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Events after the balance sheet date (Details)
€ in Millions
1 Months Ended 12 Months Ended
Feb. 13, 2025
EUR (€)
Feb. 13, 2025
£ / shares
Feb. 08, 2024
EUR (€)
Feb. 08, 2024
£ / shares
Feb. 28, 2025
EUR (€)
Dec. 31, 2024
£ / shares
Dec. 31, 2023
£ / shares
Unilever PLC              
Disclosure of Non-adjusting Events after Reporting Period [Line Items]              
Dividends declared per ordinary share (in pounds per share) | £ / shares   £ 0.38   £ 0.36   £ 1.48 £ 1.48
Dividends declared € 1,121   € 1,067        
Dividend declaration | Unilever PLC              
Disclosure of Non-adjusting Events after Reporting Period [Line Items]              
Dividends declared per ordinary share (in pounds per share) | £ / shares   £ 0.3775          
Dividends declared € 1,121            
Share Buy Back Declaration | Top of range              
Disclosure of Non-adjusting Events after Reporting Period [Line Items]              
Share buyback program authorized amount         € 1,500