2.4.0.8040060 - Disclosure - Finance Receivables (Narratives) (Details)truefalsefalse1false USDfalsefalse$FROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001390213duration2013-01-01T00:00:002013-06-30T00:00:00PercentStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$FROM_Jan01_2012_TO_Dec31_2012http://www.sec.gov/CIK0001390213duration2012-01-01T00:00:002012-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1us-gaap_ReceivablesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Receivables2false 2us-gaap_FinancingReceivableCreditQualityAdditionalInformationus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00We generally seek investments in facilities that we believe are critical to each tenant’s business and that we believe have a low risk of tenant defaults. At both June 30, 2013 and December 31, 2012, none of the balances of our finance receivables were past due and we had not established any allowances for credit losses. Additionally, there have been no modifications of finance receivables during the six months ended June 30, 2013. We evaluate the credit quality of our tenant receivables utilizing an internal 5-point credit rating scale, with 1 representing the highest credit quality and 5 representing the lowest. falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringIncludes any additional disclosures related to the credit quality of financing receivables. This may include a description of a credit quality indicator or a description of how the internal risk ratings used by a company relate to the likelihood of loss.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953659-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953664-111524 false0Financing Receivable, Credit Quality, Additional Information3false 2us-gaap_FinancingReceivableCreditQualityRangeOfDatesRatingsUpdatedus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00second quarter of 2013falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringIncludes a disclosure detailing the range of dates that the consumer credit scores were last updated.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953659-111524 false0Financing Receivable, Credit Quality, Range of Dates Ratings Updated4false 2cpa17_AccountsReceivableBilledUnderDirectFinancingLeasescpa17_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse600000600000USD$falsetruefalse2truefalsefalse10000001000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryRepresents the amount of accounts receivable billed under direct financing leases included in Other asset, net on the balance sheet.No definition available.false2AR billed under DFL5false 2us-gaap_NotesReceivableNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse4000000040000000USD$falsetruefalse2truefalsefalse4000000040000000USD$falsetruefalsexbrli:monetaryItemTypemonetaryNet amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Notes receivable6false 2us-gaap_ReceivableWithImputedInterestEffectiveYieldInterestRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.110.11falsefalsefalse2falsetruefalse00falsefalsefalsenum:percentItemTypepureYield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Receivable with Imputed Interest, Effective Yield (Interest Rate)7false 2us-gaap_ReceivableWithImputedInterestDueDatesus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002015-12-14falsefalsetrue2falsefalsefalse00falsefalsefalsexbrli:dateItemTypedateDate the receivable or note with imputed interest is due, in CCYY-MM-DD format.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 false0Receivable with Imputed Interest, Due DatefalseFinance Receivables (Narratives) (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.cpa17global.com/role/DisclosureFinanceReceivablesNarrativesDetails27