Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Significant Accounting Policies (Details)

v3.20.4
Nature of Business and Significant Accounting Policies (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 23, 2019
USD ($)
Jun. 24, 2019
USD ($)
Feb. 04, 2019
USD ($)
Jan. 29, 2019
USD ($)
Oct. 31, 2018
USD ($)
Jun. 27, 2018
USD ($)
shares
Feb. 28, 2018
USD ($)
Dec. 04, 2017
USD ($)
Apr. 29, 2015
shares
Dec. 10, 2014
shares
Nov. 12, 2014
shares
Nov. 30, 2020
USD ($)
Nov. 30, 2019
USD ($)
Nov. 30, 2020
USD ($)
shares
Nov. 30, 2019
USD ($)
shares
May 31, 2020
USD ($)
Jun. 01, 2019
USD ($)
May 31, 2019
USD ($)
May 31, 2018
USD ($)
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions (in Shares) | shares                   6,250,000                  
Equity Method Investment, Ownership Percentage                     55.60%                
Stockholders' Equity Note, Stock Split, Conversion Ratio                   0.625                  
Proceeds from Collection of Notes Receivable                           $ 1,385,951 $ 0        
Payments to Acquire Notes Receivable                           0 175,000        
Cash and Cash Equivalents, at Carrying Value                       $ 2,805,516 $ 4,937,013 2,805,516 4,937,013 $ 2,925,568   $ 10,525,791  
Accounts Receivable, Credit Loss Expense (Reversal)                       0 0 5,992 0        
Goodwill, Impairment Loss                               25,185,003      
Goodwill           $ 25,742,899           557,896   557,896   557,896      
Advertising Expense                       311,707 218,041 443,739 424,019        
Research and Development Expense                       5,385 $ 0 $ 12,392 $ 0        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           88,474,321 86,932,861        
Operating Lease, Right-of-Use Asset                       1,227,702   $ 1,227,702   1,403,429 $ 2,703,821    
Operating Lease, Liability                       1,265,642   $ 1,265,642     $ 2,675,310 2,675,310  
Warrant [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           54,835,145 54,835,145        
Equity Unit Purchase Agreements [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           7,676,974 7,676,974        
Convertible Debt Securities [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           25,454,696 24,184,074        
Stock Payable [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           507,506 236,668        
Principal [Member] | Notes Receivable [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable                           $ 2,743,229          
Accrued Interest [Member] | Notes Receivable [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable                           181,771          
Reverse Merger with CLS Labs [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Stock Issued During Period, Shares, New Issues (in Shares) | shares                 15,000,000                    
Oasis Acquisition [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross           2,050,000 $ 6,200,000                        
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions             10.00%                        
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
Goodwill, Impairment Loss                               25,185,003      
Goodwill           25,742,899                   $ 557,896   $ 25,742,899  
Oasis Acquisition [Member] | Oasis LLCs [Member]                                      
Nature of Business and Significant Accounting Policies (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                          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares           22,058,823                          
Oasis Acquisition [Member] | Deposit [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross               $ 250,000                      
Oasis Acquisition [Member] | Additional Payments [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross             $ 1,800,000 $ 1,800,000                      
In Good Health [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross         $ 35,000,000                            
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                            
Debt Instrument, Interest Rate, Stated Percentage         6.00%                            
Interest Rate, Default         15.00%                            
Proceeds from Collection of Notes Receivable                       750,000   1,500,000          
Financing Receivable, after Allowance for Credit Loss                       2,656,224   2,656,224          
CannAssist LLC [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Equity Method Investment, Ownership Percentage       80.00%                              
Debt Instrument, Face Amount       $ 500,000                              
Debt Instrument, Interest Rate, Stated Percentage       8.00%                              
Proceeds from Collection of Notes Receivable $ 342,567                                    
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.                              
Payments to Acquire Notes Receivable   $ 175,000 $ 150,000                                
Financing Receivable, after Allowance for Credit Loss                       $ 0   $ 0          
CannAssist LLC [Member] | Principal [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable 325,000                                    
CannAssist LLC [Member] | Accrued Interest [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable $ 17,567                                    
Oasis LLCs [Member] | Oasis Acquisition [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross           $ 5,995,543                          
Debt Instrument, Face Amount           $ 4,000,000                          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares           22,058,823                          
CLS Labs, Inc. [Member] | Shares of CLS Holdings USA, Inc. [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions (in Shares) | shares                     10,000,000