Acquisition

No definition available.

Name:	cpa17_AcquisitionAbstract
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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Amount of assets under construction that are now placed into service as the balance sheet date.

+ References

No definition available.

+ Details

Name:	cpa17_ConstructionInProgressPlacedIntoService
Namespace Prefix:	cpa17_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Construction costs capitalized to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

+ References

No definition available.

+ Details

Name:	cpa17_FundsCapitalizedForConstructionInProgress
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total cost to acquire investments. In instances where the acquired investment is categorized as a business combination the investment price excludes fees and expenses related to the acquisition, whereas when the investment is categorized as an real estate acquisition the acquisition fees are capitalized.

+ References

No definition available.

+ Details

Name:	cpa17_InvestmentPurchasePrice
Namespace Prefix:	cpa17_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of construction projects that have been completed and reclassified out of construction in progress to an appropriate asset account.

+ References

No definition available.

+ Details

Name:	cpa17_NumberOfCompletedConstructionProjects
Namespace Prefix:	cpa17_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of construction projects currently in progress.

+ References

No definition available.

+ Details

Name:	cpa17_NumberOfConstructionProjectsDuringPeriod
Namespace Prefix:	cpa17_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of properties sold during the period.

+ References

No definition available.

+ Details

Name:	cpa17_NumberOfPropertiesSold
Namespace Prefix:	cpa17_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Properties Held For Sale

+ References

No definition available.

+ Details

Name:	cpa17_NumberofPropertiesHeldForSale
Namespace Prefix:	cpa17_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of Gain On Sale Recognized

+ References

No definition available.

+ Details

Name:	cpa17_PercentageofGainOnSaleRecognized
Namespace Prefix:	cpa17_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The potential percentage of voting equity interests to be acquired of a company, should we exercise the option to as disclosed in the contract.

+ References

No definition available.

+ Details

Name:	cpa17_PotentialBusinessAcquisitionPercentageofVotingInterestsAcquired
Namespace Prefix:	cpa17_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of commitment unfunded as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	cpa17_UnfundedCommitment
Namespace Prefix:	cpa17_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of real estate acquired, at the acquisition date.

+ References

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

+ References

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 210.5-02.19(a)(1))
-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 19, 20
-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 40
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.U.Q2)
-URI http://asc.fasb.org/extlink&oid=6955272&loc=d3e221323-122791

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760

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-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=51716988&loc=d3e957-107759

+ Details

Name:	us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_ForeignCurrencyTranslationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b,c)
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-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Change in carrying amount of other real estate not separately disclosed. The change includes for example, but is not limited to, additions, improvements, disposals and valuation adjustments.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherRealEstatePeriodIncreaseDecrease
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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase in real estate investments related to improvements for entities with a substantial portion of business acquiring and holding investment real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule III)
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-SubTopic 360
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-Paragraph 1
-Subparagraph (SX 210.12-28.4)
-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
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Period Type:

- Details

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Net Investments in Properties and Real Estate Under Construction (Narratives) (Details) $ in Thousands				3 Months Ended
	Feb. 10, 2016 USD ($)	Jan. 08, 2016 USD ($)	Apr. 24, 2014 USD ($)	Mar. 31, 2016 USD ($) property	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014	Dec. 01, 2011
Foreign Currency Translation
Effects of foreign currency translation on balance sheet item				$ 31,328	$ (88,730)
Acquisition
Acquired finite-lived intangible asset, amount				1,309
Acquisition costs, expensed				1,357	603
Gain on sale of real estate, net of tax				25,398	2,197
Construction loan				$ 1,000
Number of construction projects put in service \| property				1
Ishops
Acquisition
Potential percentage of voting available acquired									15.00%
Gain on sale of real estate, net of tax			$ 14,600		$ 2,200	$ 12,400
Percentage of gain on sale recognized					15.00%	85.00%		85.00%
Deferred gain on the sale of property					$ 2,200
Real estate
Foreign Currency Translation
Effects of foreign currency translation on balance sheet item				$ 43,000
Acquisition
Investment purchase price				21,500
Business combination, land acquired				3,100
Business combination, buildings				17,100
Acquired finite-lived intangible asset, amount				1,300
Acquisition costs, expensed				1,100
Building improvements				500
Real estate \| Student Accomidation in Jacksonville, FL
Acquisition
Investment purchase price		$ 17,300
Real estate \| Industrial facility in Houston, TX
Acquisition
Investment purchase price	$ 4,200
Operating real estate
Acquisition
Building improvements				$ 200
Number of properties sold \| property				3
Decrease in carrying value of real estate				$ 21,000
Real estate under construction
Acquisition
Decrease in carrying value of real estate				36
Capitalized funds				1,471
Assets placed into service, value				484
Unfunded commitments				1,800			$ 2,800
Ongoing Build-to-Suit Projects \| Real estate under construction
Acquisition
Capitalized funds				$ 500
Number of open construction projects \| property				1
Held-for-sale
Acquisition
Number of properties held for sale, count \| property				5