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Note 23 - Liabilities under reinsurance and insurance contracts - Mathematical Reserves (Details) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Matematical Reserves Line Items |  |  |  |
INSURANCE OR REINSURANCE ASSETS |  | € 421 | € 447 | € 511
Spain [Member] | Individual Insurance [Member] |  |  |  |
Matematical Reserves Line Items |  |  |  |
Mortality Table | [1] | GRMF 80-2 GKM 80 / GKMF 95 PERMF 2000 PASEM |  |
Average Technical Interest Type | [1] | 0.26%-3.27% |  |
Spain [Member] | Group Insurance [Member] |  |  |  |
Matematical Reserves Line Items |  |  |  |
Mortality Table | [2] | PERMF 2000 |  |
Average Technical Interest Type | [2] | Depending on the related portfolio |  |
Mexico [Member] | Individual Insurance [Member] |  |  |  |
Matematical Reserves Line Items |  |  |  |
Mortality Table | [1] | Tables of the Comisión Nacional de Seguros y Fianzas 2000-individual |  |
Average Technical Interest Type | [1] | 2.50% |  |
Mexico [Member] | Group Insurance [Member] |  |  |  |
Matematical Reserves Line Items |  |  |  |
Mortality Table | [2] | Tables of the Comisión Nacional de Seguros y Fianzas 2000-grupo |  |
Average Technical Interest Type | [2] | 5.50% |  |
[1] | (1) Provides coverage in the case of one or more of the following events: death and disability.
[2] | (2) Insurance policies purchased by companies (other than Group BBVA entities) on behalf of their employees.

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- Definition The amount of assets under insurance contracts and reinsurance contracts issued. [Refer: Insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 4 -IssueDate 2016-01-13 -Paragraph IG20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2016-03-30&anchor=para_IG20_b&doctype=Implementation%20Guidance -URIDate 2016-03-31 + Details
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