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COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Loss Contingencies [Line Items]    
Loss Contingency Accrual $ 3 $ 4
Other Commitment 452  
Letter of Credit [Member]    
Loss Contingencies [Line Items]    
Letters of credit outstanding 80  
Surety Bonds [Member]    
Loss Contingencies [Line Items]    
Other Commitment $ 144