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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Jun. 30, 2018
Accounting Policies [Abstract] |
Computation of Basic and Diluted Earnings Per Share | The following table shows the computation of basic and diluted earnings per share for the three- and nine-month periods ended June 30, 2018 and July 1, 2017 (net income in millions and shares in thousands):
| Three Months Ended |  | Nine Months Ended
| June 30, 2018 |  | July 1, 2017 |  | June 30, 2018 |  | July 1, 2017
Numerator: |  |  |  |  |  |  |
Net income | $ | 11,519 |  |  | $ | 8,717 |  |  | $ | 45,406 |  |  | $ | 37,637 |
Denominator: |  |  |  |  |  |  |
Weighted-average basic shares outstanding | 4,882,167 |  |  | 5,195,088 |  |  | 5,006,640 |  |  | 5,239,847 |
Effect of dilutive securities | 44,442 |  |  | 38,411 |  |  | 44,323 |  |  | 34,547 |
Weighted-average diluted shares | 4,926,609 |  |  | 5,233,499 |  |  | 5,050,963 |  |  | 5,274,394 |
Basic earnings per share | $ | 2.36 |  |  | $ | 1.68 |  |  | $ | 9.07 |  |  | $ | 7.18 |
Diluted earnings per share | $ | 2.34 |  |  | $ | 1.67 |  |  | $ | 8.99 |  |  | $ | 7.14 |

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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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