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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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The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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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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The amount of loss reported during the period pertaining to product liability.

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Segment Data - Additional Information (Detail) $ in Millions	12 Months Ended
	Sep. 30, 2019 USD ($) customer segment	Sep. 30, 2018 USD ($) customer	Sep. 30, 2017 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
Inventory Recall Expense	$ 75
Gain (Loss) on Disposition of Business	336	$ 0	$ 0
Gain on Sale of Investments	0	303	0
Lease Contract Modification Related Charge	0	0	748
Advanced Bioprocessing
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Business	336
CR Bard Inc
Segment Reporting Information [Line Items]
Recognition Of Fair Value Adjustment To Inventory Acquired		478
Medical
Segment Reporting Information [Line Items]
AllocatedCosts			166
Asset Impairment Charges		58
Medical \| CR Bard Inc
Segment Reporting Information [Line Items]
Recognition Of Fair Value Adjustment To Inventory Acquired		60
Life Sciences
Segment Reporting Information [Line Items]
AllocatedCosts			$ 113
Impairment of Intangible Assets (Excluding Goodwill)		81
Interventional
Segment Reporting Information [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	30
Interventional \| CR Bard Inc
Segment Reporting Information [Line Items]
Recognition Of Fair Value Adjustment To Inventory Acquired		$ 418
Other Operating Income (Expense)
Segment Reporting Information [Line Items]
Product Liability Accrual, Period Expense	$ 914