Equity (Narratives) (Details) (USD $)	3 Months Ended	12 Months Ended
Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity Note [Abstract]
Distributions declared per share	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.6500	$ 0.6500	$ 0.6475
Distributions Paid Per Share									$ 0.6500	$ 0.6500	$ 0.6500

The distributions per share paid to stockholders reported, which consist of ordinary income, capital gains, return of capital or a combuination thereof for income tax purposes.

No definition available.

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