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Earnings Per Share (Notes) | 12 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
| Year Ended September 30,
| 2021 |  | 2020 |  | 2019
Income Available to Ordinary Shareholders |  |  |  |  |
Income from continuing operations | $ | 1,513 |  |  | $ | 631 |  |  | $ | 1,100 |
Income from discontinued operations | 124 |  |  | — |  |  | 4,574 |
Basic and diluted income available to shareholders | $ | 1,637 |  |  | $ | 631 |  |  | $ | 5,674 |
Weighted Average Shares Outstanding |  |  |  |  |
Basic weighted average shares outstanding | 716.6 |  |  | 751.0 |  |  | 870.2 |
Effect of dilutive securities: |  |  |  |  |
Stock options, unvested restricted stock and unvested performance share awards | 4.5 |  |  | 2.6 |  |  | 4.1 |
Diluted weighted average shares outstanding | 721.1 |  |  | 753.6 |  |  | 874.3 |
Antidilutive Securities |  |  |  |  |
Options to purchase shares | — |  |  | 1.4 |  |  | 1.4 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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