Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Changes in Stockholders' Equity (Details)

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Stockholders' Equity Changes in Stockholders' Equity (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 26, 2017
Dec. 25, 2016
Mar. 27, 2016
Dec. 27, 2015
Mar. 26, 2017
Mar. 27, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Balance at beginning of the period   $ 31,768     $ 31,768  
Net income attributable to Qualcomm $ 749   $ 1,164   1,431 $ 2,662
Net Loss attributable to noncontrolling interests 0   0     (2)
Net income 749   1,164   1,431 2,660
Other comprehensive loss 43   91   (198) (35)
Common stock issued under employee benefit plans and related tax benefits         320  
Share-based compensation         515  
Tax withholdings related to vesting of share-based payments         (175)  
Dividends (798) (801) $ (726) $ (730) (1,599) (1,456)
Stock repurchases         (727) $ (3,600)
Other         (1)  
Balance at end of the period 31,334       31,334  
Parent [Member]            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Balance at beginning of the period   31,778     31,778  
Net income attributable to Qualcomm         1,431  
Other comprehensive loss attributable to Qualcomm         (198)  
Common stock issued under employee benefit plans and related tax benefits         320  
Share-based compensation         515  
Tax withholdings related to vesting of share-based payments         (175)  
Dividends         (1,599)  
Stock repurchases         (727)  
Other         (1)  
Balance at end of the period 31,344       31,344  
Noncontrolling Interests [Member]            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Balance at beginning of the period   $ (10)     (10)  
Net Loss attributable to noncontrolling interests         0  
Other comprehensive loss attributable to noncontrolling interest         0  
Common stock issued under employee benefit plans and related tax benefits         0  
Share-based compensation         0  
Tax withholdings related to vesting of share-based payments         0  
Dividends         0  
Stock repurchases         0  
Other         0  
Balance at end of the period $ (10)       $ (10)