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Note 23 Mathematical reserves (Details) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
6311 Life Insurance [Member] | SPAIN |  |  |  |
Mathematical reserves [Line Items] |  |  |  |
Mortality tables | [1] | GRMF 80-2, GKM 80 / GKMF 95, PASEM,GKMF 80/95,PERFM 2000 | GRMF 80-2, GKM 80 / GKMF 95, PASEM,GKMF 80/95,PERFM 2000 | GRMF 80-2, GKM 80 / GKMF 95, PASEM,GKMF 80/95,PERFM 2000
Average technical interest type | [1] | 0.25%- 2.85% | 0.24%- 2.85 | 0.25%- 2.87%
6311 Life Insurance [Member] | MEXICO |  |  |  |
Mathematical reserves [Line Items] |  |  |  |
Mortality tables | [1] | Tables of the Comisión Nacional de Seguros y Fianzas 2000-individualTable of CNSF M 2013 | Tables of the Comisión Nacional de Seguros y Fianzas 2000-individual | Tables of the Comisión Nacional de Seguros y Fianzas 2000-individual
Average technical interest type | [1] | 4.30 | 3.60 | 2.50
Group insurance [Member] | SPAIN |  |  |  |
Mathematical reserves [Line Items] |  |  |  |
Mortality tables | [2] | PERFM 2000 | PERFM 2000 | PERFM 2000
Average technical interest type | [2] | Depending on the related portfolio | Depending on the related portfolio | Depending on the related portfolio
Group insurance [Member] | MEXICO |  |  |  |
Mathematical reserves [Line Items] |  |  |  |
Mortality tables | [2] | Tables of the Comisión Nacional de Seguros y Fianzas 2000-grupo | Tables of the Comisión Nacional de Seguros y Fianzas 2000-grupo | Tables of the Comisión Nacional de Seguros y Fianzas 2000-grupo
Average technical interest type | [2] | 5.50 | 5.50 | 5.50
[1] | (1) Provides coverage in the case of one or more of the following events: death, disability and / or serious illness.
[2] | (2) Insurance policies purchased by companies (other than BBVA Group entities) on behalf of their employees.

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