Quarterly report pursuant to Section 13 or 15(d)

Borrowings (Details Textual)

v3.19.3
Borrowings (Details Textual) - USD ($)
Aug. 31, 2019
Jul. 31, 2019
Jun. 30, 2019
Feb. 28, 2019
Oct. 31, 2018
Sep. 30, 2018
Nov. 30, 2014
Schedule of Debt [Line Items]              
Debt instrument, face amount           $ 2,000,000,000.0  
Short-term borrowings $ 150,900,000     $ 791,500,000      
Unamortized debt issuance costs, long-term debt obligations 68,400,000            
Unamortized discount, long-term debt obligations 14,700,000            
Designated as hedging instrument [Member] | Interest rate swap contracts [Member]              
Schedule of Debt [Line Items]              
Aggregate notional value of derivative instruments 375,000,000.0   $ 375,000,000.0 0      
Average fixed interest rate, interest rate swap contracts     1.90%        
Commercial paper [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount 151,000,000.0            
Short-term borrowings $ 150,900,000     $ 732,500,000      
Interest rate 2.40%            
Commercial paper [Member] | Maximum [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount         $ 2,000,000,000.0    
Unsecured debt [Member] | Term Credit Agreement [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount $ 1,500,000,000.0         1,500,000,000  
Unsecured debt [Member] | Three-Year Term Facility [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount $ 500,000,000.0         500,000,000.0  
Interest rate 3.40%            
Unsecured debt [Member] | Five-Year Term Facility [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount $ 1,000,000,000.0         $ 1,000,000,000.0  
Interest rate 3.50%            
Unsecured debt [Member] | 2019 Five-Year Term Facility [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount $ 491,300,000   $ 491,300,000        
Interest rate 3.10%            
Unsecured debt [Member] | July 2019 Senior Notes [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount   $ 800,000,000.0          
Coupon rates of notes   3.15%          
Proceeds from issuance of long-term debt, net of discount and debt issuance costs $ 793,000,000.0            
Percentage of outstanding principal amount as redemption price 100.00%            
Basis points above adjusted treasury rate 20.00%            
Unsecured debt [Member] | November 2014 Senior Notes [Member]              
Schedule of Debt [Line Items]              
Debt instrument, face amount             $ 400,000,000.0
Coupon rates of notes             3.875%