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Note 36 - Transactions on behalf of third parties (Details) - EUR (€)
€ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Transactions On Behalf Of Third Parties Abstract      
Financial instruments entrusted by third parties € 628,417 € 624,822 € 637,761
Conditional bills and other securities received for collection 13,484 14,775 16,054
Securities Lending 4,866 5,485 3,968
Total Transactions Third Parties € 646,768 € 645,081 € 657,783