Per Share Information (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Per Share Information
Net income (loss) attributable to CCIC stockholders	$ 50,031	$ 40,017
Dividends on preferred stock	(2,629)	(5,201)
Net income (loss) attributable to CCIC stockholders after deduction of dividends on preferred stock for basic and diluted computations	$ 47,402	$ 34,816
Basic weighted-average number of common stock outstanding	284,913,000	286,998,000
Effect of assumed dilution from potential common shares relating to stock options and restricted stock awards	940,000	2,007,000
Diluted weighted-average number of common shares outstanding	285,853,000	289,005,000
Basic	$ 0.17	$ 0.12
Diluted	$ 0.17	$ 0.12