Document and Entity Information - USD ($)	12 Months Ended
	Oct. 28, 2018	Dec. 07, 2018	Apr. 29, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	APPLIED MATERIALS INC /DE
Entity Central Index Key	0000006951
Current Fiscal Year End Date	--10-28
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false
Document Type	10-K
Document Period End Date	Oct. 28, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		958,606,093
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 49,674,881,854