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Cover
 12 Months Ended
Dec. 31, 2022
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Current Fiscal Year End Date --12-31
Document Period End Date Dec. 31, 2022
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-04546
Entity Registrant Name UNILEVER PLC
Entity Address, Address Line One 100 Victoria Embankment
Entity Address, City or Town London
Entity Address, Country GB
Entity Incorporation, State or Country Code X0
Entity Address, Postal Zip Code EC4Y 0DY
Security Reporting Obligation 15(d)
Entity Common Stock, Shares Outstanding 2,629,243,772
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 Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Amendment Flag false
Document Fiscal Year Focus 2022
Document Fiscal Period Focus FY
Entity Central Index Key 0000217410
Ordinary shares  
Document Information [Line Items]  
Title of 12(b) Security Ordinary shares, nominal value of 3 1/9 pence per share
Trading Symbol ULVR
Security Exchange Name NYSE
American Depositary Shares  
Document Information [Line Items]  
Title of 12(b) Security American Depositary Shares (evidenced by Depositary Receipts) each representing one ordinary share of the nominal amount of 3 1/9p each
Trading Symbol UL
Security Exchange Name NYSE
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 100 Victoria Embankment
Entity Address, City or Town London
Entity Address, Country GB
Contact Personnel Name Maria Varsellona
City Area Code +44
Local Phone Number 7795 562319
Entity Address, Postal Zip Code EC4Y 0DY