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Note 40 - Financial Instruments Risks - Sensitivity of the Financial Margin SFM (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
SensitivityOfTheFinancialMarginGivenAVariationOf100BasisPointsInProjectedMarginAbstract |  |  |
Closing SFM | 2.14% | 2.18% | 0.03%
Minimum SFM | 1.98% | 0.03% | 0.02%
Maximum SFM | 2.73% | 2.18% | 0.37%
Average SFM | 2.26% | 0.34% | 0.17%

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- Definition Average SFM given a variation of 100 basis points in relation to the 12 month projected margin. + References No definition available. + Details
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- Definition Closing SFM given a variation of 100 basis points in relation to the 12 month projected margin. + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
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- Definition Maximum SFM given a variation of 100 basis points in relation to the 12 month projected margin. + References No definition available. + Details
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- Definition Minimum SFM given a variation of 100 basis points in relation to the 12 month projected margin. + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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