Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.5.0.2
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Sep. 24, 2016
Nov. 18, 2016
Mar. 26, 2016
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 24, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Trading Symbol CENT    
Entity Registrant Name CENTRAL GARDEN & PET CO    
Entity Central Index Key 0000887733    
Current Fiscal Year End Date --09-26    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 156.0
Common Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   11,998,472  
Class A Common Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   37,463,554  
Entity Public Float     515.0
Class B Stock [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,652,262  
Entity Public Float     $ 0.1