Segment Reporting (Summary Of The Operating Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Segment Reporting Information [Line Items]
Revenue	$ 1,184,557	$ 1,127,887	$ 3,538,654	$ 3,249,973
Cost of revenues	182,970	190,583	564,119	551,565
Operating expenses	759,362	721,950	2,275,550	2,144,406
Total costs and expenses	942,332	912,533	2,839,669	2,695,971
Operating earnings (loss)	242,225	215,354	698,985	554,002
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	1,055,037	997,954	3,132,566	2,863,207
Cost of revenues	161,625	169,181	488,404	480,087
Operating expenses	446,704	403,371	1,304,731	1,157,762
Total costs and expenses	608,329	572,552	1,793,135	1,637,849
Operating earnings (loss)	446,708	425,402	1,339,431	1,225,358
Global Segment
Segment Reporting Information [Line Items]
Revenue	129,520	129,933	406,088	386,766
Cost of revenues	21,345	21,402	75,715	71,478
Operating expenses	60,430	60,448	183,824	170,846
Total costs and expenses	81,775	81,850	259,539	242,324
Operating earnings (loss)	47,745	48,083	146,549	144,442
Other
Segment Reporting Information [Line Items]
Operating expenses	252,228	258,131	786,995	815,798
Total costs and expenses	252,228	258,131	786,995	815,798
Operating earnings (loss)	$ (252,228)	$ (258,131)	$ (786,995)	$ (815,798)