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Per Share Information (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Basic and Diluted Earnings Per Share Attributable to Common Stock | The amounts used to compute basic and diluted earnings per share attributable to common stock consisted of the following (in thousands):
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Amounts attributable to common stock: |  |  |  |  |  |  |  |
Net income attributable to common stock |  | $ | 174,365 |  |  | $ | 162,913 |  |  | $ | 381,159 |  |  | $ | 275,545 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |
Weighted average shares outstanding for basic earnings per share attributable to common stock |  | 140,008 |  |  | 140,542 |  |  | 140,134 |  |  | 141,610 |
Effect of dilutive unvested non-participating stock-based awards |  | 4,296 |  |  | 3,821 |  |  | 4,314 |  |  | 3,375 |
Weighted average shares outstanding for diluted earnings per share attributable to common stock |  | 144,304 |  |  | 144,363 |  |  | 144,448 |  |  | 144,985 |

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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=124432515&loc=d3e3550-109257 + Details
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