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Note 36 Transactions on behalf of third parties breakdown by concepts (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Transactions on behalf of third parties [Line Items]      
Financial instruments entrusted by third parties € 356,985 € 357,022 € 693,497
Conditional bills and other securities received for collection 10,795 10,459 13,133
Securities lending on behalf of third parties 2,605 5,285 7,129
Total transactions on behalf of third parties € 370,385 € 372,766 € 713,759