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Capital and funding - Summary of Analysis of Bonds and Other Loans (Details) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]    
Total bonds and other loans € 26,512 € 27,621
Borrowings, fair value adjustment (537) (47)
Unilever PLC | Bonds and other loans    
Disclosure of detailed information about borrowings [line items]    
Borrowings (2,072) (2,488)
Other Group Companies    
Disclosure of detailed information about borrowings [line items]    
Borrowings (24,440) (25,133)
Bonds and other loans    
Disclosure of detailed information about borrowings [line items]    
Total bonds and other loans € 26,512 € 27,621