Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Debt and Investments (Details)

v3.21.4
Fair Value of Financial Instruments - Debt and Investments (Details)
shares in Millions, $ in Millions, $ in Millions
9 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2018
CAD ($)
Nov. 30, 2021
USD ($)
shares
Nov. 30, 2020
USD ($)
Feb. 28, 2021
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Payments to acquire investments     $ 28.6 $ 217.4  
Long-term debt, including current portion     10,089.5   $ 10,442.3
Carrying amount          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt, including current portion     10,089.5   10,442.3
Fair value          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt, including current portion     $ 10,995.5   $ 11,580.9
Warrants | Tranche A Warrants          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Number of common shares to be acquired upon exercise of warrants (in shares) | shares     88.5    
Warrants | Tranche B Warrants          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Number of common shares to be acquired upon exercise of warrants (in shares) | shares     38.4    
Warrants | Tranche C Warrants          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Number of common shares to be acquired upon exercise of warrants (in shares) | shares     12.8    
Convertible debt securities          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Payments to acquire investments $ 150.5 $ 200.0