Intangible Assets - Reconciliation of Goodwill by Business Segment (Detail) $ in Millions	6 Months Ended
Mar. 31, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill as of September 30, 2019	$ 23,376
Goodwill, Acquired During Period	68
Currency translation	(29)
Goodwill as of March 31, 2020	23,415
Medical
Goodwill [Roll Forward]
Goodwill as of September 30, 2019	9,989
Goodwill, Acquired During Period	10
Currency translation	(2)
Goodwill as of March 31, 2020	9,997
Life Sciences
Goodwill [Roll Forward]
Goodwill as of September 30, 2019	772
Goodwill, Acquired During Period	58
Currency translation	(1)
Goodwill as of March 31, 2020	828
Interventional
Goodwill [Roll Forward]
Goodwill as of September 30, 2019	12,615
Goodwill, Acquired During Period	0
Currency translation	(26)
Goodwill as of March 31, 2020	$ 12,589

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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