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Note 13 Financial assets at fair value through other comprehensive income debt securities by rating (Details) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 57,755 € 59,074 € 68,308
Percentage of debt securities by rating 100.00% 100.00% 100.00%
BBVA AAA Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 3,339 € 2,413 € 4,345
Percentage of debt securities by rating 5.80% 4.10% 6.40%
BBVA AA Plus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 490 € 586 € 595
Percentage of debt securities by rating 0.80% 1.00% 0.90%
BBVA AA Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 416 € 646 € 449
Percentage of debt securities by rating 0.70% 1.10% 0.70%
BBVA AA Minus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 472 € 327 € 406
Percentage of debt securities by rating 0.80% 0.60% 0.60%
BBVA A plus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 3,866 € 6,179 € 5,912
Percentage of debt securities by rating 6.70% 10.50% 8.70%
BBVA A Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 1,663 € 1,676 € 2,112
Percentage of debt securities by rating 2.90% 2.80% 3.10%
BBVA A Minus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 20,350 € 18,760 € 31,614
Percentage of debt securities by rating 35.20% 31.80% 46.30%
BBVA BBB Plus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 11,423 € 11,465 € 8,629
Percentage of debt securities by rating 19.80% 19.40% 12.60%
BBVA BBB Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 7,328 € 10,961 € 4,054
Percentage of debt securities by rating 12.70% 18.60% 5.90%
BBVA BBB minus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 964 € 1,310 € 5,116
Percentage of debt securities by rating 1.70% 2.20% 7.50%
BBVA BB Plus Rating [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 7,202 € 4,379 € 4,731
Percentage of debt securities by rating 12.50% 7.40% 6.90%
Unclassified [Member]      
Avaiable for sale financial assets debt securities by rating [Line Items]      
Fair value of debt securities by rating € 241 € 372 € 345
Percentage of debt securities by rating 0.40% 0.60% 0.50%