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Commitments and Contingencies - Additional Information (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Commitments And Contingencies [Abstract]
Accrued financial penalties payable	$ 1.5	$ 1.5

X

- Definition

Accrued financial penalties payable.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Disclosure of commitments and contingencies.

+ References

No definition available.

+ Details

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Namespace Prefix:	sndl_
Data Type:	xbrli:stringItemType
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