Related Party Transactions Dow Intercompany Transactions (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Corteva [Member] \| EID [Member]
Related Party Transaction [Line Items]
Interest Expense, Related Party	$ 10	$ 13	$ 19	$ 28

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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