Annual report pursuant to Section 13 and 15(d)

Borrowings - Narrative (Details)

v3.21.1
Borrowings - Narrative (Details) - USD ($)
 12 Months Ended
Apr. 30, 2020
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Mar. 31, 2020
Jun. 30, 2019
Sep. 30, 2018
Aug. 31, 2018
Oct. 31, 2017
Schedule of Debt [Line Items]                  
Other comprehensive income (loss), net of income tax effect   $ (80,300,000) $ 90,500,000 $ (152,800,000)          
Additional credit arrangements   61,200,000 71,800,000            
Additional credit arrangements, Outstanding   15,500,000 25,300,000            
Conversion of long-term debt to noncontrolling equity interest   0 0 248,200,000          
Unamortized debt issuance costs, long-term debt obligations   60,600,000              
Unamortized discount, long-term debt obligations   17,000,000.0              
Net unrealized gain (loss) on derivative instruments                  
Schedule of Debt [Line Items]                  
Other comprehensive income (loss), net of income tax effect $ (21,800,000) (19,000,000.0) 37,400,000 10,600,000          
Interest rate swap contracts | Derivative instruments designated as hedging instruments                  
Schedule of Debt [Line Items]                  
Aggregate notional value of derivative instruments   0 375,000,000.0     $ 375,000,000.0      
Average fixed interest rate, interest rate swap contracts           1.90%      
Treasury lock contracts | Derivative instruments designated as hedging instruments                  
Schedule of Debt [Line Items]                  
Aggregate notional value of derivative instruments   0 $ 300,000,000.0   $ 500,000,000.0        
Average fixed interest rate, interest rate swap contracts         1.20%        
Revolving credit facility                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount   2,000,000,000.0     $ 2,000,000,000.0   $ 2,000,000,000.0 $ 1,500,000,000  
Commercial paper | Maximum                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount                 $ 2,000,000,000.0
Term Credit Agreement | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             1,500,000,000    
Three-Year Term Facility | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             500,000,000.0    
Five-Year Term Facility | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             $ 1,000,000,000.0    
2019 Five-Year Term Facility | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount   $ 491,300,000       $ 491,300,000      
NCI Arrangement                  
Schedule of Debt [Line Items]                  
Conversion of long-term debt to noncontrolling equity interest       $ 248,200,000