Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments - Recurring Basis Measurements (Details)

v3.22.1
Fair Value of Financial Instruments - Recurring Basis Measurements (Details)
$ / shares in Units, shares in Millions, $ in Millions, $ in Millions
 12 Months Ended
Feb. 28, 2022
USD ($)
May 01, 2020
USD ($)
May 01, 2020
CAD ($)
$ / shares
shares
Feb. 28, 2022
USD ($)
Feb. 28, 2021
USD ($)
Feb. 29, 2020
USD ($)
Fair Value, Net Asset (Liability) [Abstract]            
Debt securities $ 191.4     $ 191.4 $ 1,818.1  
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Unrealized net gain (loss) on securities measured at fair value       (1,644.7) 802.0 $ (2,126.4)
Payments to acquire investments 3,044.3          
May 2020 Canopy Investment            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Payments to acquire investments 173.9          
Equity securities | May 2020 Canopy Investment            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Payments to acquire investments   $ 173.9 $ 245.0      
Convertible debt securities            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Unrealized net gain (loss) on securities measured at fair value       (41.3) 40.5  
Warrants | November 2017 Canopy Warrants            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Unrealized net gain (loss) on securities measured at fair value       0.0 (61.8)  
Warrants | November 2018 Canopy Warrants            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Unrealized net gain (loss) on securities measured at fair value       (1,603.4) 823.3  
Warrants | May 2020 Canopy Investment            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Exercise price of warrants (in CAD per share) | $ / shares     $ 12.98      
Common Stock | May 2020 Canopy Investment            
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]            
Equity method investment, number of common shares acquired (in shares) | shares     18.9      
Recurring | Foreign currency contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 56.4     56.4 76.6  
Derivative liability 17.8     17.8 9.7  
Recurring | Commodity derivative contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 91.0     91.0 21.2  
Derivative liability 0.9     0.9 5.3  
Recurring | Equity securities            
Fair Value, Net Asset (Liability) [Abstract]            
Equity securities 36.3     36.3 1,639.7  
Recurring | Convertible debt securities            
Fair Value, Net Asset (Liability) [Abstract]            
Debt securities 146.6     146.6 176.3  
Recurring | Swap lock contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative liability 0.4     0.4    
Recurring | Quoted Prices in Active Markets (Level 1) | Foreign currency contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 0.0     0.0 0.0  
Derivative liability 0.0     0.0 0.0  
Recurring | Quoted Prices in Active Markets (Level 1) | Commodity derivative contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 0.0     0.0 0.0  
Derivative liability 0.0     0.0 0.0  
Recurring | Quoted Prices in Active Markets (Level 1) | Equity securities            
Fair Value, Net Asset (Liability) [Abstract]            
Equity securities 0.0     0.0 0.0  
Recurring | Quoted Prices in Active Markets (Level 1) | Convertible debt securities            
Fair Value, Net Asset (Liability) [Abstract]            
Debt securities 0.0     0.0 0.0  
Recurring | Quoted Prices in Active Markets (Level 1) | Swap lock contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative liability 0.0     0.0    
Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 56.4     56.4 76.6  
Derivative liability 17.8     17.8 9.7  
Recurring | Significant Other Observable Inputs (Level 2) | Commodity derivative contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 91.0     91.0 21.2  
Derivative liability 0.9     0.9 5.3  
Recurring | Significant Other Observable Inputs (Level 2) | Equity securities            
Fair Value, Net Asset (Liability) [Abstract]            
Equity securities 36.3     36.3 1,639.7  
Recurring | Significant Other Observable Inputs (Level 2) | Convertible debt securities            
Fair Value, Net Asset (Liability) [Abstract]            
Debt securities 146.6     146.6 176.3  
Recurring | Significant Other Observable Inputs (Level 2) | Swap lock contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative liability 0.4     0.4    
Recurring | Significant Unobservable Inputs (Level 3) | Foreign currency contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 0.0     0.0 0.0  
Derivative liability 0.0     0.0 0.0  
Recurring | Significant Unobservable Inputs (Level 3) | Commodity derivative contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative asset 0.0     0.0 0.0  
Derivative liability 0.0     0.0 0.0  
Recurring | Significant Unobservable Inputs (Level 3) | Equity securities            
Fair Value, Net Asset (Liability) [Abstract]            
Equity securities 0.0     0.0 0.0  
Recurring | Significant Unobservable Inputs (Level 3) | Convertible debt securities            
Fair Value, Net Asset (Liability) [Abstract]            
Debt securities 0.0     0.0 $ 0.0  
Recurring | Significant Unobservable Inputs (Level 3) | Swap lock contracts            
Fair Value, Net Asset (Liability) [Abstract]            
Derivative liability $ 0.0     $ 0.0