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Note 36 Transactions on behalf of third parties breakdown by concepts (Details) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Transactions on behalf of third parties [Line Items]      
Financial instruments entrusted by third parties € 352,139 € 356,985 € 357,022
Conditional bills and other securities received for collection 11,738 10,795 10,459
Securities lending on behalf of third parties 3,223 2,605 5,285
Total transactions on behalf of third parties € 367,100 € 370,385 € 372,766