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Earnings Per Share | 6 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share We use the two-class method of computing earnings per share because we have participating securities in the form of non-vested restricted stock units with a nonforfeitable right to dividend equivalents, for which vesting is predicated solely on the passage of time. The calculation of earnings per share using the two-class method excludes income attributable to these participating securities from the numerator and excludes the dilutive impact of those shares from the denominator. Basic and diluted earnings per share for the three and six months ended March 31, 2018 and 2017 are calculated as follows:
| Three Months Ended March 31 |  | Six Months Ended March 31
| 2018 |  | 2017 |  | 2018 |  | 2017
| (In thousands, except per share amounts)
Basic and Diluted Earnings Per Share from continuing operations |  |  |  |  |  |  |
Income from continuing operations | $ | 178,992 |  |  | $ | 162,012 |  |  | $ | 493,124 |  |  | $ | 276,050 |
Less: Income from continuing operations allocated to participating securities | 161 |  |  | 193 |  |  | 459 |  |  | 348 |
Income from continuing operations available to common shareholders | $ | 178,831 |  |  | $ | 161,819 |  |  | $ | 492,665 |  |  | $ | 275,702 |
Basic and diluted weighted average shares outstanding | 111,706 |  |  | 105,935 |  |  | 110,135 |  |  | 105,610 |
Income from continuing operations per share — Basic and Diluted | $ | 1.60 |  |  | $ | 1.52 |  |  | $ | 4.47 |  |  | $ | 2.61 |
Basic and Diluted Earnings Per Share from discontinued operations |  |  |  |  |  |  |
Income from discontinued operations | $ | — |  |  | $ | 2,716 |  |  | $ | — |  |  | $ | 13,710 |
Less: Income from discontinued operations allocated to participating securities | — |  |  | 2 |  |  | — |  |  | 15 |
Income from discontinued operations available to common shareholders | $ | — |  |  | $ | 2,714 |  |  | $ | — |  |  | $ | 13,695 |
Basic and diluted weighted average shares outstanding | 111,706 |  |  | 105,935 |  |  | 110,135 |  |  | 105,610 |
Income from discontinued operations per share — Basic and Diluted | $ | — |  |  | $ | 0.03 |  |  | $ | — |  |  | $ | 0.13 |
Net income per share — Basic and Diluted | $ | 1.60 |  |  | $ | 1.55 |  |  | $ | 4.47 |  |  | $ | 2.74 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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