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Note 14 Debt securities by rating (Details) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 43,606 € 34,781 € 35,737
Percentage of debt securities at amortized cost by rating 100.00% 100.00% 100.00%
BBVA AAA Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 3,068 € 143 € 151
Percentage of debt securities at amortized cost by rating 7.00% 0.40% 0.40%
BBVA AA plus [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 217 € 77 € 74
Percentage of debt securities at amortized cost by rating 0.50% 0.20% 0.20%
BBVA AA Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 86 € 76 € 64
Percentage of debt securities at amortized cost by rating 0.20% 0.20% 0.20%
BBVA AA Minus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 108 € 69 € 48
Percentage of debt securities at amortized cost by rating 0.20% 0.20% 0.10%
BBVA A plus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 13 € 62 € 42
Percentage of debt securities at amortized cost by rating 0.00% 0.20% 0.00%
BBVA A Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 592 € 619 € 590
Percentage of debt securities at amortized cost by rating 1.40% 1.80% 1.70%
BBVA A Minus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 17,050 € 16,312 € 16,736
Percentage of debt securities at amortized cost by rating 39.10% 46.90% 46.80%
BBVA BBB Plus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 11,037 € 9,336 € 7,919
Percentage of debt securities at amortized cost by rating 25.30% 26.80% 22.20%
BBVA BBB Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 4,265 € 3,853 € 942
Percentage of debt securities at amortized cost by rating 9.80% 11.10% 2.60%
BBVA BBB minus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 535 € 527 € 4,499
Percentage of debt securities at amortized cost by rating 1.20% 1.50% 12.60%
BBVA BB Plus Rating [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 5,967 € 3,120 € 3,928
Percentage of debt securities at amortized cost by rating 13.70% 9.00% 11.00%
Unclassified [Member]      
Debt securities by rating [Line Items]      
Carrying amount of debt securities at amortized cost € 667 € 587 € 743
Percentage of debt securities at amortized cost by rating 1.50% 1.70% 2.10%