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COMMITMENTS AND CONTINGENCIES Nova Ethylene Asset Matter (Details) - Nova Ethylene Asset Matter [Member]
$ in Millions, $ in Millions
Sep. 18, 2019
CAD ($)
Sep. 18, 2019
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Gain Contingencies [Line Items]        
Litigation Settlement, Amount Awarded from Other Party $ 1,430 $ 1,080    
Estimated Litigation Liability, Noncurrent     $ 323 $ 323