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v3.22.2

SEPARATION FROM DOWDUPONT Separation, Distribution and Tax Agreements (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Other Current Assets [Member] |  |
Indemnification Asset | $ 19 | $ 0
Other noncurrent assets |  |
Indemnification Asset | 2 | 20
Accrued and Other Current Liabilities [Member] |  |
Indemnification liability | 123 | 148
Deferred cash contribution | 10 | 15
Other Noncurrent Obligations [Member] |  |
Indemnification liability | 33 | 39
Deferred cash contribution | $ 96 | $ 96

X
- Definition Deferred cash contribution + References No definition available. + Details
Name: | dow_Deferredcashcontribution
Namespace Prefix: | dow_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indemnification Asset + References No definition available. + Details
Name: | dow_IndemnificationAsset
Namespace Prefix: | dow_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Indemnification liability + References No definition available. + Details
Name: | dow_Indemnificationliability
Namespace Prefix: | dow_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=dow_AccruedAndOtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=dow_OtherNoncurrentObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |