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Cover Page
3 Months Ended
Mar. 31, 2020
shares
Entity Information [Line Items]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2020
Document Transition Report false
Entity File Number 1-12626
Entity Registrant Name EASTMAN CHEMICAL CO
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 62-1539359
Entity Address, Address Line One 200 South Wilcox Drive
Entity Address, City or Town Kingsport
Entity Address, State or Province TN
Entity Address, Postal Zip Code 37662
City Area Code 423
Local Phone Number 229-2000
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 135,894,258
Entity Central Index Key 0000915389
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2020
Document Fiscal Period Focus Q1
Common Stock [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol EMN
Security Exchange Name NYSE
1.5% notes due May 2023 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security 1.50% Notes Due 2023
Trading Symbol EMN23
Security Exchange Name NYSE
1.875% notes due November 2026 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security 1.875% Notes Due 2026
Trading Symbol EMN26
Security Exchange Name NYSE