XML 112 R89.htm IDEA: XBRL DOCUMENT v3.8.0.1

Joint Operations - Additional Information (Details) $ in Thousands, ft² in Millions		12 Months Ended
	Oct. 10, 2017 CAD ($) ft² a	Mar. 31, 2018 CAD ($) shares	Mar. 31, 2017 CAD ($)
Disclosure Of Joint Operations [Line Items]
Name of joint operation	BC Tweed Joint Venture Inc.
Share capital		$ 1,076,838	$ 621,541
BC Tweed
Disclosure Of Joint Operations [Line Items]
Ownership interest in joint operation	66.67%
Ownership percentage held by partner	33.33%
Fair value of put option estimated using discounted cash flow approach		36,400
Put liability		56,300
Changes in fair value of put liability		19,900
Cash commitments to joint venture		20,000
Cash advanced to joint venture	$ 1,000	$ 79,879
Preferred dividend rate		24.00%
Adjustment to Prime Rate for Borrowings		3.00%
Percentage of cannabis produced for a fixed price per gram		100.00%
Grant date fair value of share-based compensation		$ 6,731
Contribution to loss		19,907
Acquisition-related transaction costs		641
BC Tweed | BC Lease 1
Disclosure Of Joint Operations [Line Items]
Purchase Price for Acquiring Limited Partnership Units		$ 28,000
BC Tweed | BC Lease 1 | License Date
Disclosure Of Joint Operations [Line Items]
Percentage of increase in purchase price		3.00%
BC Tweed | BC Lease 1 | Fifth Anniversary
Disclosure Of Joint Operations [Line Items]
Percentage of increase in purchase price		8.00%
BC Tweed | BC Lease 2
Disclosure Of Joint Operations [Line Items]
Purchase Price for Acquiring Limited Partnership Units		$ 45,000
BC Tweed | BC Lease 2 | License Date
Disclosure Of Joint Operations [Line Items]
Percentage of increase in purchase price		3.00%
BC Tweed | BC Lease 2 | Fifth Anniversary
Disclosure Of Joint Operations [Line Items]
Percentage of increase in purchase price		8.00%
BC Tweed | Two Tranches
Disclosure Of Joint Operations [Line Items]
Number of shares to be issued | shares		310,316
BC Tweed | Additional Two Tranches
Disclosure Of Joint Operations [Line Items]
Share capital		$ 2,750
BC Tweed | BC Tweed
Disclosure Of Joint Operations [Line Items]
Share-based compensation expense		$ 5,001
BC Tweed | Partner | British Columbia
Disclosure Of Joint Operations [Line Items]
Area of land | a	55
BC Tweed | Partner | British Columbia | BC Lease 1
Disclosure Of Joint Operations [Line Items]
Area of greenhouse | ft²	1.3
BC Tweed | Partner | British Columbia | BC Lease 2
Disclosure Of Joint Operations [Line Items]
Area of greenhouse | ft²	1.7

X

- Definition

Area of green house facility.

+ References

No definition available.

+ Details

Name:	cgc_AreaOfGreenHouse
Namespace Prefix:	cgc_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The commitments that the entity has relating to its joint operation.

+ References

No definition available.

+ Details

Name:	cgc_CommitmentsInRelationToJoinOperation
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The percentage of output attributable from the Joint Operation.

+ References

No definition available.

+ Details

Name:	cgc_CompanysProportionateShareOfJointOperationOutput
Namespace Prefix:	cgc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Dividends percentage on preferred stock.

+ References

No definition available.

+ Details

Name:	cgc_DividendsPercentageOnPreferredStock
Namespace Prefix:	cgc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value changes on put liability.

+ References

No definition available.

+ Details

Name:	cgc_FairValueChangesOnPutLiability
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value of put liability estimated using discounted cash flow approach.

+ References

No definition available.

+ Details

Name:	cgc_FairValueOfPutLiabilityEstimatedUsingDiscountedCashFlowApproach
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Grant date fair value of share based compensation.

+ References

No definition available.

+ Details

Name:	cgc_GrantDateFairValueOfShareBasedCompensation
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Joint operation contribution to loss.

+ References

No definition available.

+ Details

Name:	cgc_JointOperationContributionToLoss
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Percentage of increase in purchase price.

+ References

No definition available.

+ Details

Name:	cgc_PercentageOfIncreaseInPurchasePrice
Namespace Prefix:	cgc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The proportion of ownership in the Joint Operation held by the counter-party joint operator.

+ References

No definition available.

+ Details

Name:	cgc_ProportionOfOwnershipInterestsHeldByJointOperationCounterparty
Namespace Prefix:	cgc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Purchase price for acquiring limited partnership units.

+ References

No definition available.

+ Details

Name:	cgc_PurchasePriceForAcquiringLimitedPartnershipUnits
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Put liability.

+ References

No definition available.

+ Details

Name:	cgc_PutLiability
Namespace Prefix:	cgc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of acquisition-related costs for transactions recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2017-01-01
-Paragraph B64
-Subparagraph m
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_m&doctype=Appendix&seq=2
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The area of land used for agriculture by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 41
-IssueDate 2017-01-01
-Paragraph 46
-Subparagraph b
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=41&date=2017-03-01&anchor=para_46_b_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_AreaOfLandUsedForAgriculture
Namespace Prefix:	ifrs-full_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_7&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_BorrowingsAdjustmentToInterestRateBasis
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow for loans and advances made to related parties. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_16&doctype=Standard
-URIDate 2017-03-09

+ Details

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

X

- Definition

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

+ References

No definition available.

+ Details

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

X

- Definition

The amount of expense from share-based payment transactions with employees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The nominal value of capital issued.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_e&doctype=Standard
-URIDate 2017-03-09

+ Details

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

X

- Definition

The name of a joint operation. [Refer: Joint operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_21_a_i&doctype=Standard
-URIDate 2017-03-09

+ Details

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

X

- Definition

The number of shares authorised.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 79
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_NumberOfSharesAuthorised
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_21_a_iv&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_JointVenturesAxis=cgc_BCTweedJointVentureIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cgc_BCLeaseOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=cgc_LicenseDateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=cgc_FifthAnniversaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cgc_BCLeaseTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=cgc_TwoTranchesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=cgc_AdditionalTwoTranchesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=cgc_BCTweedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=cgc_PartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=cgc_BritishColumbiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ArrangementsInvolvingLegalFormOfLeaseAxis=cgc_BCLeaseOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ArrangementsInvolvingLegalFormOfLeaseAxis=cgc_BCLeaseTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: