Consolidated Statements of Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock Transactions, Parenthetical Disclosures [Abstract]
Distributions Declared Per Share (usd per share)	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.3250	$ 0.3250

Distribution of earnings in the form of cash, property or capital stock declared by the board of directors to be distributed to shareholders.

No definition available.

Name:	cpa17_DistributionsDeclaredPerShare
Namespace Prefix:	cpa17_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration