Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments - Fair Value Measurement Inputs (Details)

v3.22.1
Fair Value of Financial Instruments - Fair Value Measurement Inputs (Details)
$ / shares in Units, $ in Millions
Feb. 28, 2022
CAD ($)
$ / shares
shares
Feb. 28, 2021
$ / shares
Jun. 27, 2019
$ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Common shares to be repurchased for cancellation under share repurchase credit feature (in shares) | shares 27,378,866    
Tranche B Warrants and Tranche C Warrants | Maximum      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Dollar value of common shares to be repurchased for cancellation under share repurchase credit feature | $ $ 1,583.0    
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Exercise price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input (in CAD per share) $ 50.40 $ 50.40 $ 50.40
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Valuation date stock price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input (in CAD per share) $ 9.04 $ 41.90 $ 53.36
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Remaining term      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, term 1 year 8 months 12 days 2 years 8 months 12 days 4 years 3 months 18 days
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Expected volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.750 0.700 0.667
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Risk-free interest rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.014 0.005 0.014
Significant Other Observable Inputs (Level 2) | Warrants | Tranche A Warrants | Expected dividend yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.000 0.000 0.000
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Exercise price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input (in CAD per share) $ 76.68 $ 76.68 $ 76.68
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Valuation date stock price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input (in CAD per share) $ 9.04 $ 41.90 $ 53.36
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Remaining term      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, term 4 years 8 months 12 days 5 years 8 months 12 days 7 years 3 months 18 days
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Expected volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.750 0.700 0.667
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Risk-free interest rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.017 0.011 0.014
Significant Other Observable Inputs (Level 2) | Warrants | Tranche B Warrants | Expected dividend yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Warrants outstanding, measurement input, decimal 0.000 0.000 0.000
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Conversion price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt instrument, measurement input (in CAD per share) $ 48.17 $ 48.17  
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Valuation date stock price      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt instrument, measurement input (in CAD per share) $ 9.04 $ 41.90  
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Remaining term      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Weighted average remaining term 1 year 4 months 24 days 2 years 4 months 24 days  
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Expected volatility      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt instrument, measurement input, decimal 0.750 0.576  
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Risk-free interest rate      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt instrument, measurement input, decimal 0.014 0.004  
Significant Other Observable Inputs (Level 2) | Convertible debt securities | Expected dividend yield      
Fair Value Measurement Inputs and Valuation Techniques [Line Items]      
Debt instrument, measurement input, decimal 0.000 0.000