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Note 22 - Financial liabilities at amortized cost - Amortization Preferred securities by issuer (Details) | Apr. 18, 2017 USD ($) | Mar. 22, 2017 EUR (€) | Mar. 20, 2017 EUR (€)
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Preferred Stock Member [Member] | BBVA International Preferred S.A.U. |  |  |
Preferred Securities Amortised Line Items |  |  |
Amount Amortised Preferred Debt Securities | $ 600,000,000 | € 85,550,000 | € 164,350,000

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