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EARNINGS AND DIVIDENDS PER SHARE
 3 Months Ended
Mar. 31, 2024
Earnings Per Share [Abstract]  
Earnings Per Share EARNINGS AND DIVIDENDS PER SHARE
The following table sets forth the computation of basic and diluted earnings per share ("EPS") which are calculated using the treasury stock method:
 First Quarter
(In millions, except per share amounts)20242023
Numerator
Earnings attributable to Eastman, net of tax $165 $134 
Denominator
Weighted average shares used for basic EPS117.4118.9
Dilutive effect of stock options and other awards0.80.8
Weighted average shares used for diluted EPS118.2119.7
(Calculated using whole dollars and shares)
EPS
Basic$1.40 $1.13 
Diluted$1.39 $1.12 

Shares underlying stock options of 1,583,247 and 1,879,459 for first quarter 2024 and 2023, respectively, were excluded from the calculations of diluted EPS because the grant date exercise price of these options was greater than the average market price of the Company's common stock and the effect of including them in the calculations of diluted EPS would have been antidilutive. No shares were repurchased in first quarter 2024 or 2023.
The Company declared cash dividends of $0.81 and $0.79 per share for first quarter 2024 and 2023, respectively.