Business Combinations	12 Months Ended
	Oct. 25, 2020
Business Combinations [Abstract]
Business Combinations	Business CombinationsKokusai Electric CorporationOn June 30, 2019, Applied entered into a Share Purchase Agreement (SPA) to acquire all outstanding shares of Kokusai Electric Corporation (Kokusai Electric) for $2.2 billion in cash, subject to certain post-closing adjustments. Kokusai Electric is a leading company in providing high-productivity batch processing systems and services for memory, foundry and logic customers. These systems complement Applied’s portfolio of single-wafer processing systems. Following the close of the transaction, Kokusai Electric will operate as a business unit of Applied’s Semiconductor Systems segment and continue to be based in Tokyo, with technology and manufacturing centers in Toyama, Japan and Cheonan, Korea. The transaction is subject to regulatory approvals and other customary closing conditions. The SPA contains certain termination rights, including if the transactions contemplated by the SPA are not consummated on or before June 30, 2020 (Outside Date), which date may be extended by three months on two separate occasions if, on the applicable date, the only conditions to closing relate to required regulatory approvals. Pursuant to the terms of the SPA, the parties mutually extended the Outside Date to September 30, 2020, and on September 30, 2020 mutually further extended the Outside Date to December 30, 2020.