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Earnings and Dividends per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings and Dividends Per Share [Abstract] |
Schedule Of Net Income Attributable To Common Stockholders | Diluted earnings per share include the effects of certain stock options and performance stock units.
|  |  |  | Three Months Ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Net income attributable to Westlake Corporation |  |  |  |  |  | $ | 394 |  |  | $ | 756 |
Less: |  |  |  |  |  |  |  |
Net income attributable to participating securities |  |  |  |  |  | (2) |  |  | (4) |
Net income attributable to common shareholders |  |  |  |  |  | $ | 392 |  |  | $ | 752 |
Reconciliation Of Denominator For Basic And Diluted Earnings Per Share | The following table reconciles the denominator for the basic and diluted earnings per share computations shown in the consolidated statements of operations:
|  |  |  | Three Months Ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Weighted average common shares—basic |  |  |  |  |  | 127,548,287 |  |  | 128,071,355 |
Plus incremental shares from: |  |  |  |  |  |  |  |
Assumed exercise of options and vesting of performance stock units |  |  |  |  |  | 911,081 |  |  | 853,744 |
Weighted average common shares—diluted |  |  |  |  |  | 128,459,368 |  |  | 128,925,099 |
Earnings per common share attributable to Westlake Corporation: |  |  |  |  |  |  |  |
Basic |  |  |  |  |  | $ | 3.07 |  |  | $ | 5.87 |
Diluted |  |  |  |  |  | $ | 3.05 |  |  | $ | 5.83 |
Dividends Per Share | Dividends per Share Dividends declared per common share for the three months ended March 31, 2023 and 2022 were as follows:
|  |  |  | Three Months Ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Dividends per common share |  |  |  |  |  | $ | 0.3570 |  |  | $ | 0.2975 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Schedule of net income (loss) attributable to common stockholders [Table Text Block] + References No definition available. + Details
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