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Income Tax (Tables) | 9 Months Ended
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Jun. 30, 2025
Income Tax Disclosure [Abstract] |
Effective Tax Rate | Effective Tax Rate
|  | Three Months Ended June 30 |  |  | Nine Months Ended June 30 |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
|  | (Dollars in millions) |
(Provision) benefit for income taxes |  | $ | (43 | ) |  | $ | (40 | ) |  | $ | (133 | ) |  | $ | (121 | )
Effective tax rate |  |  | 28 | % |  |  | 25 | % |  |  | 29 | % |  |  | 31 | %

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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