Annual report pursuant to Section 13 and 15(d)

Segment Information (Details)

v3.10.0.1
Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 30, 2018
Jun. 24, 2018
Mar. 25, 2018
Dec. 24, 2017
Sep. 24, 2017
Jun. 25, 2017
 [1]
Mar. 26, 2017
 [1]
Dec. 25, 2016
 [1]
Sep. 29, 2019
Sep. 30, 2018
Sep. 24, 2017
Sep. 25, 2016
Segment Reporting Information [Line Items]                        
Segment reporting, factors used to identify entity's reportable segments                   We are organized on the basis of products and services and have three reportable segments.    
Revenues $ 5,803 [1] $ 5,599 $ 5,261 $ 6,068 $ 5,905 [1] $ 5,371 $ 5,016 $ 5,999   $ 22,732 $ 22,291 $ 23,554
EBT                   513 3,020 6,833
Total assets 32,686       65,486         32,686 65,486 52,359
Equity method investments 402       379         402 379  
Net book value of long-lived assets 2,975       3,216         2,975 3,216  
Cost of revenues                   (10,244) (9,792) (9,749)
Research and development expense                   (5,625) (5,485) (5,151)
Selling, general and administrative expense                   (2,986) (2,658) (2,385)
Other expense                   (3,135) (1,742) 226
Interest expense                   (768) (494) (297)
Investment and other Income, net                   539 900 635
Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   187 (746) 434
EBT                   (6,002) (4,967) (1,893)
Total assets 26,894       58,884         26,894 58,884 47,810
Cost of revenues                   (486) (517) (495)
Research and development expense                   (1,154) (1,056) (799)
Selling, general and administrative expense                   (576) (647) (478)
Other expense                   (3,135) (1,742) (154)
Interest expense                   (761) (488) (292)
Investment and other Income, net                   566 913 667
Intersegment Eliminations [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   0 0 (4)
Change of segment methodology [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Research and development expense                   $ (474)    
Unallocated other revenues [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Segment reporting, change in measurement methods                   In fiscal 2018, all of the costs ($474 million) related to pre-commercial research and development of 5G (fifth generation) technologies were included in unallocated corporate research and development expenses, whereas similar costs related to the research and development of other technologies, including 3G (third generation) and 4G (fourth generation) technologies, were recorded in the QCT and QTL segments.    
QCT [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   $ 17,282 16,479 15,409
EBT                   2,966 2,747 1,812
Total assets 3,041       3,830         3,041 3,830 2,995
QTL [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   5,163 6,445 7,664
EBT                   3,525 5,175 6,528
Total assets 1,472       1,735         1,472 1,735 644
QSI [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   100 113 47
EBT                   24 65 386
Total assets 1,279       1,037         1,279 1,037 910
Equity method investments 283       254         283 254 162
Nonreportable Segments [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   287 311 438
EBT                   (356) (373) (342)
Cost of revenues [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Unallocated acquisition-related expenses                   449 437 434
Research and development expenses [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Unallocated acquisition-related expenses                   6 20 10
Selling, general and administrative expenses [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Unallocated acquisition-related expenses                   327 272 99
Blackberry [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                     (940)  
Blackberry [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   0 (962) 0
Blackberry [Member] | QTL [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                     22  
Licensing Agreements [Member] | Reconciling Items [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   (100) (95) 0
CHINA                        
Segment Reporting Information [Line Items]                        
Revenues                   15,149 14,579 13,503
Non-US [Member]                        
Segment Reporting Information [Line Items]                        
Net book value of long-lived assets 1,400       1,400         1,400 1,400 404
Other Foreign [Member]                        
Segment Reporting Information [Line Items]                        
Revenues                   3,805 3,661 5,747
KOREA, REPUBLIC OF                        
Segment Reporting Information [Line Items]                        
Revenues                   3,175 3,538 3,918
UNITED STATES                        
Segment Reporting Information [Line Items]                        
Revenues                   603 513 386
Net book value of long-lived assets $ 1,600       $ 1,800         $ 1,600 $ 1,800 $ 1,900
Scenario, Forecast [Member] | Change of segment methodology [Member]                        
Segment Reporting Information [Line Items]                        
Research and development expense                 $ 500      
[1] Amounts, other than per share amounts, are rounded to millions each quarter. Therefore, the sum of the quarterly amounts may not equal the annual amounts reported.