| Cover Page - USD ($) | 12 Months Ended | ||
| Oct. 02, 2020 | Nov. 13, 2020 | Apr. 03, 2020 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Oct. 2, 2020 | ||
| Current Fiscal Year End Date | --10-02 | ||
| Document Transition Report | false | ||
| Entity File Number | 1-7598 | ||
| Entity Registrant Name | VARIAN MEDICAL SYSTEMS, INC. | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 94-2359345 | ||
| Entity Address, Address Line One | 3100 Hansen Way | ||
| Entity Address, City or Town | Palo Alto | ||
| Entity Address, State or Province | CA | ||
| Entity Address, Postal Zip Code | 94304-1038 | ||
| City Area Code | (650) | ||
| Local Phone Number | 493-4000 | ||
| Title of 12(b) Security | Common Stock, $1 par value | ||
| Trading Symbol | VAR | ||
| Security Exchange Name | NYSE | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Amendment Flag | true | ||
| Document Fiscal Year Focus | 2020 | ||
| Document Fiscal Period Focus | FY | ||
| Entity Central Index Key | 0000203527 | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 6,905,810,423 | ||
| Entity Common Stock, Shares Outstanding | 91,355,469 | ||
| Amendment Description | On August 2, 2020, Varian Medical Systems, Inc. (“we,” “our,” “Varian” or the “Company”), Siemens Healthineers Holding I GmbH, a company organized under the laws of Germany (“Siemens Healthineers”), Falcon Sub Inc., a Delaware corporation and a direct wholly-owned subsidiary of Siemens Healthineers (“Merger Sub”), and, with respect to certain provisions, Siemens Medical Solutions USA, Inc., a Delaware corporation, entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which, on the terms and subject to the conditions set forth therein, Merger Sub will be merged with and into the Company (the “Merger”), with the Company surviving the Merger as a wholly owned subsidiary of Siemens Healthineers. In light of the proposed Merger, the Company currently does not anticipate holding an annual meeting of stockholders in 2021 (the “Annual Meeting”) and the Company is filing this Amendment No. 1 on Form 10-K/A (this “Amendment”) to file certain information that is typically included in the Company’s definitive proxy statement for the Company’s Annual Meeting. This Amendment amends the Company’s Annual Report on Form 10-K for the fiscal year ended October 2, 2020, originally filed with the Securities and Exchange Commission (the “SEC”) on November 25, 2020 (the “Original Filing”). The Company is filing this Amendment to amend Part III of the Original Filing to include the information required by and not included in Part III of the Original Filing because the Company no longer intends to file its definitive proxy statement within 120 days of the end of its fiscal year ended October 2, 2020. Part IV is being amended solely to add as exhibits certain new certifications in accordance with Rule 13a-14(a) promulgated by the SEC under the Securities Exchange Act of 1934 (the “Exchange Act”). Because no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulations S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. Except as described above, no other changes have been made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing, and the Company has not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the filing of the Original Filing other than as expressly indicated in this Amendment. Accordingly, this Amendment should be read in conjunction with the Original Filing and the Company’s other filings made with the SEC on or subsequent to November 25, 2020. |
