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Subsequent event (Details)	May 31, 2022 shares	Jul. 13, 2022	May 30, 2022 shares	May 27, 2022	Mar. 31, 2022 shares	Mar. 30, 2022 shares	Sep. 30, 2021 shares	Jul. 22, 2021 shares	Jul. 21, 2021 shares	Mar. 31, 2021 shares	Mar. 30, 2021 shares	Sep. 12, 2020 shares	Sep. 11, 2020 shares
Subsequent Event [Line Items]
Common Stock, Shares, Outstanding					23,906,985	597,780,383	22,311,215			22,311,215	557,780,383
Common stock, shares issued					23,906,985	597,780,383	22,311,215				557,780,383
Common Stock, Shares Authorized					24,000,000	600,000,000	24,000,000	600,000,000	200,000,000			200,000,000	20,000,000
Share consolidation ratio	0.04
FLS Mushroom
Subsequent Event [Line Items]
% of Ownership					100.00%
Subsequent Event Member
Subsequent Event [Line Items]
Common Stock, Shares, Outstanding	23,911,215		597,780,383
Common stock, shares issued	23,911,215		597,780,383
Common Stock, Shares Authorized	24,000,000		600,000,000
Share consolidation ratio	0.04
Subsequent Event Member | FLS Mushroom
Subsequent Event [Line Items]
% of Ownership				100.00%
Subsequent Event Member | Farmmi Canada
Subsequent Event [Line Items]
% of Ownership		100.00%

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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