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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Payments of Dividends			$ 394	$ 768
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Payments of Dividends	$ 144	$ 247	394	768
Commodity And Raw Material Purchases \| Cost of Sales [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party	286	518	867	1,586
Net Commission Expense \| Sundry Income (Expense), Net [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party	5	5	15	15
General and Administrative Expense \| Sundry Income (Expense), Net [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party	17	16	51	48
Activity Based Costs \| Cost of Sales [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party	$ 23	$ 24	$ 74	$ 66