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Property Acquisitions, Discontinued Operations, And Assets Held For Sale (Pro Forma Consolidated Income Statement Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009
Property Acquisitions Discontinued Operation And Assets Held For Sale [Abstract]
Property revenues	$ 618,611	$ 621,101
Property operating income	$ 368,264	$ 375,252

X

- Definition

This element represents the pro forma amount of earnings or operating income, which represents property revenues less property expenses, as adjusted for current year discontinued operations, and assuming the acquisition of control of joint ventures had occurred at the beginning of the periods disclosed.

+ References

No definition available.

+ Details

Name:	cpt_BusinessAcquisitionsProFormaOperatingIncomeLessDiscontinuedOperations
Namespace Prefix:	cpt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The pro forma revenue for a period, as adjusted for current year discontinued operations, as if the business combination or combinations had been completed at the beginning of the period.

+ References

No definition available.

+ Details

Name:	cpt_BusinessAcquisitionsProFormaRevenueLessDiscontinuedOperations
Namespace Prefix:	cpt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	cpt_PropertyAcquisitionsDiscontinuedOperationAndAssetsHeldForSaleAbstract
Namespace Prefix:	cpt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration