Segment Reporting (Summary Of The Operating Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Mar. 29, 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	$ 996,089	$ 784,761
Cost of revenues	168,660	129,099
Operating expenses	660,517	477,659
Total costs and expenses	829,177	606,758
Operating earnings (loss)	166,912	178,003
Domestic Segment
Segment Reporting Information [Line Items]
Revenue	870,507	697,704
Cost of revenues	142,717	115,345
Operating expenses	361,086	273,990
Total costs and expenses	503,803	389,335
Operating earnings (loss)	366,704	308,369
Global Segment
Segment Reporting Information [Line Items]
Revenue	125,582	87,057
Cost of revenues	25,943	13,754
Operating expenses	50,571	45,069
Total costs and expenses	76,514	58,823
Operating earnings (loss)	49,068	28,234
Other
Segment Reporting Information [Line Items]
Operating expenses	248,860	158,600
Total costs and expenses	248,860	158,600
Operating earnings (loss)	$ (248,860)	$ (158,600)