Restructuring Charge - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Restructuring and Related Activities [Abstract] | ||
| Restructuring Charge | $ 61 | $ 91 |
| Restructuring charge after-tax | 46 | 69 |
| Severance | 47 | 58 |
| Accelerated vesting expense of deferred compensation awards | $ 14 | $ 33 |
| X | ||||||||||
- Definition Restructuring Charge Related to Accelerated Vesting of Previously Granted Deferred Compensation Awards No definition available.
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| X | ||||||||||
- Definition Restructuring charges net No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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