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Share-Based Compensation - Additional Information (Detail) - USD ($) shares in Thousands, $ in Millions | 12 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 240 | $ 238 | $ 245
SARs vesting period | 4 years |  |
SARs terms of award | 10 years |  |
Stock Issued under SARs exercised (in shares) | 700 |  |
Percentage Of Target Payout On Which Performance Based Restricted Stock Units Are Based | 200.00% |  |
Percentage of Target Payout on which Performance Based Time-vested Restricted Stock Units are Based | 100.00% |  |
Expected forfeited performance-based restricted stock units (shares) | 65 |  |
Units In Excess Of Expected Performance Payout | 386 |  |
Unrecognized compensation expense for all non-vested share-based awards | $ 253 |  |
Weighted-average remaining life non-vested share-based awards | 1 year 10 months 24 days |  |
Shares were authorized for future grants | 7,200 |  |
Shares issuable under deferred compensation plan | 231 |  |
Director |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferral plan, shares held in trust | 101 |  |
Performance-Based Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock units vesting period | 3 years |  |
Performance period | 3 years |  |
Weighted average remaining vesting term | 1 year 2 months 23 days |  |
Performance-Based Restricted Stock Units | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance payout, percent | 0.00% |  |
Performance-Based Restricted Stock Units | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance payout, percent | 200.00% |  |
Time-Vested Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock units vesting period | 3 years |  |
Weighted average remaining vesting term | 10 months 24 days |  |
Time-Vested Restricted Stock Units | Executive Officer |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock units vesting period | 1 year |  |
Acquisitions and other restructurings |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense | $ 1 | $ 1 | 20
Acquisitions and other restructurings | CR Bard Inc |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Expense |  |  | $ 16

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- Definition Description of the period of time over which an employee's right to exercise an stock appreciation right is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year). + References No definition available. + Details
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- Definition The date when stock appreciation rights expire as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). + References No definition available. + Details
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- Definition Number of shares issuable under the Company's Deferred Compensation Plan that allows highly-compensated employees to defer salary, annual incentive awards and certain equity-based compensation. + References No definition available. + Details
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