XML 127 R104.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Long-term Debt and Other Long-Term Liabilities - Summary of Principal Repayments of Long-term Debt (Parenthetical) (Details) - CAD ($) $ in Thousands | Mar. 31, 2018 | Mar. 31, 2017
--- | --- | ---
Disclosure Of Detailed Information About Borrowings [Line Items] |  |
Other long-term liabilities | $ 61,150 | $ 766
BC Tweed |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |
Put liability | 56,300 |
Vert Mirabel |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |
Put liability | $ 4,850 |

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 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_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherNoncurrentLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=cgc_BCTweedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=cgc_VertMirabelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |