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Stockholders' Equity - Stock-Based Compensation - Additional Information (Details) - USD ($)
12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Apr. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Allocated share-based compensation expenses $ 35,994,000 $ 17,351,000 $ 18,079,000  
Stock Appreciation Rights (SARs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation, number of other than options issued 0      
Tilray 2018 Equity Incentive Plan and Original Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock granted value share based compensation $ 500,000,000      
Stock granted fair value share based compensation $ 1,000,000      
Stock options granted 0 0    
Risk-free interest rate     2.10%  
Expected stock option life     8 years 11 months 19 days  
Expected volatility     61.33%  
Tilray 2018 Equity Incentive Plan and Original Plan | Common Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Shares reserved for future issuance       9,806,851
Common shares reserved for issuance, annual automatic increase percentage 4.00%      
Tilray 2018 Equity Incentive Plan and Original Plan | Stock Appreciation Rights (SARs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation, number of other than options issued 0      
Predecessor Plan | Aphria        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Risk-free interest rate   0.39%    
Expected stock option life   5 years 5 years  
Expected volatility   70.00% 70.00%  
Forfeiture rate   35.00% 20.00%  
Maximum | Tilray 2018 Equity Incentive Plan and Original Plan | Common Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of common stock reserved for issuance, term 10 years      
Maximum | Tilray 2018 Equity Incentive Plan and Original Plan | Stock Appreciation Rights (SARs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation, grant term 10 years      
Maximum | Tilray 2018 Equity Incentive Plan and Original Plan | Restricted Stock Units (RSUs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period 4 years      
Maximum | Predecessor Plan | Aphria        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Risk-free interest rate     1.56%  
Minimum | Tilray 2018 Equity Incentive Plan and Original Plan | Restricted Stock Units (RSUs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period 3 years      
Minimum | Predecessor Plan | Aphria        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Risk-free interest rate     1.20%