CLS Holdings USA, Inc. Annual report pursuant to Section 13 and 15(d)

NOTE 9 - RELATED PARTY TRANSACTIONS (Details) - Schedule of Debt Conversions

NOTE 9 - RELATED PARTY TRANSACTIONS (Details) - Schedule of Debt Conversions - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2017	May 31, 2017	May 31, 2016
Debt Conversion [Line Items]
Shares issued for conversion of debt (in Shares)	(10,816,960)	(10,816,960)
Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		$ 2,704,240	$ 0
Shares issued for conversion of debt (in Shares)		(10,816,960)
Chief Executive Officer [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Shares issued for conversion of debt (in Shares)		(1,848,708)
Director [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Shares issued for conversion of debt (in Shares)		(6,460,276)
Affiliated Entity [Member] \| Related Party Debt [Member] \| Newcan Investment Partners, LLC [Member]
Debt Conversion [Line Items]
Shares issued for conversion of debt (in Shares)		(1,870,988)
Affiliated Entity [Member] \| Related Party Debt [Member] \| CLS Co 2016 LLC [Member]
Debt Conversion [Line Items]
Shares issued for conversion of debt (in Shares)		(636,988)
Principal [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount	$ 2,537,750	$ 2,537,750
Principal [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		2,537,750
Principal [Member] \| Chief Executive Officer [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		442,750
Principal [Member] \| Director [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		1,485,000
Principal [Member] \| Affiliated Entity [Member] \| Related Party Debt [Member] \| Newcan Investment Partners, LLC [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		460,000
Principal [Member] \| Affiliated Entity [Member] \| Related Party Debt [Member] \| CLS Co 2016 LLC [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		150,000
Accrued Interest [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount	$ 166,490	166,490
Accrued Interest [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		166,490
Accrued Interest [Member] \| Chief Executive Officer [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		19,427
Accrued Interest [Member] \| Director [Member] \| Related Party Debt [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		130,069
Accrued Interest [Member] \| Affiliated Entity [Member] \| Related Party Debt [Member] \| Newcan Investment Partners, LLC [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		7,747
Accrued Interest [Member] \| Affiliated Entity [Member] \| Related Party Debt [Member] \| CLS Co 2016 LLC [Member]
Debt Conversion [Line Items]
Debt Conversion, Original Debt, Amount		$ 9,247