Segment Reporting (Summary Of The Operating Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Segment Reporting Information [Line Items]
Description of Effect on Previously Reported Segment Information for Change in Composition of Reportable Segments			In connection with our acquisition of the Cerner Health Services business, we commenced an evaluation of our methodology for allocating operating expenses to our reportable segments. Effective for our first quarter of 2015, certain expenses historically reported in “Other” have been allocated to the geographic segments. This new allocation reflects the manner in which the business is now managed, subsequent to the acquisition. While this reporting change did not impact our consolidated results, the segment data has been recast to be consistent for all periods presented.
Revenue	$ 1,125,997	$ 851,762	$ 2,122,086	$ 1,636,523
Cost of revenues	192,322	162,369	360,982	291,468
Operating expenses	761,939	497,760	1,422,456	975,419
Total costs and expenses	954,261	660,129	1,783,438	1,266,887
Operating earnings (loss)	171,736	191,633	338,648	369,636
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	994,746	766,763	1,865,253	1,464,467
Cost of revenues	168,189	147,776	310,906	263,121
Operating expenses	393,305	283,609	754,391	557,599
Total costs and expenses	561,494	431,385	1,065,297	820,720
Operating earnings (loss)	433,252	335,378	799,956	643,747
Global Segment
Segment Reporting Information [Line Items]
Revenue	131,251	84,999	256,833	172,056
Cost of revenues	24,133	14,593	50,076	28,347
Operating expenses	59,827	47,849	110,398	92,918
Total costs and expenses	83,960	62,442	160,474	121,265
Operating earnings (loss)	47,291	22,557	96,359	50,791
Other
Segment Reporting Information [Line Items]
Operating expenses	308,807	166,302	557,667	324,902
Total costs and expenses	308,807	166,302	557,667	324,902
Operating earnings (loss)	$ (308,807)	$ (166,302)	$ (557,667)	$ (324,902)