INCOME TAXES - Deferred Tax Asset/Liability Presented in Financial Position (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	$ 16,916	$ 13,186
Deferred tax expense (income) recognised in profit or loss	3,939	6,551
Deferred tax recognised in other comprehensive income	(698)	(165)
Deferred tax relating to items credited (charged) directly to equity	9,864	2,367
Increase (decrease) in deferred tax liability (asset)	(3,726)	(5,023)
Increase (decrease) through business combinations, deferred tax liability (asset)	(455)
Closing Balance - Deferred tax liability (asset)	25,840	16,916
Foreign exchange loss, DTA	371	905
Share-based compensation plan
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	4,731	5,772
Deferred tax expense (income) recognised in profit or loss	718	915
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	9,864	2,367
Increase (decrease) in deferred tax liability (asset)	(3,726)	(4,323)
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	11,587	4,731
Provision for vacation and bonus
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	6,624	1,309
Deferred tax expense (income) recognised in profit or loss	(275)	5,315
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	184
Closing Balance - Deferred tax liability (asset)	6,533	6,624
Intercompany trade payables
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	2,207	3,126
Deferred tax expense (income) recognised in profit or loss	1,346	(919)
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	3,553	2,207
Property and equipment
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	716	756
Deferred tax expense (income) recognised in profit or loss	447	(40)
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	1,163	716
Goodwill
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	(1,005)	(479)
Deferred tax expense (income) recognised in profit or loss	(747)	(526)
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	(1,752)	(1,005)
Contingencies
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	546	0
Deferred tax expense (income) recognised in profit or loss	168	546
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	714	546
Other assets
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	0
Deferred tax expense (income) recognised in profit or loss	(389)
Deferred tax recognised in other comprehensive income	0
Deferred tax relating to items credited (charged) directly to equity	0
Increase (decrease) in deferred tax liability (asset)	0
Increase (decrease) through business combinations, deferred tax liability (asset)	(639)
Closing Balance - Deferred tax liability (asset)	(1,028)	0
Others
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	1,236	297
Deferred tax expense (income) recognised in profit or loss	1,795	939
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	0
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	3,031	1,236
Subtotal
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	15,055	10,781
Deferred tax expense (income) recognised in profit or loss	3,063	6,230
Deferred tax recognised in other comprehensive income	0	0
Deferred tax relating to items credited (charged) directly to equity	9,864	2,367
Increase (decrease) in deferred tax liability (asset)	(3,726)	(4,323)
Increase (decrease) through business combinations, deferred tax liability (asset)	(455)
Closing Balance - Deferred tax liability (asset)	23,801	15,055
Loss Carryforward
Reconciliation of changes in deferred tax liability (asset) [abstract]
Opening Balance - Deferred tax liability (asset)	1,861	2,405
Deferred tax expense (income) recognised in profit or loss	876	321
Deferred tax recognised in other comprehensive income	(698)	(165)
Deferred tax relating to items credited (charged) directly to equity	0	0
Increase (decrease) in deferred tax liability (asset)	0	(700)
Increase (decrease) through business combinations, deferred tax liability (asset)	0
Closing Balance - Deferred tax liability (asset)	$ 2,039	$ 1,861

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_i&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_DeferredTaxLiabilityAsset
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of deferred tax related to items credited (charged) directly to equity. [Refer: Deferred tax expense (income)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_a&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph ab
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_ab&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 90
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_90&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) in a deferred tax liability (asset). [Refer: Deferred tax liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInDeferredTaxLiabilityAsset
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax liability (asset) resulting from business combinations. [Refer: Deferred tax liability (asset)]

+ References

+ Details

Name:	ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

+ Details

Name:	ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_ShareBasedCompensationPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_ProvisionforVacationandBonusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_IntercompanyTradePayablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_PropertyandEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ifrs-full_GoodwillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_AllowancesAndProvisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ifrs-full_OtherAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ifrs-full_OtherTemporaryDifferencesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_SubtotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=glob_LossCarryforwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: