STOCK REPURCHASE PROGRAM - Narratives (Detail) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Nov. 30, 2025 |
Jan. 27, 2022 |
Nov. 08, 2017 |
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| Shareholders Equity [Line Items] | ||||||
| Common stock, authorized (in shares) | 224,400,000 | 224,400,000 | ||||
| Common stock, par or stated value (in usd per share) | $ 0.01 | $ 0.01 | ||||
| Preferred stock, shares authorized | 149,600,000 | |||||
| Preferred stock, par value | $ 0.01 | |||||
| Common stock, issued (in shares) | 62,984,285 | 62,465,317 | ||||
| Treasury stock, common (in shares) | 8,406,114 | 6,089,675 | ||||
| Preferred stock, shares outstanding | 0 | 0 | ||||
| Stock Repurchase Program, Authorized Amount | $ 2,200 | $ 650 | ||||
| Treasury Stock Acquired, Average Cost Per Share | $ 1,187.21 | |||||
| Payments for Repurchase of Common Stock | $ 2,750 | $ 500 | $ 0 | |||
| Shares repurchased under the program | 2,316,439 | |||||
| Share Repurchase Program, Increase In Authorized Amount | $ 5,000 | |||||
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 3,038 | |||||
| X | ||||||||||
- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Share Repurchase Program, Increase In Authorized Amount No definition available.
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- Definition Shareholders Equity [Line Items] No definition available.
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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 Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash outflow to reacquire common stock during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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 Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. No definition available.
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- Definition Number of previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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