v3.22.4
SUPPLEMENTARY INFORMATION (Sundry) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Supplementary Information [Line Items]      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 34 $ 32 $ (20)
Gain (Loss) on Disposition of Property Plant Equipment 3 6 0
Gain (Loss) on Extinguishment of Debt 0 0 (19)
Other - net (6) (7) (11)
Total sundry income (expense) - net (53) (53) 168
Administrative and overhead fees [Member] | The Dow Chemical Company [Member]      
Supplementary Information [Line Items]      
Related Party Transaction, Expenses from Transactions with Related Party (65) (63) (31)
Net Commission Expense [Member] | The Dow Chemical Company [Member]      
Supplementary Information [Line Items]      
Related Party Transaction, Expenses from Transactions with Related Party (19) (21) (22)
Marine and Terminal Operations and Assets [Member]      
Supplementary Information [Line Items]      
Gain (Loss) on Disposition of Property Plant Equipment 0 0 185
Rail Infrastructure Operations and Assets [Member]      
Supplementary Information [Line Items]      
Gain (Loss) on Disposition of Property Plant Equipment $ 0 $ 0 $ 86