Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 22, 2015
Jun. 28, 2015
Jun. 28, 2015
Jun. 29, 2014
Mar. 09, 2015
Stock repurchase program [Abstract]          
Authorized amount         $ 15,000
Upfront payment under Accelerated Share Repurchase agreements     $ 5,000    
Stock Repurchased and Retired During Period, Value     $ 9,016    
Accounting for share repurchases in Balance Sheet     To reflect share repurchases in the condensed consolidated balance sheet, the Company (i) reduces common stock for the par value of the shares, (ii) reduces paid-in capital for the amount in excess of par to zero during the quarter in which the shares are repurchased and (iii) records the residual amount to retained earnings    
Stock Repurchase Program, Remaining Authorized Repurchase Amount   $ 9,100 $ 9,100    
Subsequent Event          
Stock repurchase program [Abstract]          
Shares repurchased and retired, shares 8,018,000        
Stock Repurchased and Retired During Period, Value $ 510        
Noncontrolling Interests [Member]          
Stock repurchase program [Abstract]          
Stock Repurchased and Retired During Period, Value     0    
Qualcomm Stockholders' Equity [Member]          
Stock repurchase program [Abstract]          
Stock Repurchased and Retired During Period, Value     $ 9,016    
Accelerated Share Repurchase Program [Member]          
Stock repurchase program [Abstract]          
Shares repurchased and retired, shares   57,737,000      
Stock Repurchased and Retired During Period, Value   $ 4,000      
Unsettled Forward Contract Indexed to Issuer's Stock, classified within Stockholder's Equity   $ 1,000      
Open Market Repurchases [Member]          
Stock repurchase program [Abstract]          
Shares repurchased and retired, shares     56,652,000 44,609,000  
Stock Repurchased and Retired During Period, Value     $ 4,000 $ 3,400