Segment Reporting (Summary Of The Operating Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 680,029	$ 641,212
Cost of revenues	127,229	158,008
Operating expenses	396,231	355,765
Total costs and expenses	523,460	513,773
Operating earnings	156,569	127,439
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	576,639	554,274
Cost of revenues	106,697	134,303
Operating expenses	147,756	120,438
Total costs and expenses	254,453	254,741
Operating earnings	322,186	299,533
Global Segment
Segment Reporting Information [Line Items]
Revenue	103,390	86,938
Cost of revenues	20,532	23,705
Operating expenses	25,630	32,751
Total costs and expenses	46,162	56,456
Operating earnings	57,228	30,482
Other
Segment Reporting Information [Line Items]
Revenue
Cost of revenues
Operating expenses	222,845	202,576
Total costs and expenses	222,845	202,576
Operating earnings	$ (222,845)	$ (202,576)