Goodwill and Other Intangible Assets (Schedule of Changes in Carrying Amounts of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Beginning Balance	$ 844,200	$ 799,182
Purchase price allocation adjustments for Cerner Health Services		46,940
Foreign currency translation adjustment and other	8,805	(1,922)
Ending Balance	853,005	844,200
Domestic Segment [Member]
Goodwill [Roll Forward]
Beginning Balance	782,664	730,837
Purchase price allocation adjustments for Cerner Health Services		51,827
Foreign currency translation adjustment and other	0	0
Ending Balance	782,664	782,664
Global Segment [Member]
Goodwill [Roll Forward]
Beginning Balance	61,536	68,345
Purchase price allocation adjustments for Cerner Health Services		(4,887)
Foreign currency translation adjustment and other	8,805	(1,922)
Ending Balance	$ 70,341	$ 61,536