XML 16 R46.htm IDEA: XBRL DOCUMENT v2.4.1.9
Share-Based Compensation (Compensation Expense Recognized In The Condensed Consolidated Statements Of Operations) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Amounts charged against earnings, before income tax benefit $ 16,457us-gaap_AllocatedShareBasedCompensationExpense $ 14,768us-gaap_AllocatedShareBasedCompensationExpense
Amount of related income tax benefit recognized in earnings 5,533us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 5,184us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Stock option and non-vested share compensation expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Amounts charged against earnings, before income tax benefit 15,161us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_StockOptionAndNonVestedShareCompensationExpenseMember
13,649us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_StockOptionAndNonVestedShareCompensationExpenseMember
Associate stock purchase plan expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Amounts charged against earnings, before income tax benefit 1,388us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_AssociateStockPurchasePlanExpenseMember
1,283us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_AssociateStockPurchasePlanExpenseMember
Amounts capitalized in software development costs, net of amortization    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Amounts charged against earnings, before income tax benefit $ (92)us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_AmountsCapitalizedInSoftwareDevelopmentCostsMember
$ (164)us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= cern_AmountsCapitalizedInSoftwareDevelopmentCostsMember