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Loss Per Share - Summary of Loss Per Share (Details) - CAD ($) $ / shares in Units, $ in Thousands	10 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Weighted average shares outstanding (000s)
Basic and dilutive	69,203	218,645	85,750
Continuing operations
Net loss attributable to Sundial Growers Inc.	$ (56,526)	$ (206,056)	$ (142,533)
Per share - basic and diluted	$ (0.82)	$ (0.95)	$ (1.67)
Discontinued operations
Net loss from discontinued operations		$ (33,627)	$ (128,931)
Per share - basic and diluted		$ (0.15)	$ (1.50)
Net loss attributable to Sundial Growers Inc.	$ (56,526)	$ (239,683)	$ (271,464)
Per share - basic and diluted	$ (0.82)	$ (1.10)	$ (3.17)

X

- Definition

The amount of earnings per share when the basic and diluted measurements are equal. [Refer: Basic earnings (loss) per share; Diluted earnings (loss) per share]

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Basic and diluted earnings (loss) per share from continuing operations. [Refer: Basic and diluted earnings (loss) per share]

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Basic and diluted earnings (loss) per share from discontinued operations. [Refer: Basic and diluted earnings (loss) per share]

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The profit (loss) from discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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Net loss and net loss per share from continuing operations.

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