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OTHER RECEIVABLES - Allowance for Impairment of tax Credits (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract] |  |  |
Balance at beginning of year | $ 675 | $ 1,300 | $ 0
Additions | (47) | 48 | 1,586
Foreign exchange | (250) | (673) | (286)
Balance at end of year | $ 378 | $ 675 | $ 1,300

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- Definition Allowance For Impairment Of Tax Credits, Balance + References No definition available. + Details
Name: | glob_AllowanceForImpairmentOfTaxCreditsBalance
Namespace Prefix: | glob_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Allowance For Impairment Of Tax Credits, Recoveries + References No definition available. + Details
Name: | glob_AllowanceForImpairmentOfTaxCreditsRecoveries
Namespace Prefix: | glob_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Allowance For Impairment Of Tax Credits, Translation + References No definition available. + Details
Name: | glob_AllowanceForImpairmentOfTaxCreditsTranslation
Namespace Prefix: | glob_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration