Employee Stock and Benefit Plans (RSU Transactions) (Details) - Restricted Stock Units (RSUs) [Member] - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Sep. 30, 2018	Oct. 01, 2017	Oct. 02, 2016
Nonvested, Number of Shares
Nonvested, September 27, 2015, Number of Shares	7.6
Granted, Number of Shares	9.5
Vested, Number of Shares	(3.3)
Forfeited/canceled, Number of Shares	(2.6)
Nonvested, October 2, 2016, Number of Shares	11.2	7.6
Weighted Average Grant Date Fair Value per Share
Nonvested, September 27, 2015, Weighted Average Grant Date Fair Value per Share	$ 52.06
Granted, Weighted Average Grant Date Fair Value per Share	56,480,000.00	$ 54.30	$ 58.81
Vested, Weighted Average Grant Date Fair Value per Share	50,180,000.00
Forfeited/canceled, Weighted Average Grant Date Fair Value per Share	54,870,000.00
Nonvested, October 2, 2016, Weighted Average Grant Date Fair Value per Share	$ 55,620,000.00	$ 52.06
Additional Disclosures
Nonvested, Weighted Average Remaining Contractual Life (Years)	1 year 8 days	10 months 24 days
Nonvested, Aggregate Intrinsic Value	$ 636	$ 410

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 718
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-Section 50
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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options.

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No definition available.

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