Participant rollover contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Number of shares sold, price per share (in dollars per share) EBP, Investment, Sold, Price Per Share EBP, Investment, Sold, Price Per Share Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Participant contribution, maximum deferral rate EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Self-directed brokerage account Self-Directed Brokerage Account EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Note receivable from participant, maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENT EBP, Investment, Fair Value and NAV [Text Block] Note receivable from participant, minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Investments at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset Assets EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payments to Participants EBP, Payment to Participant [Policy Text Block] Transfers from non-participant directed EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan Total liabilities EBP, Liability Amendment Flag Amendment Flag Participant contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Investment, interest rate EBP, Investment, Interest Rate EBP, Description of Plan and Accounting Change [Abstract] Receivables EBP, Receivable [Abstract] Schedule of Plan Assets at Fair Value EBP, Investment, Fair Value and NAV [Table Text Block] Participant Directed EBP, Participant-Directed [Member] Investments [Domain] Investments [Domain] Common stock - other EBP, Nonemployer, Common Stock [Member] Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule H, Line 4i – Schedule of Assets (Held At End of Year) EBP, Schedule of Asset Held for Investment [Text Block] SYNTHETIC INVESTMENT CONTRACTS EBP, Synthetic Investment Contracts [Text Block] EBP, Synthetic Investment Contracts Cover [Abstract] Eastman Stock Fund Eastman Stock Fund [Member] Eastman Stock Fund RISKS AND UNCERTAINTIES EBP, Risk and Uncertainty [Text Block] Number of shares purchased (in shares) EBP, Investment, Purchased, Number of Shares Managed Income Fund EBP, Synthetic Investment Contract [Member] Involuntary cash-out limit EBP, Involuntary Cash-out Limit EBP, Involuntary Cash-out Limit Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest income from notes receivable EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Net appreciation (depreciation) in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment Plan Sponsor's Common Stock Common stock - Eastman Chemical Company EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] EBP, Schedule of Allocation, Asset and Liability [Abstract] Employer contribution, participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage Employer contribution, RSC annual contribution percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Schedule of Investments by Type EBP, Investments by Type [Table Text Block] EBP, Investments by Type Number of shares sold (in shares) EBP, Investment, Sold, Number of Shares Plan sponsor contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase (decrease) in net assets EBP, Change in Net Asset Available for Benefit, Increase (Decrease) PARTIES-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Plan sponsor contributions EBP, Employer Contribution, Receivable Participant contribution, automatic deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Distributions to and withdrawals by participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Dividends EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] DIVERSIFICATION FROM ESOP FUND EBP, Diversification of Investments [Text Block] EBP, Diversification of Investments INVESTMENTS EBP, Investments [Text Block] EBP, Investments EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Schedule of Allocation, Asset and Liability [Table] EBP, Schedule of Allocation, Asset and Liability [Table] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] Other liabilities EBP, Other Liability Participant Loans EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Hardship withdrawal, minimum EBP, Participant Hardship Withdrawal, Minimum Amount EBP, Participant Hardship Withdrawal, Minimum Amount Investment Policy and Valuation EBP, Investment [Policy Text Block] Document Type Document Type Employer contribution, participant compensation matched, percentage, collective bargaining agreement EBP, Employer Contribution, Participant Compensation Matched, Percentage, Collective Bargaining Agreement EBP, Employer Contribution, Participant Compensation Matched, Percentage, Collective Bargaining Agreement PLAN TERMINATION EBP, Plan Termination [Text Block] OTHER RECEIVABLES AND OTHER LIABILITIES EBP, Other Assets and Other Liabilities [Text Block] EBP, Other Assets and Other Liabilities Entity Central Index Key Entity Central Index Key Employer contribution, matching percentage, collective bargaining agreement EBP, Employer Contribution, Matching Percentage, Collective Bargaining Agreement EBP, Employer Contribution, Matching Percentage, Collective Bargaining Agreement Participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate Collective investment trusts Common Collective Trust [Member] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Risk and Uncertainty [Abstract] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] Cash and Cash Equivalents Cash and Cash Equivalents [Member] Deductions from net assets EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeitures applied to reduce Company contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SUMMARY OF ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name EBP, Schedule of Allocation, Asset and Liability [Line Items] EBP, Schedule of Allocation, Asset and Liability [Line Items] Eastman ESOP Fund Eastman ESOP Fund [Member] Eastman ESOP Fund EBP, Subsequent Event [Abstract] Liabilities EBP, Liability [Abstract] SUBSEQUENT EVENTS EBP, Subsequent Event [Text Block] PLAN EXPENSES EBP, Plan Expenses [Text Block] EBP, Plan Expenses Historical Cost EBP, Investment, Excluding Plan Interest in Master Trust, Cost FEDERAL INCOME TAX STATUS EBP, Tax Status [Text Block] Note receivable from participant, maximum borrowing of non-forfeitable account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Concentration of investment at fair value to total investments, percentage EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Total Investments, Percentage EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] Document Information [Table] Document Information [Table] Non-participant Directed EBP, Nonparticipant-Directed [Member] Net investment gain (loss) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Number of shares purchased, price per share (in dollars per share) EBP, Investment, Purchased, Price Per Share EBP, Investment, Purchased, Price Per Share EBP 002 EBP 002 [Member] EBP 002 Other receivables EBP, Other Receivable Net assets available for benefits Net assets available for benefits at beginning of year Net assets available for benefits at end of year EBP, Net Asset Available for Benefit Total investments Total investments EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value Entity [Domain] Entity [Domain] Investments at contract value EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Employer contribution, matching percentage EBP, Employer Contribution, Matching Percentage Forfeiture account EBP, Forfeited Nonvested Account Note receivable from participant, maximum borrowing term EBP, Note Receivable from Participant, Account, Maximum Borrowing Term EBP, Note Receivable from Participant, Account, Maximum Borrowing Term EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]