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BORROWINGS Part 2 (Details) Credit Facility and Commercial Paper Borrowings - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Credit Facilities [Abstract]    
Borrowings due within one year $ 895 $ 171
Line of Credit Facility, Maximum Month-end Outstanding Amount   0
Line of Credit [Member]    
Credit Facilities [Abstract]    
Long-term Debt 400 0
Revolving Credit Facility [Member]    
Credit Facilities [Abstract]    
Line of Credit Facility, Maximum Month-end Outstanding Amount $ 400 0
Line of Credit Facility, Expiration Date Oct. 31, 2023  
Debt, Weighted Average Interest Rate 2.17%  
Line of Credit Facility, Maximum Borrowing Capacity $ 1,500  
Commercial Paper [Member]    
Credit Facilities [Abstract]    
Commercial Paper $ 310 $ 170
Debt, Weighted Average Interest Rate 3.13% 2.03%
A/R Facility [Member]    
Credit Facilities [Abstract]    
Credit Facility, Borrowing Capacity $ 250  
Line of Credit Facility, Maximum Month-end Outstanding Amount 0  
Proceeds from Lines of Credit 350  
Repayments of Lines of Credit $ 350  
Line of Credit Facility, Expiration Date Apr. 30, 2020