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FINANCING ARRANGEMENTS - SHORT TERM BORROWINGS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Short-term Debt [Line Items]    
Total short-term debt $ 299 $ 2
Add: Current portion of long-term debt 296 0
Maximum month-end short-term debt outstanding during the year $ 299 $ 148
Weighted-average interest rate on short-term debt at year-end 1.90% 3.70%
Other short-term loans    
Short-term Debt [Line Items]    
Total short-term debt $ 3 $ 2
Fixed interest rate 1.90% 3.70%