Revenues - Additional Information (Details) $ in Millions	3 Months Ended
Dec. 29, 2018 USD ($)
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 378
Revenue, Remaining Performance Obligation, Amount	13,300
Contract with Customer, Liability, Revenue Recognized	1,600
Unsatisfied performance obligation recognized in fiscal 2019
Revenue, Remaining Performance Obligation, Amount	4,200
Unsatisfied performance obligation recognized in fiscal 2020
Revenue, Remaining Performance Obligation, Amount	3,600
Unsatisfied performance obligation recognized in fiscal 2021
Revenue, Remaining Performance Obligation, Amount	2,300
Unsatisfied performance obligation recognized thereafter
Revenue, Remaining Performance Obligation, Amount	3,300
Accounting Standards Update 2014-09
Adoption of new accounting guidance	116
Contract with Customer, Asset, Accumulated Allowance for Credit Loss	163
Customer Advances and Deposits	$ 739

Amount of accumulated credit loss for right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
-Section 50
-Paragraph 8
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Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12A
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- Definition

Refundable consideration, usually cash, held by the entity pending satisfactory completion of the entity's obligations or pending the closing of a contract.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15a)
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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

+ References

No definition available.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
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