Segment Data - Additional Information (Details) $ in Millions	12 Months Ended
Sep. 30, 2024 USD ($) segment customer	Sep. 30, 2023 USD ($) customer	Sep. 30, 2022 USD ($) customer
Segment Reporting Information [Line Items]
Number of principal business segments (segments) \| segment	3
Number of customers accounted for 10% or more of revenues (customers) \| customer	0	0	0
Product remediation-related charges	$ 38	$ 653	$ 72
Gain (loss) on disposition of business	0	268	0
Surgical Instrumentation
Segment Reporting Information [Line Items]
Gain (loss) on disposition of business		268
SEC Matter
Segment Reporting Information [Line Items]
Loss contingency accrual	175
Cost of products sold \| Medical
Segment Reporting Information [Line Items]
Product remediation-related charges	$ 38	$ 653	72
Asset impairment charges			$ 54

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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