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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Calculation of Basic and Diluted Earning Per Share | Basic and diluted earnings per share for the three-month and nine-month periods ended September 30, 2018 and 2017 are calculated as follows (in thousands, except per share amounts):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Basic earnings per share |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income attributable to Albemarle Corporation | $ | 129,745 |  |  | $ | 118,670 |  |  | $ | 563,966 |  |  | $ | 273,216 |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares for basic earnings per share | 107,315 |  |  | 110,476 |  |  | 109,223 |  |  | 111,049 |
Basic earnings per share | $ | 1.21 |  |  | $ | 1.07 |  |  | $ | 5.16 |  |  | $ | 2.46 |
Diluted earnings per share |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income attributable to Albemarle Corporation | $ | 129,745 |  |  | $ | 118,670 |  |  | $ | 563,966 |  |  | $ | 273,216 |
Denominator: |  |  |  |  |  |  |
Weighted-average common shares for basic earnings per share | 107,315 |  |  | 110,476 |  |  | 109,223 |  |  | 111,049 |
Incremental shares under stock compensation plans | 987 |  |  | 1,499 |  |  | 1,053 |  |  | 1,407 |
Weighted-average common shares for diluted earnings per share | 108,302 |  |  | 111,975 |  |  | 110,276 |  |  | 112,456 |
Diluted earnings per share | $ | 1.20 |  |  | $ | 1.06 |  |  | $ | 5.11 |  |  | $ | 2.43 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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