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Note 32 - Capital Base and Capital Management - Leverage Ratio (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Capital Base And Capital Management      
Tier 1 eligible capital resources capital base € 45,945 [1] € 46,980 € 50,083
Exposure (thousand of euros) € 705,406 [1] € 700,443 € 747,216
Leverage Ratio 6.51% 6.71% 6.70%
[1]

(*) P rovisional data .