Quarterly report pursuant to Section 13 or 15(d)

Cover Page Cover Page

Cover Page Cover Page - shares
3 Months Ended
Dec. 29, 2019
Feb. 03, 2020
Cover page.    
Entity Registrant Name QUALCOMM INC/DE  
Entity Central Index Key 0000804328  
Current Fiscal Year End Date --09-27  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Dec. 29, 2019  
Document Transition Report false  
Entity File Number 0-19528  
Entity Registrant State of Incorporation DE  
Entity Employer ID 95-3685934  
Entity Address 5775 Morehouse Dr.,  
Entity City San Diego,  
Entity State CA  
Entity Zip Code 92121-1714  
City Area Code (858)  
Entity Phone Number 587-1121  
Title of 12(b) Security Common Stock, $0.0001 par value  
Trading Symbol  QCOM  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   1,143,042,806