Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.10.0.1
Document and Entity Information - USD ($)
$ in Thousands
 12 Months Ended
Sep. 29, 2018
Nov. 16, 2018
Mar. 31, 2018
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 29, 2018    
Document Fiscal Year Focus 2018    
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 --09-29    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   12,145,135  
Entity Public Float     $ 444,100
Class A common stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   44,015,524  
Entity Public Float     1,420,500
Class B stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,652,262  
Entity Public Float     $ 269