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

Annual report pursuant to Section 13 and 15(d)

BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details)

BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details)	Jan. 29, 2019 USD ($)	Oct. 31, 2018 USD ($)	Jun. 27, 2018 USD ($) shares	Feb. 28, 2018 USD ($) shares	Dec. 04, 2017 USD ($)	Apr. 29, 2015 shares	Dec. 10, 2014 shares	Nov. 12, 2014 shares	May 31, 2019 USD ($)	Mar. 11, 2019	May 31, 2018 USD ($)
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Stockholders' Equity Note, Stock Split, Conversion Ratio							0.625
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions				10.00%
Reverse Merger with CLS Labs [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares) \| shares						15,000,000
Oasis Acquisition [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Payments to Acquire Businesses, Gross			$ 2,050,000	$ 6,200,000
Liabilities Assumed			204,457	$ 204,457
Business Combination, Consideration Transferred			27,975,650
Business Combination, Consideration Transferred, Liabilities Incurred			3,810,820
Business Combination, Contingent Consideration, Liability									$ 1,000,000		$ 678,111
In Good Health [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Equity Method Investment, Ownership Percentage										80.00%
Payments to Acquire Businesses, Gross		$ 35,000,000
Debt Instrument, Face Amount	$ 500,000
Line of Credit Facility, Description	Any draws on the line of credit in excess of $150,000 will only be made in the sole discretion of the Company
Debt Instrument, Interest Rate, Stated Percentage	8.00%
Business Combination, Consideration Transferred		47,500,000
Business Combination, Consideration Transferred, Liabilities Incurred		7,500,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		5,000,000
Business Combination, Contingent Consideration, Liability		$ 2,500,000
Oasis LLCs [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) \| shares				22,058,823
Oasis LLCs [Member] \| Oasis Acquisition [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Payments to Acquire Businesses, Gross			$ 5,995,543
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			90.00%
Debt Instrument, Face Amount			$ 4,000,000	$ 4,000,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) \| shares			22,058,823
Deposit [Member] \| Oasis Acquisition [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Payments to Acquire Businesses, Gross					$ 250,000
Additional Payments [Member] \| Oasis Acquisition [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Payments to Acquire Businesses, Gross				$ 1,800,000	$ 1,800,000
CLS Labs, Inc. [Member] \| Shares of CLS Holdings USA, Inc. [Member]
BUSINESS ORGANIZATION AND NATURE OF OPERATIONS (Details) [Line Items]
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions (in Shares) \| shares							6,250,000	10,000,000
Equity Method Investment, Ownership Percentage								55.60%