General form of registration statement for all companies including face-amount certificate companies

Nature of Business and Significant Accounting Policies (Details) - Schedule of Earnings Per Share, Basic and Diluted

v3.22.1
Nature of Business and Significant Accounting Policies (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended 15 Months Ended
Nov. 30, 2020
Nov. 30, 2021
Nov. 30, 2020
May 31, 2021
May 31, 2020
Nov. 30, 2021
Schedule of Earnings Per Share, Basic and Diluted [Abstract]            
Net income (loss) attributable to CLS Holdings USA, Inc. (in Dollars) $ (849,376) $ 82,127 $ (1,994,412) $ (15,890,514) $ (30,657,973) $ (345,472)
Weighted average number of common shares outstanding 126,548,887 128,071,067 126,535,075 126,664,839 126,390,105 128,158,080
Dilutive effect of shares issuable 0 70,000 0     0
Diluted weighted average number of common shares outstanding 126,548,887 128,141,067 126,535,075 126,664,839 126,390,105 128,158,080
Basic loss per share (in Dollars per share) $ (0.01) $ 0 $ (0.02) $ (0.13) $ (0.24) $ 0
Diluted loss per share (in Dollars per share) $ (0.01) $ 0 $ (0.02) $ (0.13) $ (0.24) $ 0