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Note 29 - Treasury Shares Shares Accepted In Pledge and Treasury Stock (Details) - shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Shares Accepted In Pledge Abstract |  |  |
Number Of Shares Accepted In Pledge | 43,018,382 | 61,632,832 | 64,633,003
PercentageShareCapitalOfPledgeShares | 0.65% | 0.92% | 0.97%

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- References No definition available. + Details
Name: | bbva_Numberofsharesacceptedinpledge
Namespace Prefix: | bbva_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | bbva_Percentagesharecapitalofpledgeshares
Namespace Prefix: | bbva_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | bbva_Sharesacceptedinpledgeabstract
Namespace Prefix: | bbva_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration