Investment in non convertible instrument.

No definition available.

Name:	gtbif_InvestmentInNonConvertibleInstrument
Namespace Prefix:	gtbif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Investments.

+ References

No definition available.

+ Details

Name:	gtbif_InvestmentsLineItems
Namespace Prefix:	gtbif_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Proceeds from sale of equity interest in privately held entity.

+ References

No definition available.

+ Details

Name:	gtbif_ProceedsFromSaleOfEquityInterestInPrivatelyHeldEntity
Namespace Prefix:	gtbif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Unrealized gain loss on variable notes receivables.

+ References

No definition available.

+ Details

Name:	gtbif_UnrealizedGainLossOnVariableNotesReceivables
Namespace Prefix:	gtbif_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of the entity's equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_EquityFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(7)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(9)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of realized gain (loss) on investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

+ Details

Name:	us-gaap_RealizedInvestmentGainsLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of unrealized gain (loss) on investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_UnrealizedGainLossOnInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=gtbif_CannabisCompaniesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_NotesReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2019	Dec. 31, 2017
Investments [Line Items]
Unrealized gains and (losses) recognized on equity investments held	$ 660	$ 137	$ 350	$ 13,825
Fair value adjustments on equity method investments	0	0	0	(14,119)
Fair value gains (losses) on investments	775		153
Fair value of losses on equity method of investment	724		410
Investment in non convertible instrument	$ 22,214		$ 22,214		$ 22,214
Debt instrument interest rate	5.00%		5.00%		9.50%	7.00%	2.17%
Cannabis Companies [Member]
Investments [Line Items]
Equity interest, fair value disclosure	$ 77,335		$ 77,335		$ 74,169
Fair Value, Inputs, Level 1 [member]
Investments [Line Items]
Equity interest, fair value disclosure	2,094		2,094		2,535
Proceeds from sale of equity interest in privately held entity			31	2,393
Unrealized gains and (losses) recognized on equity investments held		124		14,169
Fair value adjustments on equity method investments	0	(418)	0	(236)
Fair Value, Inputs, Level 3 [member]
Investments [Line Items]
Equity interest, fair value disclosure	42,330		42,330		40,330
Fair value adjustments on equity method investments	0	0	0	(3,145)
Fair value gains (losses) on investments	0	(295)	0	182
Notes Receivable [Member]
Investments [Line Items]
Fair value gains (losses) on investments	$ 51		$ 257
Notes Receivable [Member] \| Fair Value, Inputs, Level 1 [member]
Investments [Line Items]
Debt instrument interest rate	13.00%		13.00%
Notes Receivable [Member] \| Fair Value, Inputs, Level 3 [member]
Investments [Line Items]
Fair value gains (losses) on investments	$ 51	$ 185	$ 257	$ 479
Investment in non convertible instrument	$ 10,697		$ 10,697		$ 9,090
Debt instrument interest rate	0.91%		0.91%
Minimum [Member] \| Notes Receivable [Member] \| Fair Value, Inputs, Level 3 [member]
Investments [Line Items]
Debt instrument, Term			9 months
Maximum [Member] \| Notes Receivable [Member] \| Fair Value, Inputs, Level 3 [member]
Investments [Line Items]
Debt instrument interest rate	10.00%		10.00%
Debt instrument, Term			5 years