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EARNINGS AND DIVIDENDS PER SHARE (Tables)
6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Earnings per share, basic and diluted
The following table sets forth the computation of basic and diluted earnings per share ("EPS") which are calculated using the treasury stock method:
 Second QuarterFirst Six Months
(In millions, except per share amounts)2024202320242023
Numerator
Earnings attributable to Eastman, net of tax $230 $272 $395 $406 
Denominator
Weighted average shares used for basic EPS117.3118.8117.4118.9
Dilutive effect of stock options and other awards1.30.81.10.7
Weighted average shares used for diluted EPS118.6119.6118.5119.6
(Calculated using whole dollars and shares)
EPS
Basic$1.96 $2.28 $3.37 $3.41 
Diluted$1.94 $2.27 $3.33 $3.39