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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 59,074 | € 68,308 | € 58,731
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 | € 2,413 | € 4,345 | € 3,669
Percentage of debt securities by rating | 4.10% | 6.40% | 6.20%
BBVA AA Plus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 586 | € 595 | € 7,279
Percentage of debt securities by rating | 1.00% | 0.90% | 12.40%
BBVA AA Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 646 | € 449 | € 317
Percentage of debt securities by rating | 1.10% | 0.70% | 0.50%
BBVA AA Minus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 327 | € 406 | € 265
Percentage of debt securities by rating | 0.60% | 0.60% | 0.50%
BBVA A plus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 6,179 | € 5,912 | € 3,367
Percentage of debt securities by rating | 10.50% | 8.70% | 5.70%
BBVA A Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 1,676 | € 2,112 | € 12,895
Percentage of debt securities by rating | 2.80% | 3.10% | 22.00%
BBVA A Minus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 18,760 | € 31,614 | € 10,947
Percentage of debt securities by rating | 31.80% | 46.30% | 18.60%
BBVA BBB Plus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 11,465 | € 8,629 | € 9,946
Percentage of debt securities by rating | 19.40% | 12.60% | 16.90%
BBVA BBB Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 10,961 | € 4,054 | € 2,966
Percentage of debt securities by rating | 18.60% | 5.90% | 5.10%
BBVA BBB minus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 1,310 | € 5,116 | € 1,927
Percentage of debt securities by rating | 2.20% | 7.50% | 3.30%
BBVA BB Plus Rating [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 4,379 | € 4,731 | € 4,712
Percentage of debt securities by rating | 7.40% | 6.90% | 8.00%
Unclassified [Member] |  |  |
Avaiable for sale financial assets debt securities by rating [Line Items] |  |  |
Fair value of debt securities by rating | € 372 | € 345 | € 441
Percentage of debt securities by rating | 0.60% | 0.50% | 0.80%

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