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Note 12 Financial assets at fair value through other comprehensive income debt securities by rating (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
Dec. 31, 2021
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 61,584 € 59,074
Percentage of debt securities by rating 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 € 3,656 € 2,413
Percentage of debt securities by rating 5.90% 4.10%
BBVA AA Plus Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 527 € 586
Percentage of debt securities by rating 0.90% 1.00%
BBVA AA Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 511 € 646
Percentage of debt securities by rating 0.80% 1.10%
BBVA AA Minus Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 473 € 327
Percentage of debt securities by rating 0.80% 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 € 5,543 € 6,179
Percentage of debt securities by rating 9.00% 10.50%
BBVA A Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 1,581 € 1,676
Percentage of debt securities by rating 2.60% 2.80%
BBVA A Minus Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 20,293 € 18,760
Percentage of debt securities by rating 33.00% 31.80%
BBVA BBB Plus Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 11,392 € 11,465
Percentage of debt securities by rating 18.50% 19.40%
BBVA BBB Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 8,876 € 10,961
Percentage of debt securities by rating 14.40% 18.60%
BBVA BBB Minus Rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 1,331 € 1,310
Percentage of debt securities by rating 2.20% 2.20%
BBVA BB Plus or below rating [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 7,093 € 4,379
Percentage of debt securities by rating 11.50% 7.40%
Unclassified [Member]    
Avaiable for sale financial assets debt securities by rating [Line Items]    
Fair value of debt securities by rating € 308 € 372
Percentage of debt securities by rating 0.50% 0.60%