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Selected Quarterly Results of Operations (Unaudited) (Tables) | 12 Months Ended
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Sep. 30, 2015
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Results of Operations | The following are details of the unaudited quarterly results of operations for the three months ended:
|  | September 30, |  |  | June 30, |  |  | March 31, |  |  | December 31, |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 926,776 |  |  | $ | 907,897 |  |  | $ | 902,578 |  |  | $ | 906,287 |
Operating income |  |  | 109,700 |  |  |  | 126,727 |  |  |  | 138,000 |  |  |  | 141,521 |
Net income |  |  | 91,130 |  |  |  | 107,782 |  |  |  | 116,261 |  |  |  | 130,990 |
Basic earnings per share |  |  | 0.60 |  |  |  | 0.70 |  |  |  | 0.75 |  |  |  | 0.84 |
Diluted earnings per share |  |  | 0.59 |  |  |  | 0.69 |  |  |  | 0.74 |  |  |  | 0.83 |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 900,261 |  |  | $ | 902,477 |  |  | $ | 896,854 |  |  | $ | 864,045 |
Operating income |  |  | 126,107 |  |  |  | 125,003 |  |  |  | 123,848 |  |  |  | 120,690 |
Net income |  |  | 100,503 |  |  |  | 109,827 |  |  |  | 110,357 |  |  |  | 101,435 |
Basic earnings per share |  |  | 0.64 |  |  |  | 0.69 |  |  |  | 0.69 |  |  |  | 0.64 |
Diluted earnings per share |  |  | 0.63 |  |  |  | 0.68 |  |  |  | 0.68 |  |  |  | 0.63 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306 + Details
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