Number of warrants or rights exercisable.

No definition available.

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Balance Type:	na
Period Type:	instant

- Definition

Issuance date of outstanding warrants and rights.

+ References

No definition available.

+ Details

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Namespace Prefix:	nept_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=nept_SeriesAWarrantsMember
Namespace Prefix:
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- Details

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Liability Related to Warrants - Summary of Outstanding Warrants (Details) - $ / shares	12 Months Ended
	Mar. 31, 2022	Mar. 14, 2022	Mar. 31, 2021	Feb. 19, 2021	Oct. 22, 2020
Class Of Warrant Or Right [Line Items]
Number of warrants outstanding	1,925,929		497,355
Number of warrants exercisable	497,355
Exercise price	$ 28.64
2020 Warrants
Class Of Warrant Or Right [Line Items]
Date of issuance	Oct. 22, 2020
Number of warrants outstanding	300,926
Number of warrants exercisable	300,926
Exercise price	$ 78.75				$ 78.75
Expiry date	Oct. 22, 2025				Oct. 22, 2025
2021 Warrants
Class Of Warrant Or Right [Line Items]
Date of issuance	Feb. 19, 2021
Number of warrants outstanding	196,429
Number of warrants exercisable	196,429
Exercise price	$ 78.75			$ 78.75
Expiry date	Aug. 19, 2026			Aug. 19, 2026
Series A Warrants
Class Of Warrant Or Right [Line Items]
Date of issuance	Mar. 14, 2022
Number of warrants outstanding	714,287
Exercise price	$ 11.20	$ 11.20
Expiry date	Sep. 14, 2027
Series B Warrants
Class Of Warrant Or Right [Line Items]
Date of issuance	Mar. 14, 2022
Number of warrants outstanding	714,287
Exercise price	$ 11.20	$ 11.20
Expiry date	Mar. 14, 2028