Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details 1)

v3.19.2
Fair Value of Financial Instruments (Details 1) - USD ($)
$ in Millions
3 Months Ended
May 31, 2019
May 31, 2018
Feb. 28, 2019
Fair Value, Net Asset (Liability) [Abstract]      
Debt securities $ 2,409.5   $ 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 (827.5) $ 258.3  
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 0.0 132.9  
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 (134.1) 125.4  
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 (660.8) 0.0  
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 (32.6) $ 0.0  
Recurring [Member] | Foreign currency contracts [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Derivative asset 36.5   38.2
Derivative liability 22.6   15.7
Recurring [Member] | Commodity derivative contracts [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Derivative asset 4.0   8.7
Derivative liability 21.3   11.6
Recurring [Member] | Equity securities [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Equity securities 2,228.3   3,023.2
Recurring [Member] | Convertible debt securities [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Debt securities 181.2   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] | 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 36.5   38.2
Derivative liability 22.6   15.7
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commodity derivative contracts [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Derivative asset 4.0   8.7
Derivative liability 21.3   11.6
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Equity securities 2,228.3   3,023.2
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Convertible debt securities [Member]      
Fair Value, Net Asset (Liability) [Abstract]      
Debt securities 181.2   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] | 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