Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments (Details 1)

v3.20.1
Fair Value of Financial Instruments (Details 1) - USD ($)
$ in Millions
12 Months Ended
Jun. 27, 2019
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Fair Value Net Asset (Liability) [Abstract]        
Debt securities   $ 1,117.1 $ 3,234.7  
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value   (2,126.4) 1,971.2 $ 464.3
Equity Securities [Member] | November 2017 Canopy Investment [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value   0.0 292.5  
Warrant [Member] | November 2017 Canopy Warrants [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value   (543.7) 465.5  
Warrant [Member] | November 2018 Canopy Warrants [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value     1,157.7  
Warrant [Member] | New November 2018 Canopy Warrants [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value   (1,488.1)    
Warrant [Member] | New November 2018 Canopy Warrants Modification [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value $ 1,176.0 1,176.0    
Convertible debt securities [Member]        
Debt and Equity Securities, Unrealized Gain (Loss), Excluding Other-than-temporary Impairment [Abstract]        
Unrealized net gain (loss) on securities measured at fair value   (94.6) 55.5  
Recurring [Member] | Foreign currency contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   96.3 38.2  
Derivative liability   34.4 15.7  
Recurring [Member] | Commodity derivative contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.6 8.7  
Derivative liability   40.9 11.6  
Recurring [Member] | Interest rate swap contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.8    
Recurring [Member] | Treasury lock contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   7.6    
Recurring [Member] | Equity Securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Equity securities   991.5 3,023.2  
Recurring [Member] | Convertible debt securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Debt securities   125.6 211.5  
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Foreign currency contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.0 0.0  
Derivative liability   0.0 0.0  
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Commodity derivative contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.0 0.0  
Derivative liability   0.0 0.0  
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Interest rate swap contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.0    
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Treasury lock contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.0    
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Equity Securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Equity securities   0.0 0.0  
Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Convertible debt securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Debt securities   0.0 0.0  
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign currency contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   96.3 38.2  
Derivative liability   34.4 15.7  
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commodity derivative contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.6 8.7  
Derivative liability   40.9 11.6  
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest rate swap contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.8    
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Treasury lock contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   7.6    
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Equity securities   991.5 3,023.2  
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Convertible debt securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Debt securities   125.6 211.5  
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Foreign currency contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.0 0.0  
Derivative liability   0.0 0.0  
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commodity derivative contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative asset   0.0 0.0  
Derivative liability   0.0 0.0  
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Interest rate swap contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.0    
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Treasury lock contracts [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Derivative liability   0.0    
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Equity securities   0.0 0.0  
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Convertible debt securities [Member]        
Fair Value Net Asset (Liability) [Abstract]        
Debt securities   $ 0.0 $ 0.0