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Share Capital - Additional Information (Details)	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Number of equity financings	0	0

X

- Definition

Number of equity financings.

+ References

No definition available.

+ Details

Name:	cgc_NumberOfEquityFinancing
Namespace Prefix:	cgc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration