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Per Share Information (Tables) | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Basic and Diluted Earnings Per Share | The amounts used to compute the basic and diluted earnings per share for the three and nine months ended September 30, 2014 and 2013 are illustrated below (in thousands):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Amounts attributable to common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to common stock |  | $ | 94,648 |  |  | $ | 92,906 |  |  | $ | 230,138 |  |  | $ | 235,224 |
Weighted average shares: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding for basic earnings per share |  |  | 219,492 |  |  |  | 214,866 |  |  |  | 219,395 |  |  |  | 214,178 |
Effect of dilutive stock options |  |  | 25 |  |  |  | 50 |  |  |  | 25 |  |  |  | 51 |
Weighted average shares outstanding for diluted earnings per share |  |  | 219,517 |  |  |  | 214,916 |  |  |  | 219,420 |  |  |  | 214,229 |

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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/2003/role/presentationRef -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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