Segment Reporting (Summary Of The Operating Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Segment Reporting Information [Line Items]
Revenue	$ 1,138,135	$ 996,089
Cost of revenues	175,593	168,660
Operating expenses	747,094	660,517
Total costs and expenses	922,687	829,177
Operating earnings (loss)	215,448	166,912
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	1,004,965	870,507
Cost of revenues	149,269	142,717
Operating expenses	425,559	361,086
Total costs and expenses	574,828	503,803
Operating earnings (loss)	430,137	366,704
Global Segment
Segment Reporting Information [Line Items]
Revenue	133,170	125,582
Cost of revenues	26,324	25,943
Operating expenses	58,871	50,571
Total costs and expenses	85,195	76,514
Operating earnings (loss)	47,975	49,068
Other
Segment Reporting Information [Line Items]
Operating expenses	262,664	248,860
Total costs and expenses	262,664	248,860
Operating earnings (loss)	$ (262,664)	$ (248,860)