Acquisitions (Details) (USD $)	6 Months Ended
	Jun. 30, 2013 tower		Jun. 30, 2012
Business Acquisition [Line Items]
Goodwill not expected to be deductible for tax purposes	$ 371,300,000
Tower Count	31,600
Share-based Compensation	19,472,000		17,105,000
Net revenues			1,309,132,000	[1]
Net income (loss)			155,872,000	[2],[3]
Basic net income (loss) attributable to CCIC common stockholders, after deduction of dividends on preferred stock, per common share			$ 0.53
Diluted net income (loss) attributable to CCIC common stockholders, after deduction of dividends on preferred stock, per common share			$ 0.53
Purchase Price allocation change since year end [Member]
Business Acquisition [Line Items]
Property and equipment	31,200,000
Below-market tenant leases and other non-current liabilities	45,000,000
T-Mobile [Member]
Business Acquisition [Line Items]
Current assets	17,854,000
Property and equipment	1,490,594,000
Goodwill	438,758,000	[4]
Other intangible assets, net	407,000,000
Below-market tenant leases and other non-current liabilities	(76,349,000)	[5]
Deferred income tax liabilities	207,929,000
Net assets acquired	2,485,786,000
Business acquisition, cost of acquired entity, purchase price	2,500,000,000
Pro forma revenue adjustments [Member]
Business Acquisition [Line Items]
Business acquisition, pro forma adjustment	129,900,000
Depreciation, Amortization and Accretion [Member]
Business Acquisition [Line Items]
Business acquisition, pro forma adjustment			$ 77,800,000
Total T-Mobile Towers [Member]
Business Acquisition [Line Items]
Tower Count	7,100

[1] For the six months ended June 30, 2012, amounts are inclusive of pro forma adjustments to increase net revenues of $129.9 million that we expect to recognize from the T-Mobile towers, including T-Mobile's contracted lease of space on the towers acquired in the T-Mobile Acquisition.

[2] For the six months ended June 30, 2012, amounts are inclusive of pro forma adjustments to increase depreciation and amortization of $77.8 million related to property and equipment and intangibles recorded as a result of the combined effect of the WCP Acquisition, NextG Acquisition, and T-Mobile Acquisition.

[3] For the six months ended June 30, 2012, the pro forma adjustments are tax effected using the federal statutory rate and no adjustment was made with respect to the Company's reversal of valuation allowance.

[4] The preliminary purchase price allocation for the T-Mobile Acquisition resulted in the recognition of goodwill at CCUSA primarily because of the anticipated growth opportunities in the tower portfolio. In addition, $371.3 million is not expected to be deductible for tax purposes.

[5] Inclusive of above-market leases for land interests under the Company's towers.