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Per Share Data (Calculation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Earnings Per Share [Abstract] |  |
Number of common share equivalent securities excluded from the diluted earnings per share calculation | 3,000,000 | 1,400,000
Income from continuing operations attributable to common shareholders | $ 30,985 | $ 53,958
Amount allocated to participating securities | (638) | (890)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities | 30,347 | 53,068
Income from discontinued operations, including gain on sale, attributable to common shareholders | 32,491 | 34,800
Net income attributable to common shareholders, as adjusted | 62,838 | 87,868
Income from continuing operations attributable to common shareholders, as adjusted - per share | $ 0.35 | $ 0.66
Income from discontinued operations, including gain on sale, attributable to common shareholders | $ 0.37 | $ 0.44
Net income attributable to common shareholders, as adjusted - per share | $ 0.72 | $ 1.10
Weighted average number of common shares outstanding - basic | 86,703,000 | 79,885,000
Income allocated to common units from continuing operations | 0 | 639
Income from continuing operations attributable to common shareholders, as adjusted | 30,347 | 53,707
Net income attributable to common shareholders, as adjusted | $ 62,838 | $ 88,507
Income from continuing operations attributable to common shareholders, as adjusted - per share | $ 0.35 | $ 0.65
Income from discontinued operations, including gain on sale, attributable to common shareholders - per share | $ 0.37 | $ 0.42
Net income attributable to common shareholders, as adjusted - per share | $ 0.72 | $ 1.07
Common share options and share awards granted | 573,000 | 679,000
Common units | 0 | 2,291,000
Weighted average number of common shares outstanding - diluted | 87,276,000 | 82,855,000

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- Definition This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any, less the earnings allocated (not distributed) to participating securities under the two-class method to the extent that participating securities may share in earnings as if all of the earnings for the period had been distributed. + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 13, 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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