Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 27, 2015	Sep. 27, 2015	Jul. 03, 2016	Sep. 28, 2014
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Total	$ 250	$ 250	$ 389	$ 738
Fair Value, Measurements, Recurring [Member] \| Level 1 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Total	32	32	165	50
Fair Value, Measurements, Recurring [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Total	218	218	224	688
Fair Value, Measurements, Recurring [Member] \| Money Market Funds [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents	32	32	165	46
Fair Value, Measurements, Recurring [Member] \| Money Market Funds [Member] \| Level 1 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents	32	32	165	46
Fair Value, Measurements, Recurring [Member] \| US Treasury Bill Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents				4
Fair Value, Measurements, Recurring [Member] \| US Treasury Bill Securities [Member] \| Level 1 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents				4
Fair Value, Measurements, Recurring [Member] \| Commercial Paper [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents			46	15
Marketable Securities - Available-for-sale				33
Fair Value, Measurements, Recurring [Member] \| Commercial Paper [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents			46	15
Marketable Securities - Available-for-sale				33
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	13	13		13
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	13	13		13
Fair Value, Measurements, Recurring [Member] \| Certificates of Deposit [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	2	2
Fair Value, Measurements, Recurring [Member] \| Certificates of Deposit [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	2	2
Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	30	30		97
Fair Value, Measurements, Recurring [Member] \| Corporate Debt Securities [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Marketable Securities - Available-for-sale	30	30		97
Fair Value, Measurements, Recurring [Member] \| Municipal Notes Bonds [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents			18
Marketable Securities - Available-for-sale	173	173	153	530
Fair Value, Measurements, Recurring [Member] \| Municipal Notes Bonds [Member] \| Level 2 Inputs [Member]
Assets, Fair Value Disclosure [Abstract]
Cash Equivalents			18
Marketable Securities - Available-for-sale	173	173	$ 153	$ 530
Fair Value, Measurements, Nonrecurring [Member] \| Selling, General and Administrative Expenses [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets, on a Nonrecurring Basis	$ 46	$ 46