Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments (Details Textual)

v3.10.0.1
Fair Value of Financial Instruments (Details Textual)
$ in Millions, $ in Millions
9 Months Ended
Jun. 30, 2018
CAD ($)
Jun. 30, 2018
USD ($)
Nov. 30, 2018
USD ($)
Nov. 30, 2017
USD ($)
Feb. 28, 2018
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Payments to acquire investments     $ 4,077.3 $ 191.3  
Long-term debt, including current portion     12,838.1   $ 9,439.9
Carrying amount [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt, including current portion     12,838.1   9,439.9
Fair value [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt, including current portion     $ 12,460.7   $ 9,398.4
Convertible debt securities [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Payments to acquire investments $ 200.0 $ 150.5