Quarterly report pursuant to Section 13 or 15(d)

Borrowings (Details Textual)

v3.10.0.1
Borrowings (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Nov. 30, 2018
Aug. 31, 2018
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2018
Nov. 30, 2017
Oct. 31, 2018
Sep. 30, 2018
Feb. 28, 2018
Schedule of Debt [Line Items]                  
Debt instrument, face amount $ 2,500,000,000   $ 2,500,000,000   $ 2,500,000,000        
Short-term borrowings 731,500,000   731,500,000   731,500,000       $ 746,800,000
Net gain (loss) on undesignated derivative contracts     (12,800,000) $ 1,500,000 (28,600,000) $ 8,700,000      
Conversion of long-term debt to noncontrolling equity interest   $ 248,400,000     248,400,000 $ 0      
Unamortized debt issuance costs, long-term debt obligations 72,900,000   72,900,000   72,900,000        
Unamortized discount, long-term debt obligations 16,100,000   16,100,000   16,100,000        
Term loan credit facilities [Member] | Term Credit Agreement [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount 1,500,000,000   1,500,000,000   1,500,000,000     $ 1,500,000,000  
Term loan credit facilities [Member] | Three-Year Term Facility [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount $ 500,000,000   $ 500,000,000   $ 500,000,000     500,000,000  
Interest rate 3.40%   3.40%   3.40%        
Term loan credit facilities [Member] | Five-Year Term Facility [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount $ 1,000,000,000   $ 1,000,000,000   $ 1,000,000,000     1,000,000,000  
Interest rate 3.50%   3.50%   3.50%        
Senior notes [Member] | October 2018 Senior Notes [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             $ 2,150,000,000    
Proceeds from issuance of long-term debt, net of discount and debt issuance costs $ 2,129,000,000                
Interest rate swap contracts [Member]                  
Schedule of Debt [Line Items]                  
Net gain (loss) on undesignated derivative contracts     $ 32,400,000   $ 35,000,000        
Designated as hedging instrument [Member] | Interest rate swap contracts [Member]                  
Schedule of Debt [Line Items]                  
Aggregate notional value of derivative instruments   1,250,000,000              
Senior credit facility, Revolving credit loans [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount 2,000,000,000.0 $ 1,500,000,000.0 2,000,000,000.0   2,000,000,000.0     $ 2,000,000,000  
Short-term borrowings $ 105,000,000   $ 105,000,000   $ 105,000,000       79,000,000
Interest rate 3.40%   3.40%   3.40%        
Commercial paper [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount $ 627,100,000   $ 627,100,000   $ 627,100,000        
Increase in commercial paper borrowings             1,000,000,000    
Short-term borrowings $ 626,500,000   $ 626,500,000   $ 626,500,000       266,900,000
Interest rate 2.70%   2.70%   2.70%        
Commercial paper [Member] | Maximum [Member]                  
Schedule of Debt [Line Items]                  
Debt instrument, face amount             $ 2,000,000,000.0    
Other [Member]                  
Schedule of Debt [Line Items]                  
Short-term borrowings $ 0   $ 0   $ 0       $ 400,900,000