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Investments - Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands					12 Months Ended
	Nov. 07, 2019	Nov. 06, 2019	Jun. 14, 2018	Mar. 13, 2018	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Other Net Assets (Liabilities)					$ 111,456	$ 13,434
Maximum Exposure to Loss					$ 31,276	$ 27,585
Cronos Australia | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership interest	31.00%	50.00%			31.00%	31.00%
Other Net Assets (Liabilities)					$ 8,976	$ 10,900
Maximum Exposure to Loss					$ 1,530	$ 1,355
Cronos GrowCo | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership interest			50.00%		50.00%	50.00%
Other Net Assets (Liabilities)					$ 109,329	$ 3,091
Maximum Exposure to Loss					$ 21,125	$ 20,700
MedMen Canada | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership interest				50.00%	50.00%	50.00%
Other Net Assets (Liabilities)					$ 0	$ (199)
Maximum Exposure to Loss					$ 467	$ 642
Natuera | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership interest					50.00%	50.00%
Other Net Assets (Liabilities)					$ (6,849)	$ (358)
Maximum Exposure to Loss					$ 8,154	$ 4,888

X

- Definition

Other Net Assets (Liabilities)

+ References

No definition available.

+ Details

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Namespace Prefix:	cron_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5747-111685

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5728-111685

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121559654&loc=SL6759159-111685

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