Annual report pursuant to Section 13 and 15(d)

The Company and Its Significant Accounting Policies Share-Based Compensation (Details)

v3.8.0.1
The Company and Its Significant Accounting Policies Share-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Sep. 24, 2017
Sep. 25, 2016
Sep. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense before income taxes $ 914 $ 943 $ 1,026
Related income tax benefit (161) (190) (190)
Share-based compensation expense, net of income taxes 753 753 836
Cost of revenues [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense before income taxes 38 40 42
Research and development [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense before income taxes 588 614 659
Selling, general and administrative [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Share-based compensation expense before income taxes $ 288 $ 289 $ 325
Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
RSUs granted, weighted average grant date fair value $ 66.54 $ 53.56 $ 68.77
Annual pre-vesting forfeiture rate 5.00% 4.00% 3.00%