Quarterly report pursuant to Section 13 or 15(d)

Equity Method Investments (Details Textual)

v3.19.2
Equity Method Investments (Details Textual)
$ / shares in Units, shares in Millions, $ in Millions, $ in Millions
 1 Months Ended 3 Months Ended
May 31, 2019
USD ($)
Nov. 01, 2018
CAD ($)
$ / shares
shares
Nov. 01, 2018
USD ($)
Nov. 30, 2017
CAD ($)
$ / shares
shares
Nov. 30, 2017
USD ($)
May 31, 2019
USD ($)
May 31, 2018
USD ($)
Jun. 28, 2019
$ / shares
shares
Feb. 28, 2019
Schedule of Equity Method Investments [Line Items]                  
Payments to acquire investments | $           $ 20.0 $ 1.5    
Equity in earnings (losses) of equity method investees | $           (103.0) $ 4.7    
Canopy Equity Method Investment [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Fair value of equity method investment | $ $ 4,973.1         $ 4,973.1      
Equity method investment, ownership percentage 35.80% 36.60%       35.80%     36.00%
Equity in earnings (losses) of equity method investees | $           $ (106.0)      
November 2017 Canopy Investment [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Cost method investment, ownership percentage       9.90%          
Equity securities [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Payments to acquire investments   $ 5,078.7 $ 3,869.9 $ 245.0 $ 191.3        
Common Stock [Member] | November 2018 Canopy Investment [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of common shares acquired   104.5              
Common Stock [Member] | November 2017 Canopy Investment [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of common shares acquired       18.9          
Warrant [Member] | Canopy Warrants [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Payments to acquire investments | $ $ 5,600.0                
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       18.9          
Exercise price of warrants, C$ per share | $ / shares       $ 12.98          
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   139.7              
Warrant [Member] | Tranche A Warrants [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of common shares to be acquired upon exercise of warrants   88.5              
Exercise price of warrants, C$ per share | $ / 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   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               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               88.5  
Exercise price of warrants, C$ per share | $ / 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               38.4  
Exercise price of warrants, C$ per share | $ / 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               12.8