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FAIR VALUE MEASUREMENTS - Fair Value and Carrying Amounts Measured on a Recurring Basis (Details) - Fair Value, Recurring
$ in Millions
Mar. 31, 2020
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Derivative assets $ 23
Derivative liabilities (10)
Level 1  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Derivative assets 0
Derivative liabilities 0
Level 2  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Derivative assets 23
Derivative liabilities (10)
Level 3  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Derivative assets 0
Derivative liabilities $ 0