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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
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 September 30, |  |  |  | Nine Months Ended September 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Net earnings | $ | 200,300 |  |  | $ | 206,006 |  |  | $ | 501,345 |  |  | $ | 509,796 |
Basic earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 1.39 |  |  | $ | 1.42 |  |  | $ | 3.48 |  |  | $ | 3.51 |
Weighted average shares outstanding | 144,032,000 |  |  | 145,372,000 |  |  | 144,082,000 |  |  | 145,276,000 |
Diluted earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 1.38 |  |  | $ | 1.40 |  |  | $ | 3.45 |  |  | $ | 3.47 |
Weighted average shares outstanding | 145,289,000 |  |  | 147,051,000 |  |  | 145,313,000 |  |  | 147,053,000 |
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 September 30, |  |  |  | Nine Months Ended September 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Weighted average shares outstanding - Basic | 144,032,000 |  |  | 145,372,000 |  |  | 144,082,000 |  |  | 145,276,000 |
Dilutive effect of assumed exercise of SARs and vesting of performance shares and RSUs | 1,257,000 |  |  | 1,679,000 |  |  | 1,231,000 |  |  | 1,777,000 |
Weighted average shares outstanding - Diluted | 145,289,000 |  |  | 147,051,000 |  |  | 145,313,000 |  |  | 147,053,000 |

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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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