Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

 v2.3.0.11
Basis of Presentation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 26, 2011
Jun. 27, 2010
Jun. 26, 2011
Jun. 27, 2010
Sep. 25, 2011
Sep. 26, 2010
Notes to Financial Statements [Abstract]            
Number of weeks in a fiscal period 13 weeks 13 weeks 39 weeks 39 weeks 52-53 week 52-53 week
Incremental dilutive common share equivalents [Abstract]            
Incremental dilutive common share equivalents (in shares) 35,820,000 13,039,000 32,094,000 16,303,000    
Comprehensive Income [Abstract]            
Net income $ 1,029 $ 767 $ 3,194 $ 2,382    
Other comprehensive income:            
Foreign currency translation 0 (56) 13 (58)    
Noncredit other-than-temporary impairment losses and subsequent changes in fair value related to certain marketable debt securities, net of income taxes (2) (7) (12) 13    
Net unrealized gains (losses) on other marketable securities and derivative instruments, net of income taxes (7) (180) 215 151    
Reclassification of net realized gains on marketable securities and derivative instruments included in net income, net of income taxes (45) (64) (179) (228)    
Reclassification of other-than-temporary losses on marketable securities included in net income, net of income taxes 3 16 10 63    
Total other comprehensive (loss) income (51) (291) 47 (59)    
Total comprehensive income 978 476 3,241 2,323    
Comprehensive loss attributable to noncontrolling interests 6 0 10 0    
Comprehensive income attributable to QUALCOMM 984 476 3,251 2,323    
Components of accumulated other comprehensive income [Abstract]            
Noncredit other-than-temporary impairment losses and subsequent changes in fair value related to certain marketable debt securities, net of income taxes 36   36     62
Net unrealized gains on marketable securities, net of income taxes 779   779     723
Net unrealized losses on derivative instruments, net of income taxes (4)   (4)     (8)
Foreign currency translation (67)   (67)     (80)
Total accumulated other comprehensive income 744   744     697
Other-than-temporary losses on marketable debt securities related to factors other than credit, net of income taxes 14   14      
Share-based payments [Abstract]            
Cost of equipment and services revenues 14 10 44 30    
Research and development 95 72 277 216    
Selling, general and administrative 84 63 240 195    
Continuing operations 193 145 561 441    
Related income tax benefit (46) (37) (155) (127)    
Continuing operations, net of income taxes 147 108 406 314    
Discontinued operations 1 4 7 12    
Related income tax benefit (1) (1) (3) (4)    
Discontinued operations, net of income taxes 0 3 4 8    
Share-based compensation expense, net of income taxes 147 111 410 322    
Share-based compensation expense related to share-based award     95 73    
Incremental tax benefit from stock options exercised     167 34    
Weighted-average recognition period for non-vested employee stock options (in years)     2.2      
Total unrecognized compensation cost for non-vested stock options 714   714      
Total unrecognized compensation cost for non-vested employee restricted stock units $ 732   $ 732      
Weighted average recognition period for non vested employee restricted stock units (in years)     2.5      
Net share-based awards granted, after forfeitures and cancellations, as a percentage of outstanding shares as of the beginning of each fiscal period     0.70% 1.30%    
Total share-based awards granted during the period as a percentage of outstanding shares as of the end of each fiscal period     0.50% 1.80%    
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 9,564,000   9,564,000      
Stock Options [Member]
           
Antidilutive securities excluded from computation of earnings per share [Line Items]            
Antidilutive securities excluded from computation of EPS (in shares) 4,492,000 163,146,000 23,721,000 145,464,000    
Other common stock equivalents [Member]
           
Antidilutive securities excluded from computation of earnings per share [Line Items]            
Antidilutive securities excluded from computation of EPS (in shares) 2,891,000 574,000 1,146,000 314,000