Annual report pursuant to Section 13 and 15(d)

Borrowings - Narrative (Details)

v3.22.1
Borrowings - Narrative (Details) - USD ($)
 12 Months Ended
Apr. 30, 2020
Feb. 28, 2022
Feb. 28, 2021
Feb. 29, 2020
Apr. 21, 2022
Apr. 14, 2022
Jun. 01, 2021
May 31, 2021
Mar. 31, 2020
Jun. 30, 2019
Sep. 30, 2018
Oct. 31, 2017
Schedule of Debt [Line Items]                        
Short-term borrowings   $ 323,000,000.0 $ 0                  
Other comprehensive income (loss), net of income tax effect   (80,400,000) (80,300,000) $ 90,500,000                
Additional credit arrangements   64,500,000 61,200,000                  
Additional credit arrangements, Outstanding   19,900,000 15,500,000                  
Unamortized debt issuance costs, long-term debt obligations   57,700,000                    
Unamortized discount, long-term debt obligations   18,700,000                    
Unrealized gain (loss) on cash flow hedges:                        
Schedule of Debt [Line Items]                        
Other comprehensive income (loss), net of income tax effect $ (21,800,000) (26,000,000.0) (19,000,000.0) $ 37,400,000                
Interest rate swap contracts | Derivative instruments designated as hedging instruments                        
Schedule of Debt [Line Items]                        
Aggregate notional value of derivative instruments                   $ 375,000,000    
Average fixed interest rate, interest rate swap contracts                   1.90%    
Swap lock contracts | Derivative instruments designated as hedging instruments                        
Schedule of Debt [Line Items]                        
Aggregate notional value of derivative instruments   100,000,000.0 0                  
Swap lock contracts | Derivative instruments designated as hedging instruments | Subsequent Event                        
Schedule of Debt [Line Items]                        
Aggregate notional value of derivative instruments         $ 250,000,000              
Swap lock contracts | Cash flow hedging | Derivative instruments designated as hedging instruments | Subsequent Event                        
Schedule of Debt [Line Items]                        
Aggregate notional value of derivative instruments         $ 150,000,000              
Treasury lock contracts | Derivative instruments designated as hedging instruments                        
Schedule of Debt [Line Items]                        
Aggregate notional value of derivative instruments                 $ 500,000,000      
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             $ 2,000,000,000      
Short-term borrowings   $ 0                    
Revolving credit facility | Subsequent Event                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount           $ 2,250,000,000            
Revolving credit facility | London Interbank Offered Rate (LIBOR)                        
Schedule of Debt [Line Items]                        
LIBOR margin   0.00%                    
Commercial paper                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount   $ 323,000,000                    
Short-term borrowings   323,000,000.0 $ 0                  
Commercial paper | Maximum                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount                       $ 2,000,000,000
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  
Five-Year Term Facility | Unsecured debt                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount                     $ 1,000,000,000  
Five-Year Term Facility | Unsecured debt                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount   $ 491,300,000               $ 491,300,000    
Five-Year Term Facility | Unsecured debt | London Interbank Offered Rate (LIBOR)                        
Schedule of Debt [Line Items]                        
LIBOR margin   0.88%         0.63% 0.88%        
2.875% Senior Notes Due May 2030 | Unsecured debt                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount 600,000,000.0                      
Coupon rate of notes   2.875%                    
3.75% Senior Notes Due May 2050 | Unsecured debt                        
Schedule of Debt [Line Items]                        
Debt instrument, face amount $ 600,000,000.0                      
Coupon rate of notes   3.75%