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DERIVATIVE AND NON-DERIVATIVE FINANCIAL INSTRUMENTS (Tables) | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items] |
Cumulative basis adjustments for fair value hedges on balance sheet [Table Text Block] | As of March 31, 2018 and December 31, 2017, the following amounts were included on the Unaudited Consolidated Statements of Financial Position related to cumulative basis adjustments for fair value hedges.
(Dollars in millions) |  | Carrying amount of the hedged liabilities |  | Cumulative amount of fair value hedging loss adjustment included in the carrying amount of the hedged liability
Line item in the Unaudited Consolidated Statements of Financial Position in which the hedged item is included |  | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Long-term borrowings (1) |  | $ | (758 | ) |  | $ | (760 | ) |  | $ | 12 |  |  | $ | 10 |
(1) | At March 31, 2018 and December 31, 2017, the cumulative amount of fair value hedging loss adjustment remaining for hedged liabilities for which hedge accounting has been discontinued was $7 million and $6 million, respectively.
Derivative Instruments, Gain (Loss) [Table Text Block] |
Location and Amount of Gain or (Loss) Recognized in Earnings on Fair Value and Cash Flow Hedging Relationships
|  | First Quarter
|  | 2018 |  | 2017
(Dollars in millions) |  | Sales |  | Cost of Sales |  | Net Interest Expense |  | Sales |  | Cost of Sales |  | Net Interest Expense
Total amounts of income and expense line items presented in the Unaudited Consolidated Statements of Earnings, Comprehensive Income and Retained Earnings in which the effects of fair value or cash flow hedges are recognized |  | $ | 2,607 |  |  | $ | 2,026 |  |  | $ | 59 |  |  | $ | 2,303 |  |  | $ | 1,698 |  |  | $ | 60 |
The effects of fair value and cash flow hedging: |  |  |  |  |  |  |  |  |  |  |  |
Gain or (loss) on fair value hedging relationships in Subtopic 815-20: |  |  |  |  |  |  |  |  |  |  |  |
Interest contracts (fixed-for-floating interest rate swaps): |  |  |  |  |  |  |  |  |  |  |  |
Hedged items |  |  |  |  |  | — |  |  |  |  |  |  | (1 | )
Derivatives designated as hedging instruments |  |  |  |  |  | — |  |  |  |  |  |  | 1 |
Gain or (loss) on cash flow hedging relationships in Subtopic 815-20: |  |  |  |  |  |  |  |  |  |  |  |
Interest contracts (forward starting interest rate and treasury lock swap contracts): |  |  |  |  |  |  |  |  |  |  |  |
Amount of loss reclassified from AOCI into earnings |  |  |  |  |  | (1 | ) |  |  |  |  |  | (1 | )
Commodity Contracts: |  |  |  |  |  |  |  |  |  |  |  |
Amount of loss reclassified from AOCI into earnings |  |  |  | (2 | ) |  |  |  |  |  | (7 | ) |  |
Foreign Exchange Contracts: |  |  |  |  |  |  |  |  |  |  |  |
Amount of gain reclassified from AOCI into earnings |  | 3 |  |  |  |  |  |  | 12 |  |  |  |  |
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] | The following table presents the notional amounts outstanding at March 31, 2018 and December 31, 2017 associated with Eastman's hedging programs.
Notional Outstanding |  | March 31, 2018 |  | December 31, 2017
Derivatives designated as cash flow hedges: |  |  |  |
Foreign Exchange Forward and Option Contracts (in millions) |  |  |  |
| EUR/USD (in EUR) |  | €498 |  | €525
Commodity Forward and Collar Contracts |  |  |  |
| Feedstock (in million barrels) |  | 7 |  |  | 7 |
| Energy (in million million british thermal units) |  | 20 |  |  | 23 |
Derivatives designated as fair value hedges: |  |  |  |
Fixed-for-floating interest rate swaps (in millions) |  | $75 |  | $75
Derivatives designated as net investment hedges: |  |  |  |
Cross-currency interest rate swaps (in millions) |  |  |  |
| EUR/USD (in EUR) |  | €416 |  | — |
Non-derivatives designated as net investment hedges: |  |  |  |
Foreign Currency Net Investment Hedges (in millions) |  |  |  |
| EUR/USD (in EUR) |  | €1,241 |  | €1,240
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) | The following table presents the effect of cash flow and net investment hedge accounting on OCI for first quarter 2018 and 2017:
(Dollars in millions) |  | Change in amount of after tax gain (loss) recognized in OCI on derivatives |  | Pre-tax amount of gain (loss) reclassified from OCI into earnings
|  | March 31, |  | March 31,
Hedging Relationships |  | 2018 |  | 2017 |  | 2018 |  | 2017
Derivatives in cash flow hedging relationships: |  |  |  |  |  |  |  |
Commodity contracts |  | $ | (11 | ) |  | $ | (16 | ) |  | $ | (2 | ) |  | $ | (7 | )
Foreign exchange contracts |  | (13 | ) |  | (10 | ) |  | 3 |  |  | 12 |
Forward starting interest rate and treasury lock swap contracts |  | 1 |  |  | 1 |  |  | (1 | ) |  | (1 | )
Non-derivatives in net investment hedging relationships (pre-tax): |  |  |  |  |  |  |  |
Net investment hedges |  | (42 | ) |  | (18 | ) |  | — |  |  | — |
Derivatives in net investment hedging relationships (pre-tax): |  |  |  |  |  |  |  |
Cross-currency interest rate swaps |  | (11 | ) |  | — |  |  | — |  |  | — |
Cross-currency interest rate swaps excluded component |  | (11 | ) |  | — |  |  | — |  |  | — |
Financial assets and liabilities valued on a recurring basis | The following table presents the financial assets and liabilities valued on a recurring and gross basis and includes where the financial assets and liabilities are located within the Unaudited Consolidated Statements of Financial Position as of March 31, 2018 and December 31, 2017.
The Financial Position and Fair Value Measurements of Hedging Instruments on a Gross Basis
(Dollars in millions) |  |  |  |  |  |
Derivative Type |  | Statements of Financial Position Classification |  | March 31, 2018 Level 2 |  | December 31, 2017 Level 2
Derivatives designated as cash flow hedges: |  |  |  |  |  |
Commodity contracts |  | Other current assets |  | $ | 5 |  |  | $ | 9 |
Commodity contracts |  | Other noncurrent assets |  | 2 |  |  | 4 |
Foreign exchange contracts |  | Other current assets |  | 15 |  |  | 23 |
Foreign exchange contracts |  | Other noncurrent assets |  | 1 |  |  | 2 |
Derivatives designated as fair value hedges: |  |  |  |  |  |
Fixed-for-floating interest rate swap |  | Other current assets |  | — |  |  | 1 |
Total Derivative Assets |  |  |  | $ | 23 |  |  | $ | 39 |
Derivatives designated as cash flow hedges: |  |  |  |  |  |
Commodity contracts |  | Payables and other current liabilities |  | $ | 31 |  |  | $ | 28 |
Commodity contracts |  | Other long-term liabilities |  | 10 |  |  | 10 |
Foreign exchange contracts |  | Payables and other current liabilities |  | 10 |  |  | 6 |
Foreign exchange contracts |  | Other long-term liabilities |  | 9 |  |  | 4 |
Derivatives designated as fair value hedges: |  |  |  |  |  |
Fixed-for-floating interest rate swap |  | Long-term borrowings |  | 5 |  |  | 4 |
Derivatives designated as net investment hedges: |  |  |  |  |  |
Cross-currency interest rate swaps |  | Long-term borrowings |  | 22 |  |  | — |
Total Derivative Liabilities |  |  |  | $ | 87 |  |  | $ | 52 |
Total Net Derivative Liabilities |  |  |  | $ | 64 |  |  | $ | 13 |

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- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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