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Income Taxes (Details Textuals) (USD $)
3 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Income Tax (Textuals)    
Effective Income Tax Rate, Continuing Operations 22.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations 12.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations
other tax item   $ (398,000,000)jnj_Othertaxitem
Other tax item percent   7.30%jnj_Othertaxitempercent
Unrecognized tax benefits $ 2,500,000,000us-gaap_UnrecognizedTaxBenefits