Acquisitions (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Business Acquisition [Line Items]
Share-based Compensation	$ 11,956,000	$ 10,029,000
Net revenues		844,044,000	[1]
Net income (loss)		9,214,000	[2],[3]
Basic net income (loss) attributable to CCIC common stockholders, after deduction of dividends on preferred stock, per common share		$ (0.01)	[4]
Diluted net income (loss) attributable to CCIC common stockholders, after deduction of dividends on preferred stock, per common share		$ (0.01)	[4]
Acquisition and integration costs	5,659,000	1,602,000
AT T [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	4,827,000,000.000
Acquisition and integration costs	4,700,000
Pro forma revenue adjustments [Member]
Business Acquisition [Line Items]
Business acquisition, pro forma adjustment		55,100,000
Depreciation, Amortization and Accretion [Member]
Business Acquisition [Line Items]
Business acquisition, pro forma adjustment		$ 55,200,000
Total ATT Towers [Member]
Business Acquisition [Line Items]
Tower Count	24.00%

[1] Amounts are inclusive of pro forma adjustments to increase net revenues of $55.1 million that the Company expects to recognize from AT&T under AT&T's contracted lease of space on the towers acquired in the AT&T Acquisition.

[2] The pro forma adjustments reflect the federal statutory rate and an estimated state rate. No adjustment was made with respect to the Company's REIT election.

[3] Amounts are inclusive of pro forma adjustments to increase depreciation and amortization of $55.2 million related to property and equipment and intangibles recorded as a result of the AT&T Acquisition.

[4] Pro forma amounts include the impact of the interest expense associated with the related debt financing as well as the impact of the common stock and preferred stock offerings completed in October 2013.