Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Debt and Other Obligations [Abstract]
Total	$ 126,378	$ 134,439

The cost of borrowed funds and the amortization of interest rate swaps accounted for as interest that was charged against earnings during the period.

No definition available.

Name:	cci_InterestExpenseAndAmortizationOfDeferredFinancingCosts
Namespace Prefix:	cci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration