Balance Sheet Detail - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 27, 2024	Oct. 29, 2023	Oct. 30, 2022
Balance Sheet Detail [Abstract]
Depreciation	$ 346	$ 471	$ 404
Government assistance, asset, decrease	$ 479
Government Assistance, Asset, Decrease, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net
Government assistance, operating expense, decrease	$ 38
Government Assistance, Operating Expense, Decrease (Increase), Statement of Income or Comprehensive Income [Extensible Enumeration]	Research and Development Expense
Government assistance, liability, decrease	$ 170
Government Assistance, Liability, Decrease, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued expenses, Deferred Income Taxes and Other Assets, Noncurrent
Government assistance, liability, decrease, current	$ 159
Government Assistance, Liability, Decrease, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued expenses
Government assistance, liability, decrease, noncurrent	$ 11
Government Assistance, Liability, Decrease, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Deferred Income Taxes and Other Assets, Noncurrent

Balance Sheet Detail

No definition available.

Name:	amat_BalanceSheetDetailAbstract
Namespace Prefix:	amat_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

+ Details

Name:	us-gaap_Depreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of decrease in asset from government assistance, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483507/832-10-50-3

+ Details

Name:	us-gaap_GovernmentAssistanceAssetDecreaseNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Indicates line item in statement of financial position that includes decrease in asset from government assistance, classified as noncurrent.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceAssetDecreaseNoncurrentStatementOfFinancialPositionExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of decrease in liability from government assistance.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of decrease in liability from government assistance, classified as current.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecreaseCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indicates line item in statement of financial position that includes decrease in liability from government assistance, classified as current.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecreaseCurrentStatementOfFinancialPositionExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of decrease in liability from government assistance, classified as noncurrent.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecreaseNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indicates line item in statement of financial position that includes decrease in liability from government assistance, classified as noncurrent.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecreaseNoncurrentStatementOfFinancialPositionExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates line item in statement of financial position that includes decrease in liability from government assistance.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceLiabilityDecreaseStatementOfFinancialPositionExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of decrease (increase) in expense from government assistance, classified as operating.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceOperatingExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Indicates line item in statement of income or comprehensive income that includes decrease (increase) in expense from government assistance, classified as operating.

+ References

+ Details

Name:	us-gaap_GovernmentAssistanceOperatingExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration