Cover Page - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Nov. 19, 2025	Mar. 29, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 27, 2025
Current Fiscal Year End Date	--09-27
Document Transition Report	false
Entity File Number	1-33268
Entity Registrant Name	CENTRAL GARDEN & PET CO
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	68-0275553
Entity Address, Address Line One	1340 Treat Boulevard
Entity Address, Address Line Two	Suite 600
Entity Address, City or Town	Walnut Creek
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94597
City Area Code	925
Local Phone Number	948-4000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction Flag	false
Entity Shell Company	false
Documents Incorporated by Reference	Definitive Proxy Statement for the Company’s 2026 Annual Meeting of Shareholders – Part III of this Form 10-K
Amendment Flag	false
Entity Central Index Key	0000887733
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Common stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock
Trading Symbol	CENT
Security Exchange Name	NASDAQ
Entity Public Float			$ 311,900
Entity Common Stock, Shares Outstanding		9,650,221
Class A common stock
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	CENTA
Security Exchange Name	NASDAQ
Entity Public Float			1,600,000
Entity Common Stock, Shares Outstanding		51,080,111
Class B stock
Document Information [Line Items]
Entity Public Float			$ 69
Entity Common Stock, Shares Outstanding		1,602,374