Segment Reporting (Summary Of The Operating Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 784,761	$ 680,029
Cost of revenues	129,099	127,229
Operating expenses	477,659	396,231
Total costs and expenses	606,758	523,460
Operating earnings (loss)	178,003	156,569
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	697,704	576,639
Cost of revenues	115,345	106,697
Operating expenses	161,066	147,756
Total costs and expenses	276,411	254,453
Operating earnings (loss)	421,293	322,186
Global Segment
Segment Reporting Information [Line Items]
Revenue	87,057	103,390
Cost of revenues	13,754	20,532
Operating expenses	33,342	25,630
Total costs and expenses	47,096	46,162
Operating earnings (loss)	39,961	57,228
Other
Segment Reporting Information [Line Items]
Revenue
Cost of revenues
Operating expenses	283,251	222,845
Total costs and expenses	283,251	222,845
Operating earnings (loss)	$ (283,251)	$ (222,845)