Property and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Plant and equipment
Property and equipment	$ 4,014,770,000	$ 3,372,277,000
Less accumulated depreciation	(1,283,973,000)	(1,095,077,000)
Property and equipment, net	2,730,797,000	2,277,200,000
Property and equipment increase, total, due primarily to acquisition	642,500,000
Depreciation expense	244,500,000	209,300,000	206,600,000
Interest capitalized in connection with major construction projects	8,400,000	5,600,000	5,500,000
Pre-tax impairment charge of land purchased in Columbus's Arena District			31,300,000
After tax impairment charge of land purchased in Columbus's Arena District			20,100,000
Land and improvements
Plant and equipment
Property and equipment	442,882,000	362,402,000
Building and improvements
Plant and equipment
Property and equipment	2,283,230,000	1,715,144,000
Furniture, fixtures and equipment
Plant and equipment
Property and equipment	1,240,898,000	1,021,362,000
Leasehold improvements
Plant and equipment
Property and equipment	17,229,000	16,910,000
Construction in progress
Plant and equipment
Property and equipment	$ 30,531,000	$ 256,459,000