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Note 36 - Transactions on behalf of third parties (Details) - EUR (€) € in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Transactions on behalf of third parties |  |  |
Financial instruments entrusted by third parties | € 624,822 | € 637,761 | € 664,911
Conditional bills and other securities received for collection | 14,775 | 16,054 | 15,064
Securities lending | 5,485 | 3,968 | 4,125
Total transactions with third parties | € 645,081 | € 657,783 | € 684,100

X
- Definition The amount of finacial instrumens that the Entity holds for payment for a fee belonging to a third party. + References No definition available. + Details
Name: | bbva_Conditionalbillsandothersecuritiesreceivedforcollection
Namespace Prefix: | bbva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of finacial instrumens trusted by third parties for which the Entity operates. + References No definition available. + Details
Name: | bbva_Financialinstrumentsentrustedbythirdparties
Namespace Prefix: | bbva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of finacial instrumens that the Entity has received in a loan but belongs to a third party. + References No definition available. + Details
Name: | bbva_Securitieslending
Namespace Prefix: | bbva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | bbva_Totaltransactionsthirdparties
Namespace Prefix: | bbva_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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