Supplemental Financial Statement Data - Total Warranty Accrual (Details) - USD ($) $ in Millions	Jan. 03, 2020	Oct. 04, 2019	Jun. 28, 2019	Dec. 28, 2018	Sep. 28, 2018	Jun. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Current portion (included in Accrued expenses)	$ 193		$ 188
Long-term portion (included in Other liabilities)	185		162
Total warranty accrual	$ 378	$ 357	$ 350	$ 337	$ 323	$ 318

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1),(c)(5)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

Name:	us-gaap_StandardProductWarrantyAccrual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant