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Note 43 - Subsidiaries - Narratives (Details) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2018
Subsidiaries Abstract |  |
Deconsolidation of Subsidiary VWFS | BBVA Francés lost control over the company due to the termination of the two-year term committed by the Bank to provide financing to the company if it would fail to diversify its sources of funding. According to IAS 28, VWFS qualifies as an associate and, as such, it has been deconsolidated effective since the date of loss of control. |
Subsidiary 1 Member |  |
Subsidiries LineItems |  |
Name of Subsidiaries |  | BBVA Francés Valores S.A.
Subsidiary 2 Member |  |
Subsidiries LineItems |  |
Name of Subsidiaries |  | BBVA Francés Asset Management S.A.
Subsidiary 3 Member |  |
Subsidiries LineItems |  |
Name of Subsidiaries |  | Consolidar Administradora de Fondos de Jubilaciones y Pensiones S.A. (undergoing liquidation proceedings)
Subsidiary 4 Member |  |
Subsidiries LineItems |  |
Name of Subsidiaries |  | Volkswagen Financial Services Compañía Financiera S.A. (“VWFS”)

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- Definition The name of a subsidiary. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b_i&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 16 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b_i&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph 12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_12_a&doctype=Standard -URIDate 2018-03-16 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph 19B -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_19B_a&doctype=Standard -URIDate 2018-03-16 + Details
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