Intangible Assets - Reconciliation of Goodwill by Business Segment (Detail) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,090	$ 1,109
Acquisitions	6,716	13
Currency translation/other	(269)	(32)
Goodwill, ending balance	7,537	1,090
Medical
Goodwill [Roll Forward]
Goodwill, beginning balance	482	511
Acquisitions	6,585	0
Currency translation/other	(261)	(29)
Goodwill, ending balance	6,807	482
Medical \| Series of Individually Immaterial Business Acquisitions
Goodwill [Roll Forward]
Acquisitions	22
Life Sciences
Goodwill [Roll Forward]
Goodwill, beginning balance	608	598
Acquisitions	130	13
Currency translation/other	(8)	(3)
Goodwill, ending balance	$ 730	$ 608

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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 45

-Paragraph 1

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- Definition

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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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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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- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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