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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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Significant Accounting Policies and Recent Accounting Standards - Adoption of New Accounting Standards (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Jun. 29, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating income	$ 272	$ 246
Adjustments for New Accounting Pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in prepaid income tax asset reclassified to beginning retained earnings	27
Increase in non-current deferred income taxes reclassified to beginning retained earnings	$ 27
Adjustments for New Accounting Pronouncements \| Pro Forma
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating income				$ 164
Adjustments for New Accounting Pronouncements \| Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating income			$ 183