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Note 3 - Functional and Presentation Currency and Unit of Account - Profit Inflation Adjustment (Details) | Dec. 31, 2017 ARS ($)
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Profit Inflation Adjustment Abstract |
Profit or Loss Before Inflation Adjustment | $ 5,431,446,000
Impact of IAS 29 Adoption Abstract |
Increase in Non-monetary Assets in Profit or Loss (Tangible Assets, Intangible Assets and Non-current Assets Held for Sale) | 1,981,754,000
Increase Deferred Income Tax in the Profit or Loss | (548,807,000)
Loss on Net Monetary Position in Profit or Loss | (5,604,951,000)
Total Impact of IAS 29 Adoption in the Profit or Loss | (4,172,004,000)
Profit or Loss in Terms of the Measuring Unit Current at December 31, 2017 | 1,259,442,000
Adjustment of Measuring Unit in Profit or Loss | 600,069,000
Profit or Loss in Terms of the Measuring Unit Current at December 31, 2018 | $ 1,859,511,000

X
- Definition The amount of adjustment of measuring unit application with IAS 29. + References No definition available. + Details
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Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
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Namespace Prefix: | bfr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of impact of IAS 29 in increase in deferred income tax. + References No definition available. + Details
Name: | bfr_Increasedeferredincometaxinprofitorloss
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of impact of IAS 29 in increase in non-monetary assets (tangible assets, intangible assets and non-current assets held for sale). + References No definition available. + Details
Name: | bfr_Increaseinnonmonetaryassetsinprofitorloss
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition The amount of impact of IAS 29 in loss of net monetary position. + References No definition available. + Details
Name: | bfr_Lossonnetmonetaryposition
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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X
- References No definition available. + Details
Name: | bfr_Profitinflationadjustmentabstract
Namespace Prefix: | bfr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of profit or loss before inflation adjustment in accordance of IAS 29. + References No definition available. + Details
Name: | bfr_Profitorlossbeforeinflationadjustment
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of profit or loss in terms of the measuring unit current at year-end after IAS 29 application. + References No definition available. + Details
Name: | bfr_Profitorlossintermsofthemeasuringunitcurrentat2017
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition The amount of profit or loss in terms of the measuring unit current at year-end after IAS 29 application. + References No definition available. + Details
Name: | bfr_Profitorlossintermsofthemeasuringunitcurrentat2018
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition The amount of total impact adoption of IAS 29 in profit or loss. + References No definition available. + Details
Name: | bfr_Totalimpactofias29adoptioninprofitorloss
Namespace Prefix: | bfr_
Data Type: | xbrli:monetaryItemType
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