Segment Reporting (Summary Of The Operating Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Segment Reporting Information [Line Items]
Revenues	$ 676,482	$ 571,640	$ 1,955,052	$ 1,587,527
Cost of revenues	149,578	120,464	455,086	309,626
Operating expenses	379,208	330,784	1,088,748	955,837
Total costs and expenses	528,786	451,248	1,543,834	1,265,463
Operating earnings	147,696	120,392	411,218	322,064
Domestic Segment [Member]
Segment Reporting Information [Line Items]
Revenues	591,327	499,497	1,707,259	1,370,741
Cost of revenues	131,663	109,656	403,618	274,994
Operating expenses	131,787	110,775	372,668	322,250
Total costs and expenses	263,450	220,431	776,286	597,244
Operating earnings	327,877	279,066	930,973	773,497
Global Segment [Member]
Segment Reporting Information [Line Items]
Revenues	85,155	72,143	247,793	216,786
Cost of revenues	17,915	10,808	51,468	34,632
Operating expenses	32,794	33,412	97,616	94,182
Total costs and expenses	50,709	44,220	149,084	128,814
Operating earnings	34,446	27,923	98,709	87,972
Other [Member]
Segment Reporting Information [Line Items]
Revenues
Cost of revenues
Operating expenses	214,627	186,597	618,464	539,405
Total costs and expenses	214,627	186,597	618,464	539,405
Operating earnings	$ (214,627)	$ (186,597)	$ (618,464)	$ (539,405)