Quarterly report pursuant to Section 13 or 15(d)

Borrowings (Details Textual)

v3.10.0.1
Borrowings (Details Textual) - USD ($)
6 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Oct. 04, 2018
Feb. 28, 2018
Schedule of Debt [Line Items]        
Debt instrument, face amount $ 2,000,000,000.0      
Short-term borrowings 717,100,000     $ 746,800,000
Conversion of long-term debt to noncontrolling equity interest 248,400,000 $ 0    
Commercial paper [Member]        
Schedule of Debt [Line Items]        
Debt instrument, face amount 653,000,000      
Short-term borrowings $ 652,100,000     $ 266,900,000
Interest rate 2.40%      
Commercial paper [Member] | Subsequent event [Member]        
Schedule of Debt [Line Items]        
Increase in commercial paper borrowings     $ 1,000,000,000  
Commercial paper [Member] | Maximum [Member]        
Schedule of Debt [Line Items]        
Debt instrument, face amount $ 1,000,000,000.0      
Commercial paper [Member] | Maximum [Member] | Subsequent event [Member]        
Schedule of Debt [Line Items]        
Debt instrument, face amount     $ 2,000,000,000.0