RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2023	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	$ 389		$ 389
Adjustments to Additional Paid in Capital, Other			893
Other Tax Expense (Benefit)			$ 251
Equity Ownership, Excluding Consolidated Entity and Equity Method Investee, Percentage	0.50%		0.50%
Gain on Sale of Investments			$ 206	$ 0	$ 0
Financing Receivable, Revolving	$ 799		799	958
Line of Credit Facility, Remaining Borrowing Capacity	948		948	942
Payments of Dividends			$ 512	1,063	288
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Service Fee with Parent			10.00%
Line of Credit Facility, Maximum Borrowing Capacity	1,000		$ 1,000
Payments of Dividends			512	1,063	288
The Dow Chemical Company [Member] | Estimated Federal Tax Liability, Related Party [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction			113	155	42
Noncurrent receivables from related companies | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Loans and Leases Receivable, Related Parties	1,543		1,543
Sundry Income (Expense), Net [Member]
Related Party Transaction [Line Items]
Gain on Sale of Investments			206
Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Income (Loss) from Equity Method Investments	$ 10
Commodity and Raw Material Purchases | Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party			1,078	1,909	1,915
Net Commission Expense [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party			19	19	21
Net Commission Expense [Member] | Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party			19	19	21
General and Administrative Expense [Member] | Sundry Income (Expense), Net [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party			72	65	63
Activity Based Costs [Member] | Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Costs and Expenses, Related Party			$ 158	$ 89	$ 74
Weather Events Insurance Recovery [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction		$ 114