Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Credit Agreements (Details)

v3.20.2
Borrowings - Credit Agreements (Details) - USD ($)
Aug. 31, 2020
Mar. 31, 2020
Feb. 29, 2020
Schedule of Debt [Line Items]      
Debt instrument, face amount   $ 2,000,000,000.0  
Short-term borrowings $ 0   $ 238,900,000
2019 Five-Year Term Facility | Unsecured debt      
Schedule of Debt [Line Items]      
Debt instrument, face amount 491,300,000 $ 491,300,000  
Unsecured Debt $ 466,700,000    
Interest rate 1.00%    
LIBOR margin 0.88%    
Revolving credit facility      
Schedule of Debt [Line Items]      
Debt instrument, face amount $ 2,000,000,000.0    
Short-term borrowings $ 0    
Interest rate 0.00%    
LIBOR margin 0.00%    
Remaining borrowing capacity $ 1,988,200,000    
Letters of credit      
Schedule of Debt [Line Items]      
Debt instrument, face amount 200,000,000.0    
Outstanding letters of credit $ 11,800,000