Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the 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 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Name:	us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Intangible Assets Intangible Assets - Reconciliation of Goodwill by Business Segment Footnote (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Oct. 03, 2016
Goodwill [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 4	$ (78)
Medical
Goodwill [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 4	(79)
Care Fusion Corporation \| Medical
Goodwill [Line Items]
Goodwill, Purchase Accounting Adjustments		$ 94
Respiratory Solutions \| Disposal Group, Held-for-sale, Not Discontinued Operations
Goodwill [Line Items]
Disposal Group, Including Discontinued Operation, Percent Of Business Sold			50.10%