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Note 53 - Related-Party Transactions - Balance Of Income Statement Arising From Transactions With Entities Of The Group (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Related Party Transactions Abstract      
Financial incomes € 55 € 26 € 26
Financial costs 2 1 1
Fee And Commission Income 5 5 5
Fee And Commission Expense € 48 € 49 € 58