Shareowners' Equity - Common Stock (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2024 |
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| Equity [Abstract] | |||
| Common stock, authorized (in shares) | 1,000,000,000 | ||
| Common stock, par value (in dollars per share) | $ 1.00 | $ 1.00 | |
| Preferred stock, authorized (in shares) | 25,000,000 | ||
| Common stock reserved for various incentive plans (in shares) | 14,600,000 | ||
| Outstanding purchase of common stock recorded in accounts payable | $ 0 | $ 1,000,000 | |
| Changes in outstanding common shares | |||
| Beginning balance (in shares) | 112,400,000 | 113,100,000 | 114,800,000 |
| Treasury stock purchases (in shares) | (3,100,000) | (1,500,000) | (2,200,000) |
| Common stock issued (including share based compensation impact) (in shares) | 600,000 | 800,000 | 500,000 |
| Ending balance (in shares) | 109,900,000 | 112,400,000 | 113,100,000 |
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- Definition This element represents the value of stock that has been repurchased during the period but did not settle until after the period end. No definition available.
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- Definition Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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