Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Narrative (Details)

v3.21.2
Borrowings - Narrative (Details) - USD ($)
3 Months Ended
Aug. 31, 2021
Jul. 31, 2021
Aug. 31, 2021
Jun. 01, 2021
May 31, 2021
Feb. 28, 2021
Nov. 30, 2017
Oct. 31, 2017
May 31, 2017
Schedule of Debt [Line Items]                  
Short-term borrowings $ 486,000,000.0   $ 486,000,000.0     $ 0      
Commercial paper                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount 486,000,000   486,000,000         $ 2,000,000,000  
Short-term borrowings $ 486,000,000   $ 486,000,000     $ 0      
Interest rate 0.20%   0.20%            
Weighted average remaining term 15 days                
Unsecured debt                  
Schedule of Debt [Line Items]                  
Basis points above adjusted treasury rate   15.00%              
2019 Five-Year Term Facility | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount $ 491,300,000   $ 491,300,000            
Interest rate 0.70%   0.70%            
2019 Five-Year Term Facility | Unsecured debt | LIBOR                  
Schedule of Debt [Line Items]                  
LIBOR margin 0.63%   0.63% 0.63% 0.88%        
2.25% July 2021 Senior Notes | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount   $ 1,000,000,000              
Coupon rates of notes   2.25%              
Proceeds from issuance of long-term debt, net of discount and debt issuance costs $ 987,400,000                
Percentage of outstanding principal amount as redemption price   100.00%              
2.70% May 2017 Senior Notes | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount                 $ 500,000,000
Coupon rates of notes                 2.70%
Percentage of outstanding principal amount as redemption price     100.00%            
Make-whole payment     $ 26,600,000            
2.65% November 2017 Senior Notes | Unsecured debt                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             $ 700,000,000    
Coupon rates of notes             2.65%    
Percentage of outstanding principal amount as redemption price     100.00%            
Make-whole payment     $ 26,600,000