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Per Share Data (Tables) | 12 Months Ended
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Dec. 31, 2014
Earnings Per Share [Abstract] |
Calculation Of Basic And Diluted Earnings Per Share | The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:
|  | Year Ended December 31,
(in thousands, except per share amounts) |  | 2014 |  | 2013 |  | 2012
Earnings per common share calculation – basic |  |  |  |  |  |
Income from continuing operations attributable to common shareholders |  | $ | 292,089 |  |  | $ | 151,594 |  |  | $ | 154,116 |
Amount allocated to participating securities |  | (2,687 | ) |  | (3,177 | ) |  | (2,784 | )
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities |  | $ | 289,402 |  |  | $ | 148,417 |  |  | $ | 151,332 |
Discontinued operations, including gain on sale, attributable to common shareholders |  | — |  |  | 184,770 |  |  | 129,274 |
Net income attributable to common shareholders – basic |  | $ | 289,402 |  |  | $ | 333,187 |  |  | $ | 280,606 |
Earnings per common share from continuing operations |  | $ | 3.29 |  |  | $ | 1.70 |  |  | $ | 1.81 |
Earnings per common share from discontinued operations |  | — |  |  | 2.12 |  |  | 1.54 |
Total earnings per common share – basic |  | $ | 3.29 |  |  | $ | 3.82 |  |  | $ | 3.35 |
Weighted average number of common shares outstanding – basic |  | 88,084 |  |  | 87,204 |  |  | 83,772 |
|  | Year Ended December 31,
(in thousands, except per share amounts) |  | 2014 |  | 2013 |  | 2012
Earnings per common share calculation – diluted |  |  |  |  |  |
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities |  | $ | 289,402 |  |  | $ | 148,417 |  |  | $ | 151,332 |
Income allocated to common units from continuing operations |  | — |  |  | 1,133 |  |  | 1,984 |
Income from continuing operations attributable to common shareholders, as adjusted |  | $ | 289,402 |  |  | $ | 149,550 |  |  | $ | 153,316 |
Discontinued operations, including gain on sale, attributable to common shareholders |  | — |  |  | 184,770 |  |  | 129,274 |
Net income attributable to common shareholders – diluted |  | $ | 289,402 |  |  | $ | 334,320 |  |  | $ | 282,590 |
Earnings per common share from continuing operations |  | $ | 3.27 |  |  | $ | 1.69 |  |  | $ | 1.79 |
Earnings per common share from discontinued operations |  | — |  |  | 2.09 |  |  | 1.51 |
Total earnings per common share – diluted |  | $ | 3.27 |  |  | $ | 3.78 |  |  | $ | 3.30 |
Weighted average number of common shares outstanding – basic |  | 88,084 |  |  | 87,204 |  |  | 83,772 |
Incremental shares issuable from assumed conversion of: |  |  |  |  |  |
Common share options and share awards granted |  | 384 |  |  | 476 |  |  | 647 |
Common units |  | — |  |  | 814 |  |  | 1,137 |
Weighted average number of common shares outstanding – diluted |  | 88,468 |  |  | 88,494 |  |  | 85,556 |

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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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