Annual report pursuant to Section 13 and 15(d)

Equity Method Investments (Details Textuals)

v3.19.1
Equity Method Investments (Details Textuals)
$ / shares in Units, shares in Millions, $ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Feb. 28, 2019
USD ($)
Nov. 01, 2018
USD ($)
shares
Nov. 01, 2018
CAD ($)
Nov. 30, 2018
USD ($)
Nov. 30, 2017
USD ($)
Nov. 30, 2017
CAD ($)
$ / shares
shares
Feb. 28, 2019
USD ($)
Feb. 28, 2018
USD ($)
Feb. 28, 2017
USD ($)
Apr. 23, 2019
$ / shares
shares
Nov. 01, 2018
CAD ($)
$ / shares
shares
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire investments             $ 4,081.5 $ 210.9 $ 17.1    
Equity method investments $ 3,465.6           3,465.6 $ 121.5 $ 98.7    
November 2018 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Direct acquisition costs       $ 17.2              
Equity method investments   $ 2,740.3                  
November 2017 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Equity method investments   $ 694.9                  
Canopy Equity Method Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Fair value of equity method investment $ 5,842.9           $ 5,842.9        
Equity method investment, ownership percentage 36.00% 36.60%         36.00% 0.00%     36.60%
Equity method investments $ 3,332.1           $ 3,332.1 $ 0.0      
Equity in losses of equity method investment             (2.6)        
Carrying amount of investment greater than equity in underlying assets 1,400.0           1,400.0        
November 2018 Canopy Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Direct acquisition costs       7.3              
November 2017 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Cost method investment, ownership percentage           9.90%          
November 2018 Canopy Transaction [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Direct acquisition costs       $ 24.5              
Equity Securities [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire investments   $ 3,869.9 $ 5,078.7   $ 191.3 $ 245.0          
Equity securities at fair value 3,023.2           3,023.2 655.6      
Equity Securities [Member] | November 2017 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Equity securities at fair value 0.0           0.0 402.4      
Common Stock [Member] | November 2018 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares acquired | shares   104.5                 104.5
Fair value of equity method investment                     $ 5,060.9
Equity securities, relative fair value allocation   $ 2,723.1                 $ 3,573.7
Common Stock [Member] | November 2017 Canopy Investment [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares acquired | shares           18.9          
Warrant [Member] | Canopy Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Payments to acquire investments 5,900.0                    
Warrant [Member] | November 2017 Canopy Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares           18.9          
Exercise price of warrants | $ / shares           $ 12.98          
Equity securities at fair value 718.7           718.7 253.2      
Warrant [Member] | November 2018 Canopy Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares   139.7                 139.7
Equity securities at fair value $ 2,304.5           $ 2,304.5 $ 0.0     $ 2,131.3
Equity securities, relative fair value allocation   $ 1,146.8                 $ 1,505.0
Warrant [Member] | Tranche A Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares   88.5                 88.5
Exercise price of warrants | $ / shares                     $ 50.40
Warrant [Member] | Tranche B Warrants [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares   51.2                 51.2
Warrant [Member] | New November 2018 Canopy Warrants [Member] | Subsequent Event [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares                   139.7  
Warrant [Member] | New Tranche A Warrants [Member] | Subsequent Event [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares                   88.5  
Exercise price of warrants | $ / shares                   $ 50.40  
Warrant [Member] | New Tranche B Warrants [Member] | Subsequent Event [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares                   38.4  
Exercise price of warrants | $ / shares                   $ 76.68  
Warrant [Member] | New Tranche C Warrants [Member] | Subsequent Event [Member]                      
Schedule of Equity Method Investments [Line Items]                      
Number of common shares to be acquired upon exercise of warrants | shares                   12.8