Equity (Details 1) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Distributions Per Share [Abstract]
Ordinary income	$ 0.3022	$ 0.3981	$ 0.3391
Capital gain	$ 0	$ 0	$ 0.0003
Return of capital	$ 0.3478	$ 0.2519	$ 0.3006
Total distributions	$ 0.6500	$ 0.6500	$ 0.6400

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.

Name:	cpa17_DistributionsPerShare
Namespace Prefix:	cpa17_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration