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Earnings Per Share (Tables) | 6 Months Ended
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Mar. 31, 2019
Earnings Per Share |
Reconciliation of the denominators for basic and diluted EPS |
|  | Three Months Ended |  | Six Months Ended
|  | March 31, |  | March 31, |  | March 31, |  | March 31,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
|  | (in millions)
Denominator for basic earnings per share |  | 156.6 |  | 159.5 |  | 156.5 |  | 158.7
Potential common shares |  | 1.8 |  | — |  | 2.5 |  | —
Denominator for diluted earnings per share |  | 158.4 |  | 159.5 |  | 159.0 |  | 158.7

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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://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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