17_AssetManagementFeesAxisexplicitMemberPercentStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Minimum | Average equity value of certain securities41true 4us-gaap_AssetManagementFeesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Asset Management Fees42false 5cpa17_PercentageOfRealEstateAssetsManagementFeePaidToAdvisorcpa17_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2truetruefalse0.0150.015falsefalsefalse3falsefalsefalse00falsefalsefalsenum:percentItemTypepureThe percentage fee paid to the advisor for asset management.No definition available.false0Percentage of asset management feesfalseAgreements and Transactions with Related Parties (Narratives) (Details) (USD 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