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SIGNIFICANT ACCOUNTING POLICIES Recently Issued Accounting Standards (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Receivable Sold Under Factoring Arrangement | $ 289 | $ 457

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- Definition Receivable Sold Under Factoring Arrangement + References No definition available. + Details
Name: | emn_ReceivableSoldUnderFactoringArrangement
Namespace Prefix: | emn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition 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. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration