Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 30, 2017
Feb. 10, 2018
Jul. 01, 2017
Document and Entity Information [Abstract]      
Document Type 10-K    
Document Period End Date Dec. 30, 2017    
Amendment Flag false    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Entity Registrant Name Kraft Heinz Co    
Entity Central Index Key 0001637459    
Current Fiscal Year End Date --12-30    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 52
Entity Common Stock, Shares Outstanding   1,218,801,890