Document and Entity Information
May 20, 2020
Cover [Abstract]  
Entity Registrant Name ON SEMICONDUCTOR CORP
Amendment Flag false
Entity Central Index Key 0001097864
Document Type 8-K
Document Period End Date May 20, 2020
Entity Incorporation State Country Code DE
Entity File Number 000-30419
Entity Tax Identification Number 36-3840979
Entity Address, Address Line One ON Semiconductor Corporation
Entity Address, Address Line Two 5005 E. McDowell Road
Entity Address, City or Town Phoenix
Entity Address, State or Province AZ
Entity Address, Postal Zip Code 85008
City Area Code (602)
Local Phone Number 244-6600
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.01 per share
Trading Symbol ON
Security Exchange Name NASDAQ
Entity Emerging Growth Company false