Segment Reporting (Summary Of The Operating Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Segment Reporting Information [Line Items]
Revenue	$ 840,149	$ 727,830	$ 2,476,672	$ 2,115,420
Cost of revenues	140,065	119,577	431,533	372,606
Operating expenses	511,930	439,015	1,487,349	1,250,551
Total costs and expenses	651,995	558,592	1,918,882	1,623,157
Operating earnings (loss)	188,154	169,238	557,790	492,263
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	741,830	641,541	2,206,297	1,837,171
Cost of revenues	126,223	107,560	389,344	327,356
Operating expenses	170,709	148,478	497,428	439,345
Total costs and expenses	296,932	256,038	886,772	766,701
Operating earnings (loss)	444,898	385,503	1,319,525	1,070,470
Global Segment
Segment Reporting Information [Line Items]
Revenue	98,319	86,289	270,375	278,249
Cost of revenues	13,842	12,017	42,189	45,250
Operating expenses	30,531	34,078	98,835	84,685
Total costs and expenses	44,373	46,095	141,024	129,935
Operating earnings (loss)	53,946	40,194	129,351	148,314
Other
Segment Reporting Information [Line Items]
Revenue
Cost of revenues
Operating expenses	310,690	256,459	891,086	726,521
Total costs and expenses	310,690	256,459	891,086	726,521
Operating earnings (loss)	$ (310,690)	$ (256,459)	$ (891,086)	$ (726,521)