Per Share Information (Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Per Share Information
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 112,114	$ 86,058	$ 231,252	$ 133,898
Net income (Loss) from Continuing Operations Attributable to Parent			231,252	133,898
Dividends on preferred stock	0	10,997	0	21,994
Net income (loss) attributable to CCIC common stockholders for basic and diluted computations	$ 112,114	$ 75,061	$ 231,252	$ 111,904
Basic weighted-average number of common stock outstanding	364,493,000	337,560,000	362,662,000	335,857,000
Effect of assumed dilution from potential common shares relating to restricted stock units and restricted stock awards	1,339,000	1,049,000	1,230,000	801,000
Diluted weighted-average number of common shares outstanding	365,832,000	338,609,000	363,892,000	336,658,000
Basic	$ 0.31	$ 0.22	$ 0.64	$ 0.33
Diluted	$ 0.31	$ 0.22	$ 0.64	$ 0.33