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 9 Months Ended
Jun. 25, 2017
Mar. 26, 2017
Dec. 25, 2016
Jun. 26, 2016
Mar. 27, 2016
Dec. 27, 2015
Jun. 25, 2017
Jun. 26, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Balance at beginning of the period     $ 31,768       $ 31,768  
Net income attributable to Qualcomm $ 866     $ 1,444     2,297 $ 4,106
Net Loss attributable to noncontrolling interests (1)     (1)     (1) (3)
Net income 865     1,443     2,296 4,103
Other comprehensive income (loss) 60     184     (137) 149
Common stock issued under employee benefit plans and related tax benefits             345  
Share-based compensation             758  
Tax withholdings related to vesting of share-based payments             (263)  
Dividends (858) $ (798) (801) $ (794) $ (726) $ (730) (2,457) (2,250)
Stock repurchases             (1,027) $ (3,700)
Balance at end of the period 31,283           31,283  
Parent [Member]                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Balance at beginning of the period     31,778       31,778  
Net income attributable to Qualcomm             2,297  
Other comprehensive loss attributable to Qualcomm             (137)  
Common stock issued under employee benefit plans and related tax benefits             345  
Share-based compensation             758  
Tax withholdings related to vesting of share-based payments             (263)  
Dividends             (2,457)  
Stock repurchases             (1,027)  
Balance at end of the period 31,294           31,294  
Noncontrolling Interests [Member]                
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Balance at beginning of the period     $ (10)       (10)  
Net Loss attributable to noncontrolling interests             (1)  
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 - Noncontrolling interest             0  
Stock repurchases             0  
Balance at end of the period $ (11)           $ (11)