Fair value portion of investments accounted under the cost method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=75030709&loc=d3e39828-111592

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

+ References

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 35
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=82895926&loc=d3e25351-111560

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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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.

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Fair Value Measurements (Narrative) (Details) - USD ($)	12 Months Ended
Fair Value Measurements (Narrative) (Details) - USD ($)	Oct. 29, 2017	Oct. 30, 2016	Oct. 25, 2015
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Fair value of transfers from Level 1 to Level 2	$ 0	$ 0
Fair value of transfers from Level 2 to Level 1	0	0
Equity investments in privately-held companies
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Impairments of investments	10,000,000	8,000,000	$ 9,000,000
Reported Value Measurement
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt value	5,300,000,000	3,100,000,000
Reported Value Measurement \| Short Term And Long Term Investments \| Equity investments in privately-held companies
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	74,000,000	70,000,000
Portion at Other than Fair Value Measurement \| Short Term And Long Term Investments \| Equity investments in privately-held companies
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	65,000,000	62,000,000
Estimate of Fair Value Measurement \| Level 2
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt value	5,800,000,000	3,500,000,000
Estimate of Fair Value Measurement \| Short Term And Long Term Investments \| Equity investments in privately-held companies \| Fair Value, Measurements, Nonrecurring \| Level 3
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	$ 9,000,000	$ 8,000,000