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Goodwill and Intangible Assets - Summary of Net Book Value Goodwill and Intangible Assets (Parenthetical) (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Indefinite-life intangible assets that have significant carrying value € 29,493 € 28,401
Disposal Groups Held for Sale [member]    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Goodwill and intangible assets reclassified as held for sale 283 2,311
Indefinite-life intangible assets that have significant carrying value 82 2,311
Knorr [member]    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Indefinite-life intangible assets that have significant carrying value 1,789 1,770
Carver Korea [member]    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Indefinite-life intangible assets that have significant carrying value 1,534 1,520
Hellmann's [member]    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Indefinite-life intangible assets that have significant carrying value € 1,195 € 1,160