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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notional amount $ 213  
Other current assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Market Value 0 $ 0
Accounts payable and other current liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Market Value $ 1 $ 0