Restructuring and Impairment Charges - Additional Details (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Restructuring and Related Activities [Abstract]
Restructuring and impairment charges	$ 13		$ 0	$ 28	$ 0
Other Income	$ 41	$ 53	$ 0	$ 94	$ 0

Amount of restructuring charges, remediation cost, and asset impairment loss.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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