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Financial instruments fair value risk - Narrative (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Detailed Information about Financial Instruments [Line Items]    
Unlisted investments include of investment € 37 € 29
Level 3    
Disclosure of Detailed Information about Financial Instruments [Line Items]    
Impact in income statement due to Level 3 instruments 40 (22)
Long-term cash receivables insurance contracts 115 106
Option over a non-controlling interest 43 51
Unlisted Investment In Unilever Venture Companies € 736 € 494