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COMMITMENTS AND CONTINGENT LIABILITIES (Environmental Matters) (Narrative) (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Site Contingency [Line Items]    
Accrual for Environmental Loss Contingencies $ 142 $ 133
Super Fund Sites [Member]    
Site Contingency [Line Items]    
Accrual for Environmental Loss Contingencies $ 19 $ 18