Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Payments of Dividends			$ 118	$ 187
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Payments of Dividends	$ 78	$ 25	118	187
Commodity And Raw Material Purchases \| Cost of Sales [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	382	270	1,360	707
Net Commission Expense \| Sundry Income (Expense), Net [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	4	5	16	16
General and Administrative Expense \| Sundry Income (Expense), Net [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	12	7	47	23
Activity Based Costs \| Cost of Sales [Member] \| The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 18	$ 19	$ 55	$ 66