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QUARTERLY SALES AND EARNINGS DATA-UNAUDITED QUARTERLY SALES AND EARNINGS DATA-UNAUDITED (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Quarterly Financial Data [Abstract]                      
Sales $ 2,362 $ 2,465 $ 2,419 $ 2,303 $ 2,188 $ 2,287 $ 2,297 $ 2,236      
Gross profit 487 691 651 625 490 621 605 634 $ 2,454 $ 2,350 $ 2,580
Asset impairments and restructuring charges (gains), net 8 0 0 0 17 30 0 (2) 8 45 183
Net earnings attributable to Eastman $ 491 $ 323 $ 292 $ 278 $ 116 $ 232 $ 255 $ 251 $ 1,384 $ 854 $ 848
Earnings from continuing operations per share [Abstract]                      
Income (Loss) from Continuing Operations, Per Basic Share [1]                 $ 9.56 $ 5.80 $ 5.71
Income (Loss) from Continuing Operations, Per Diluted Share [1]                 9.47 5.75 5.66
Earnings Per Share [Abstract]                      
Basic earnings per share attributable to Eastman $ 3.42 [2] $ 2.24 [2] $ 2.01 [2] $ 1.90 [2] $ 0.79 [2] $ 1.57 [2] $ 1.73 [2] $ 1.70 [2] 9.56 5.80 5.71
Diluted earnings per share attributable to Eastman $ 3.39 [2] $ 2.22 [2] $ 2.00 [2] $ 1.89 [2] $ 0.79 [2] $ 1.56 [2] $ 1.71 [2] $ 1.69 [2] $ 9.47 $ 5.75 $ 5.66
[1] Earnings per share are calculated using whole dollars and shares.
[2] Each quarter is calculated as a discrete period; the sum of the four quarters may not equal the calculated full year amount.