Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies Cumulative Effect of Adopting New Revenue Accounting Guidance (Details)

v3.19.3
Significant Accounting Policies Cumulative Effect of Adopting New Revenue Accounting Guidance (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 29, 2019
Sep. 30, 2018
Sep. 24, 2017
Oct. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net $ 2,471 $ 2,904   $ 3,861
Other current assets 634 699   700
Deferred tax assets 1,196 936   838
Other assets 3,461 1,970   1,971
Unearned revenues, current 565 500   506
Other current liabilities 3,458 6,978   7,103
Unearned revenues 1,160 1,620   1,510
Other liabilities 2,428 1,225    
Retained earnings 4,466 542   1,382
Equipment and services 14,611 17,400 $ 16,647  
Licensing 9,662 5,211 5,611  
Income Tax Expense (Benefit) 3,095 5,356 543  
Net income (loss) attributable to Qualcomm 4,386 (4,964) $ 2,445  
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net (1,171)     957
Other current assets (35)     1
Deferred tax assets 140     (98)
Other assets (62)     1
Unearned revenues, current 55     6
Other current liabilities (169)     125
Unearned revenues 182     (110)
Other liabilities (58)      
Retained earnings (1,138)     $ 840
Equipment and services (106)      
Licensing (270)      
Income Tax Expense (Benefit) (78)      
Net income (loss) attributable to Qualcomm (298)      
Calculated under Revenue Guidance in Effect before Topic 606 [Member]        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Accounts receivable, net 1,300 2,904    
Other current assets 599 699    
Deferred tax assets 1,336 936    
Other assets 3,399 1,970    
Unearned revenues, current 620 500    
Other current liabilities 3,289 6,978    
Unearned revenues 1,342 1,620    
Other liabilities 2,370      
Retained earnings 3,328 $ 542    
Equipment and services 14,505      
Licensing 9,392      
Income Tax Expense (Benefit) 3,017      
Net income (loss) attributable to Qualcomm 4,088      
Cash Flows [Member]        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Cumulative effect of accounting changes $ 0