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Restructuring Reserve (Details) - Financial Fitness Program [Member] $ in Millions	12 Months Ended
	Sep. 29, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Liability as of September 30, 2017	$ 69
Restructuring Charges	0
Payments	58
Other	1
Liability as of September 29, 2018	10
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of September 30, 2017	47
Restructuring Charges	0
Payments	37
Other	0
Liability as of September 29, 2018	10
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of September 30, 2017	22
Restructuring Charges	0
Payments	21
Other	1
Liability as of September 29, 2018	$ 0

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
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-Section S99
-Paragraph 1
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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