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Note 32 - Capital Base and Capital Management - Corporate Operations (Details) - 12 months ended Dec. 31, 2017 € in Millions, $ in Millions | EUR (€) | USD ($)
--- | --- | ---
Percentage Of Voting Equity Interests Acquired Line Items |  |
Negative charge in the income statements due to the unrealized losses from its shares in Telefonica | € 1,123 |
First issue of new perpetual securities eventually convertible into shares classified as additional TIER 1 equity instruments | € 500 |
Second issue of new perpetual securities eventually convertible into shares classified as additional TIER 1 equity instruments | $ |  | $ 1,000
Total phased in capital ratio | 15.5% |
CET 1 ratio in BBVA, S.A. | 11.125% |
Decrease in Risk weighted assets | 7% |
Effect of the acquisition of an additional stake in Garanti and the sale of stake in CNCB | negative impact on the ratio of -13 basis points |
Garanti Group |  |
Percentage Of Voting Equity Interests Acquired Line Items |  |
Subordinated Debt | $ |  | $ 750
BBVA, S.A. [Member] |  |
Percentage Of Voting Equity Interests Acquired Line Items |  |
Subordinated Debt | € 1,500 |
Acquisitions [Member] | Garanti Group |  |
Percentage Of Voting Equity Interests Acquired Line Items |  |
Percentage Voting Equity Interests Acquired | 9.95% |
Divestments [Member] | CNCB [Member] |  |
Percentage Of Voting Equity Interests Acquired Line Items |  |
Percentage Voting Equity Interests Acquired | 1.7% |

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