Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2022	Mar. 22, 2022	Jul. 30, 2021
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 29, 2022
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Registrant Name	Petco Health and Wellness Company, Inc
Entity Central Index Key	0001826470
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--01-29
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 1,660
Title of 12(b) Security	Class A Common Stock, par value $0.001 per share
Trading Symbol	WOOF
Security Exchange Name	NASDAQ
Entity File Number	001-39878
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-1005932
Entity Address, Address Line One	10850 Via Frontera
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92127
City Area Code	858
Local Phone Number	453-7845
ICFR Auditor Attestation Flag	true
Document Annual Report	true
Document Transition Report	false
Auditor Name	Ernst & Young LLP
Auditor Location	San Diego, California
Auditor Firm ID	42
Documents Incorporated by Reference	The information required by Part III of this Annual Report on Form 10-K, to the extent not set forth herein, is incorporated herein by reference from the registrant’s definitive proxy statement to be filed pursuant to Regulation 14A in connection with the registrant’s 2022 annual meeting of stockholders within 120 days after the end of the fiscal year to which this Annual Report on Form 10-K relates.
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		227,444,570
Class B-1 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		37,790,781
Class B-2 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		37,790,781