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Equity Investments in Real Estate (Narratives) (Details) (USD $)
12 Months Ended 3 Months Ended 25 Months Ended 1 Months Ended 26 Months Ended 1 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2014
Dec. 31, 2014
Nov. 30, 2012
Dec. 31, 2014
Oct. 31, 2013
Apr. 07, 2014
Sep. 30, 2014
Nov. 19, 2014
Feb. 02, 2015
Dec. 31, 2012
Aug. 20, 2013
Feb. 25, 2014
Dec. 18, 2013
Oct. 31, 2014
May 21, 2014
Mar. 31, 2014
Dec. 31, 2007
Dec. 31, 2010
Nov. 30, 2010
Footnote Details                                            
Capital contributions to equity investments $ 199,470,000us-gaap_PaymentsToAcquireEquityMethodInvestments $ 156,228,000us-gaap_PaymentsToAcquireEquityMethodInvestments $ 73,656,000us-gaap_PaymentsToAcquireEquityMethodInvestments                                      
Income from equity investments in real estate 24,073,000us-gaap_IncomeLossFromEquityMethodInvestments (9,500,000)us-gaap_IncomeLossFromEquityMethodInvestments 9,757,000us-gaap_IncomeLossFromEquityMethodInvestments                                      
Non-recourse mortgage loans 67,900,000us-gaap_NonRecourseDebt 296,600,000us-gaap_NonRecourseDebt     67,900,000us-gaap_NonRecourseDebt   67,900,000us-gaap_NonRecourseDebt                              
Interest capitalized 4,852,000us-gaap_InterestPaidCapitalized 2,481,000us-gaap_InterestPaidCapitalized 1,719,000us-gaap_InterestPaidCapitalized                                      
Impairment charges 570,000us-gaap_OtherAssetImpairmentCharges 0us-gaap_OtherAssetImpairmentCharges 2,019,000us-gaap_OtherAssetImpairmentCharges                                      
Proceeds from equity method investments 83,882,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital 9,050,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital 22,887,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital                                      
Unamortized basis differences on our equity investments 31,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity 25,900,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity     31,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity   31,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity                              
Amortization of the basis difference 4,300,000cpa17_EquityMethodInvestmentDifferenceBetweenCarryingAmountandUnderlyingEquityAmortization 3,900,000cpa17_EquityMethodInvestmentDifferenceBetweenCarryingAmountandUnderlyingEquityAmortization 3,300,000cpa17_EquityMethodInvestmentDifferenceBetweenCarryingAmountandUnderlyingEquityAmortization                                      
Acquisition costs, expensed 5,169,000us-gaap_BusinessCombinationAcquisitionRelatedCosts 16,884,000us-gaap_BusinessCombinationAcquisitionRelatedCosts 14,834,000us-gaap_BusinessCombinationAcquisitionRelatedCosts                                      
Acquisition-related cost and fees, capitalized 6,489,000cpa17_TransactionFeesIncurred 7,840,000cpa17_TransactionFeesIncurred 31,610,000cpa17_TransactionFeesIncurred                                      
Deferred tax liability 12,234,000us-gaap_DeferredTaxLiabilities 4,582,000us-gaap_DeferredTaxLiabilities     12,234,000us-gaap_DeferredTaxLiabilities   12,234,000us-gaap_DeferredTaxLiabilities                              
Equity investment 531,000,000us-gaap_EquityMethodInvestments 415,851,000us-gaap_EquityMethodInvestments     531,000,000us-gaap_EquityMethodInvestments   531,000,000us-gaap_EquityMethodInvestments                              
Payments for construction in process 68,901,000us-gaap_PaymentsForConstructionInProcess 91,402,000us-gaap_PaymentsForConstructionInProcess 39,428,000us-gaap_PaymentsForConstructionInProcess                                      
Total assets, equity investment 1,850,404,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets 1,706,407,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets     1,850,404,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets   1,850,404,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets                              
Total liabilities, equity investment 959,254,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities 868,586,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities     959,254,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities   959,254,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities                              
Total equity, equity investment 891,150,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital 837,821,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital     891,150,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital   891,150,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital                              
Revenue, equity investment 160,174,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue 132,760,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue 111,151,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue                                      
Income from continuing operations, equity investment 29,177,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems (2,579,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems 30,914,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems                                      
Minimum                                            
Footnote Details                                            
Ownership interest, percentage 7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
      7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
  7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
                             
Maximum                                            
Footnote Details                                            
Ownership interest, percentage 85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
      85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
  85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
                             
C1000 Logistiek Vastgooed B.V                                            
Footnote Details                                            
Carrying amount of mortgage 82,700,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
95,600,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
    82,700,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
  82,700,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
                             
Share of the non-recourse debt 70,300,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
81,300,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
    70,300,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
  70,300,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
                             
Shelborne Property Associates, LLC                                            
Footnote Details                                            
Capital contributions to equity investments 18,000,000us-gaap_PaymentsToAcquireEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                                         
Income from equity investments in real estate       6,500,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                                   
Unfunded commitments 3,600,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
      3,600,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
  3,600,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                             
Payments for construction in process         151,300,000us-gaap_PaymentsForConstructionInProcess
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                                 
Loan amount   154,900,000us-gaap_ConstructionLoan
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
125,000,000us-gaap_ConstructionLoan
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                  125,000,000us-gaap_ConstructionLoan
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                 
IDL Wheel Tenant, LLC                                            
Footnote Details                                            
Capital contributions to equity investments 22,900,000us-gaap_PaymentsToAcquireEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
          30,700,000us-gaap_PaymentsToAcquireEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                             
Interest capitalized 1,100,000us-gaap_InterestPaidCapitalized
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                                         
Unfunded commitments 19,300,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
      19,300,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
  19,300,000cpa17_UnfundedCommitment
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                             
Foreign currency exchange rate           1.278cpa17_ForeignCurrencyExchangeRate
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                               
Interest rate on mortgage loan           9.00%us-gaap_MortgageLoansOnRealEstateInterestRate
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                               
Loan amount           50,000,000us-gaap_ConstructionLoan
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
                               
Debt instrument maturity date           Nov. 30, 2017                                
Hellweg 2                                            
Footnote Details                                            
Increase (decrease) in ownership interest in equity investments               5.00%cpa17_IncreaseDecreaseInOwnershipInterestInEquityInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
                           
Real estate transfer tax               8,100,000cpa17_RealEstateTransferTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
                           
BG LLH, LLC                                            
Footnote Details                                            
Income from equity investments in real estate 11,500,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                                         
Acquisition-related cost and fees, capitalized                 400,000cpa17_TransactionFeesIncurred
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                         
Investment purchase price                 20,400,000cpa17_InvestmentPurchasePrice
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                         
Transfer of assets noncash 8,300,000cpa17_TransferOfAssetsNoncash
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                                         
Total assets, equity investment   645,700,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
              2,200,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                       
Total liabilities, equity investment   468,700,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
              1,700,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                       
Total equity, equity investment   177,000,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
              481,600,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                       
Revenue, equity investment   335,500,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
214,500,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
            435,100,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                       
Income from continuing operations, equity investment   12,500,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
21,900,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
            148,500,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
                       
BPS Nevada, LLC (preferred equity investment)                                            
Footnote Details                                            
Income from equity investments in real estate 200,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
                                         
Ownership interest, percentage                     15.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
                     
Acquisition costs, expensed                     200,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
                     
Equity investment                     18,200,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
                     
BPS Nevada, LLC (preferred equity investment) | Subsequent Event                                            
Footnote Details                                            
Acquisition costs, expensed                       100,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
                   
Additional funding of equity method investments                       9,100,000cpa17_IncreaseDecreaseInEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BPSNevadaLLCPreferredEquityMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
                   
Initial Term | Shelborne Property Associates, LLC | Minimum                                            
Footnote Details                                            
Interest rate on mortgage loan                         6.00%us-gaap_MortgageLoansOnRealEstateInterestRate
/ cpa17_MortgageLoanTermAxis
= cpa17_InitialTermMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                 
Initial Term | Shelborne Property Associates, LLC | Maximum                                            
Footnote Details                                            
Interest rate on mortgage loan                         8.00%us-gaap_MortgageLoansOnRealEstateInterestRate
/ cpa17_MortgageLoanTermAxis
= cpa17_InitialTermMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                 
Extensions | Shelborne Property Associates, LLC | Minimum                                            
Footnote Details                                            
Interest rate on mortgage loan                         10.00%us-gaap_MortgageLoansOnRealEstateInterestRate
/ cpa17_MortgageLoanTermAxis
= cpa17_ExtensionsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
                 
Propco                                            
Footnote Details                                            
Ownership interest, percentage                                       75.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ cpa17_ThirdPartyAxis
= cpa17_PropcoMember
   
Propco | Hellweg 2                                            
Footnote Details                                            
Ownership interest, percentage                                       25.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
/ cpa17_ThirdPartyAxis
= cpa17_PropcoMember
95.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
/ cpa17_ThirdPartyAxis
= cpa17_PropcoMember
70.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
/ cpa17_ThirdPartyAxis
= cpa17_PropcoMember
Real estate transfer tax               21,900,000cpa17_RealEstateTransferTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
/ cpa17_ThirdPartyAxis
= cpa17_PropcoMember
                           
Third Party | Shelborne Property Associates, LLC                                            
Footnote Details                                            
Ownership interest, percentage 33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
      33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Equity investment 152,801,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
129,575,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
    152,801,000us-gaap_EquityMethodInvestments
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= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  152,801,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_ShelborneMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Third Party | IDL Wheel Tenant, LLC                                            
Footnote Details                                            
Equity investment 30,049,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
6,017,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
    30,049,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  30,049,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_IdriveLiveMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Third Party | BG LLH, LLC                                            
Footnote Details                                            
Ownership interest, percentage 7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
      7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Equity investment 42,587,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
2,410,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
    42,587,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  42,587,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BGLLHLLCMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Third Party | BPS Partners, LLC                                            
Footnote Details                                            
Ownership interest, percentage 15.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
      15.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  15.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Equity investment 40,032,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
23,278,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
    40,032,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  40,032,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BpsPartnersMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Third Party | Madison and Varitas Self Storage                                            
Footnote Details                                            
Ownership interest, percentage 45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
      45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Indirect ownership interest in equity investments 40.00%cpa17_IndirectOwnershipInterestInEquityInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
      40.00%cpa17_IndirectOwnershipInterestInEquityInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  40.00%cpa17_IndirectOwnershipInterestInEquityInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
Equity investment 20,147,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
23,907,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
    20,147,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
  20,147,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_MadisonAndVaritasSelfStorageMember
/ cpa17_ThirdPartyAxis
= cpa17_ThirdPartyMember
                             
WPC                                            
Footnote Details                                            
Ownership interest, percentage 63.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
      63.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
  63.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
                             
WPC | C1000 Logistiek Vastgooed B.V                                            
Footnote Details                                            
Ownership interest, percentage 85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
      85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
  85.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
                             
Equity investment 71,130,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
84,596,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
    71,130,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
  71,130,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_C1000BvMember
                             
WPC | Hellweg 2                                            
Footnote Details                                            
Ownership interest, percentage 37.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
      37.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
  37.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
                             
Equity investment 9,935,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
12,978,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
    9,935,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
  9,935,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
                             
WPC | Eroski Sociedad Cooperativa Mallorca                                            
Footnote Details                                            
Ownership interest, percentage 30.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
      30.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
  30.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
                             
Impairment charges 800,000us-gaap_OtherAssetImpairmentCharges
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
                                         
Equity investment 7,662,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
9,639,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
    7,662,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
  7,662,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_W.P.CareyMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_EroskiSociedadCooperativaMallorcaMember
                             
CPA 14 | Hellweg 2                                            
Footnote Details                                            
Ownership interest, percentage                                       33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa14Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
   
CPA 15 | Hellweg 2                                            
Footnote Details                                            
Ownership interest, percentage                                       40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa15Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
   
CPA 16 - Global | Hellweg 2                                            
Footnote Details                                            
Ownership interest, percentage                                       27.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa16Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_HellwegDieProfiBaumarktGmbhAndCoKgMember
   
CPA 18 - Global | Bank Pekao                                            
Footnote Details                                            
Ownership interest, percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
    50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
  50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
                      50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
     
Equity investment 31,045,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
0us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
    31,045,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
  31,045,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_BankPekaoMember
                             
CPA 18 - Global | State Farm                                            
Footnote Details                                            
Ownership interest, percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
      50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
  50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
                             
Equity investment 20,414,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
20,913,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
    20,414,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
  20,414,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= cpa17_Cpa18Member
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cpa17_StateFarmMember
                             
Equity Investments                                            
Footnote Details                                            
Acquisition-related cost and fees, capitalized 6,800,000cpa17_TransactionFeesIncurred
/ us-gaap_FairValueByAssetClassAxis
= cpa17_EquityInvestmentsMember
6,000,000cpa17_TransactionFeesIncurred
/ us-gaap_FairValueByAssetClassAxis
= cpa17_EquityInvestmentsMember
                                       
Unconsolidated equity investments                                            
Footnote Details                                            
Proceeds from equity method investments 28,700,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
/ us-gaap_FairValueByAssetClassAxis
= cpa17_UnconsolidatedEquityInvestmentsMember
18,100,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
/ us-gaap_FairValueByAssetClassAxis
= cpa17_UnconsolidatedEquityInvestmentsMember
31,900,000us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
/ us-gaap_FairValueByAssetClassAxis
= cpa17_UnconsolidatedEquityInvestmentsMember
                                     
Real estate                                            
Footnote Details                                            
Acquisition-related cost and fees, capitalized 3,600,000cpa17_TransactionFeesIncurred
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
2,200,000cpa17_TransactionFeesIncurred
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
                                       
Investment purchase price 40,700,000cpa17_InvestmentPurchasePrice
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
44,400,000cpa17_InvestmentPurchasePrice
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
                                       
Transfer of assets noncash   3,500,000cpa17_TransferOfAssetsNoncash
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
                                       
Real estate | State Farm                                            
Footnote Details                                            
Non-recourse mortgage loans                           72,800,000us-gaap_NonRecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Share of the non-recourse debt                           36,400,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Ownership interest, percentage                           50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Net Assets                           115,600,000us-gaap_AssetsNet
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Acquisition-related cost and fees, capitalized                           5,600,000cpa17_TransactionFeesIncurred
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Equity investment                           57,800,000us-gaap_EquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Interest rate on debt                           4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_StateFarmMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
               
Debt instrument maturity date                           Sep. 10, 2023                
Real estate | Agrokor d.d.                                            
Footnote Details                                            
Non-recourse mortgage loans                             42,900,000us-gaap_NonRecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
             
Share of the non-recourse debt                             8,600,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
             
Ownership interest, percentage                               20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
           
Net Assets                               97,000,000us-gaap_AssetsNet
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
           
Acquisition-related cost and fees, capitalized                               6,300,000cpa17_TransactionFeesIncurred
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
           
Equity investment                               19,400,000us-gaap_EquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
           
Interest rate on debt                             5.80%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_Agrokord.d.Member
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
             
Debt instrument maturity date                             Dec. 31, 2020              
Real estate | Apply AS                                            
Footnote Details                                            
Non-recourse mortgage loans                                 53,300,000us-gaap_NonRecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Share of the non-recourse debt                                 26,100,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Ownership interest, percentage                                 49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Net Assets                                 108,300,000us-gaap_AssetsNet
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Acquisition-related cost and fees, capitalized                                 5,700,000cpa17_TransactionFeesIncurred
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Deferred tax liability                                 12,500,000us-gaap_DeferredTaxLiabilities
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Equity investment                                 53,100,000us-gaap_EquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Interest rate on debt                                 4.40%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_ApplyASMember
/ us-gaap_RealEstatePropertiesAxis
= us-gaap_RealEstateMember
         
Debt instrument maturity date                                 Oct. 31, 2021          
Business combinations | Bank Pekao                                            
Footnote Details                                            
Non-recourse mortgage loans                                   73,100,000us-gaap_NonRecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
       
Share of the non-recourse debt                                   36,600,000cpa17_EquityMethodInvestmentUnderlyingEquityInNonrecourseDebt
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
       
Ownership interest, percentage       50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
                            50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
     
Acquisition costs, expensed                                     8,400,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
     
Net Assets       147,900,000us-gaap_AssetsNet
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
                            147,900,000us-gaap_AssetsNet
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
     
Equity investment       $ 74,000,000us-gaap_EquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
                            $ 74,000,000us-gaap_EquityMethodInvestments
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
     
Interest rate on debt                                   3.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= cpa17_BankPekaoMember
/ us-gaap_RealEstatePropertiesAxis
= cpa17_BusinessCombinationsMember
       
Debt instrument maturity date                                   Mar. 10, 2021