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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Reconciliation of information used in computing basic and diluted earnings per share | The following table sets forth a reconciliation of the information used in computing basic and diluted earnings per share:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net earnings | $ | 264,508 |  |  | $ | 124,766 |  |  | $ | 497,277 |  |  | $ | 301,045 |
Basic earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 1.84 |  |  | $ | 0.87 |  |  | $ | 3.46 |  |  | $ | 2.09 |
Weighted average shares outstanding | 143,941,000 |  |  | 143,955,000 |  |  | 143,854,000 |  |  | 144,107,000 |
Diluted earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 1.82 |  |  | $ | 0.86 |  |  | $ | 3.43 |  |  | $ | 2.07 |
Weighted average shares outstanding | 145,118,000 |  |  | 144,995,000 |  |  | 145,040,000 |  |  | 145,359,000 |
Reconciliation of share amounts used in computing earnings per share | The following table is a reconciliation of the share amounts used in computing earnings per share:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Weighted average shares outstanding - Basic | 143,941,000 |  |  | 143,955,000 |  |  | 143,854,000 |  |  | 144,107,000 |
Dilutive effect of assumed exercise of SARs and vesting of performance shares and RSUs | 1,177,000 |  |  | 1,040,000 |  |  | 1,186,000 |  |  | 1,252,000 |
Weighted average shares outstanding - Diluted | 145,118,000 |  |  | 144,995,000 |  |  | 145,040,000 |  |  | 145,359,000 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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 http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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