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EARNINGS AND DIVIDENDS PER SHARE | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
EARNINGS AND DIVIDENDS PER SHARE | EARNINGS AND DIVIDENDS PER SHARE The following table sets forth the computation of basic and diluted earnings per share ("EPS"):
| Second Quarter |  | First Six Months
(In millions, except per share amounts) | 2018 |  | 2017 |  | 2018 |  | 2017
Numerator |  |  |  |  |  |  |
Earnings attributable to Eastman, net of tax | $ | 344 |  |  | $ | 292 |  |  | $ | 634 |  |  | $ | 570 |
Denominator |  |  |  |  |  |  |
Weighted average shares used for basic EPS | 141.9 |  |  | 145.3 |  |  | 142.3 |  |  | 145.7 |
Dilutive effect of stock options and other awards | 2.1 |  |  | 1.1 |  |  | 2.1 |  |  | 1.1 |
Weighted average shares used for diluted EPS | 144.0 |  |  | 146.4 |  |  | 144.4 |  |  | 146.8 |
(Calculated using whole dollars and shares) |  |  |  |  |  |  |
EPS |  |  |  |  |  |  |
Basic | $ | 2.42 |  |  | $ | 2.01 |  |  | $ | 4.45 |  |  | $ | 3.91 |
Diluted | $ | 2.39 |  |  | $ | 2.00 |  |  | $ | 4.39 |  |  | $ | 3.89 |
In both second quarter and first six months 2018, options to purchase 407,573 shares of common stock were excluded from the shares treated as outstanding for computation of diluted EPS because the market value of option exercises for these awards were less than the cash proceeds that would be received from these exercises. Second quarter and first six months 2018 reflect the impact of share repurchases of 1,415,539 and 2,409,774, respectively. In second quarter and first six months 2017, options to purchase 850,970 and 1,008,667 shares of common stock, respectively, were excluded from the shares treated as outstanding for computation of diluted EPS because the market value of option exercises for these awards were less than the cash proceeds that would be received from these exercises. Second quarter and first six months 2017 reflect the impact of share repurchases of 1,232,977 and 2,176,676, respectively. The Company declared cash dividends of $0.56 and $0.51 per share in second quarter 2018 and 2017, respectively, and $1.12 and $1.02 per share in first six months 2018 and 2017, respectively.

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