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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, 2021
Dec. 31, 2020
Credit Facilities [Abstract]    
Borrowings due within one year $ 324 $ 349
Line of Credit Facility, Maximum Month-end Outstanding Amount $ 0 0
Revolving Credit Facility [Member]    
Credit Facilities [Abstract]    
Line of Credit Facility, Expiration Date Oct. 31, 2023  
Line of Credit Facility, Maximum Borrowing Capacity $ 1,500  
Commercial Paper [Member]    
Credit Facilities [Abstract]    
Commercial Paper $ 25 $ 50
Debt, Weighted Average Interest Rate 0.25% 0.25%
A/R Facility [Member]    
Credit Facilities [Abstract]    
Line of Credit Facility, Expiration Date Apr. 30, 2020