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RESERVE ROLLFORWARDS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance $ 1,091 $ 1,053 $ 969
Charges (Credits) to Cost and Expense (119) 56 121
Charged to Other Accounts 1 (3) (31)
Deductions 17 15 6
Ending Balance 956 1,091 1,053
SEC Schedule, 12-09, Allowance, Credit Loss [Member]      
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance 15 17 14
Charges (Credits) to Cost and Expense 2 (2) 4
Charged to Other Accounts 0 0 (1)
Deductions 0 0 0
Ending Balance 17 15 17
LIFO Inventory [Member]      
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance 493 365 226
Charges (Credits) to Cost and Expense (72) 128 159
Charged to Other Accounts 0 0 (30)
Deductions 0 0 (10)
Ending Balance 421 493 365
Non-environmental asset retirement obligation Costs [Member]      
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance 51 51 51
Charges (Credits) to Cost and Expense 1 2 2
Charged to Other Accounts 0 (1) (1)
Deductions 1 1 1
Ending Balance 51 51 51
Environmental Contingencies [Member]      
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance 274 281 285
Charges (Credits) to Cost and Expense 26 7 11
Charged to Other Accounts 0 0 0
Deductions 16 14 15
Ending Balance 284 274 281
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]      
Movement In Valuation Allowances And Reserves Roll Forward      
Beginning Balance 258 339 393
Charges (Credits) to Cost and Expense (76) (79) (55)
Charged to Other Accounts 1 (2) 1
Deductions 0 0 0
Ending Balance $ 183 $ 258 $ 339