Summary of Sundry Income (Expense) - Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Charges related to separation, distribution and tax matters agreements	$ (12)
Sundry income (expense) - net	148	$ 128
Nonoperating Income (Expense)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	89	75
Foreign Currency Transaction Gain (Loss), before Tax	2	(8)
Gain (Loss) on Disposition of Other Assets	31	48
Charges related to separation, distribution and tax matters agreements	12	0
Other Nonoperating Income (Expense)	14	13
Sundry income (expense) - net	148	128
The Dow Chemical Company
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	89	75
Foreign Currency Transaction Gain (Loss), before Tax	2	(12)
Gain (Loss) on Disposition of Other Assets	31	48
Other Nonoperating Income (Expense)	14	8
Sundry income (expense) - net	$ 136	$ 119