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Weighted Average Common Shares (Tables) | 12 Months Ended
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Sep. 30, 2019
Weighted Average Number of Shares Outstanding, Diluted [Abstract] |
Schedule Of Basic And Diluted Earnings Per Common Share Reconciliation | Reconciliations of weighted-average shares for basic and diluted earnings per common share follow (shares in millions):
| 2017 |  |  | 2018 |  |  | 2019 |
Basic shares outstanding | 642.1 |  |  | 632.0 |  |  | 616.2 |
Dilutive shares | 1.3 |  |  | 3.3 |  |  | 4.4 |
Diluted shares outstanding | 643.4 |  |  | 635.3 |  |  | 620.6 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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