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Goodwill and intangible assets - Summary of Goodwill and Indefinite-Life Intangible Assets Held in Significant CGUs (Details) - EUR (€)
€ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about intangible assets [line items]    
Goodwill € 21,109 € 21,609
Indefinite- life intangible assets 17,600 18,200
Total Significant CGUs    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 21,100 21,600
Indefinite- life intangible assets 11,200 11,600
Beauty & Wellbeing    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 4,600 4,900
Beauty & Wellbeing | North Asia    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 1,400 1,500
Prestige    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 2,700 2,800
Health & Wellness    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 1,600 1,600
Personal Care    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 3,900 4,100
Home Care    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 900 900
Nutrition    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 8,000 8,300
Nutrition | South Asia    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 3,200 3,300
Nutrition | Europe, ANZ & METU    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 1,300 1,400
Nutrition | North America    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets 1,000 1,000
Ice Cream    
Disclosure of detailed information about intangible assets [line items]    
Goodwill 3,700 3,400
Other    
Disclosure of detailed information about intangible assets [line items]    
Indefinite- life intangible assets € 6,400 € 6,600