Fair value of level one and level two transfers amount.

No definition available.

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Namespace Prefix:	amat_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Fair value portion of investments accounted under the cost method.

+ References

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=29638263&loc=d3e39828-111592

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

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=31042434&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=27723805&loc=d3e25351-111560

+ Details

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Balance Type:	debit
Period Type:	duration

- 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

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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Fair Value Measurements (Narrative) (Details) (USD $)	12 Months Ended
Fair Value Measurements (Narrative) (Details) (USD $)	Oct. 26, 2014	Oct. 27, 2013	Oct. 28, 2012
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Fair value of level one and level two transfers amount	$ 0	$ 0
Fair Value, Measurements, Nonrecurring [Member] \| Level 3 [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	9,000,000	10,000,000
Equity Investments In Privately Held Companies [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Impairments of investments	15,000,000	6,000,000	17,000,000
Reported Value Measurement [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt, carrying value	1,900,000,000	1,900,000,000
Reported Value Measurement [Member] \| Short Term And Long Term Investments [Member] \| Equity Investments In Privately Held Companies [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	66,000,000	76,000,000
Portion at Other than Fair Value Measurement [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	57,000,000	66,000,000
Estimate of Fair Value Measurement [Member] \| Level 2 [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt, carrying value	$ 2,200,000,000	$ 2,100,000,000