XML 110 R84.htm IDEA: XBRL DOCUMENT v3.20.4

INCOME TAXES Tax Sharing Agreement - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
DuPont Tax Sharing Agreement	$ 261	$ 312

X

- Definition

DuPont Tax Sharing Agreement

+ References

No definition available.

+ Details

Name:	dow_DuPontTaxSharingAgreement
Namespace Prefix:	dow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration