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Nota 54 - Remuneration And Other Benefits Received ByThe Board Of Directors And Members Of The Bank's Senior Management - Pension Commitments (Details) - EUR (€)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Pension Commitments Line Items      
Employer Contributions € (124,000,000) € (65,000,000) € (103,000,000)