XML 120 R103.htm IDEA: XBRL DOCUMENT v3.8.0.1
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Oct. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 10 years    
Restricted stock units granted, number of shares [1] 4.0    
Restricted stock units granted, unvested number of shares 9.0 [2] 10.0  
Weighted average grant-date fair values of options granted $ 25.65 $ 30.93 $ 22.65
Stock options exercised and RSUs vested, total intrinsic value $ 757 $ 981 $ 1,332
Aggregate intrinsic values of stock options vested 562    
Cash received from option exercises 276 259 329
Tax benefits realized from tax deductions associated with option exercises and RSU activity 264 $ 342 $ 457
Expected to Vest      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate intrinsic values of stock options vested $ 42    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum extension period of stock options after grant date 15 years    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Ratable vesting term of stock options from grant date 4 years    
Number of shares authorized to be awarded as grants 66.0    
Unrecognized compensation costs $ 133    
Weighted-average period to recognize compensation costs 1 year 8 months    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Ratable vesting term of stock options from grant date 4 years    
Number of shares authorized to be awarded as grants 33.0    
Unrecognized compensation costs $ 468    
Weighted-average period to recognize compensation costs 1 year 7 months    
Performance Based Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Ratable vesting term of stock options from grant date 3 years    
Restricted stock units granted, number of shares 0.2    
Restricted stock units granted, unvested number of shares 0.6    
[1] Includes 0.2 million Performance RSUs.
[2] Includes 0.6 million Performance RSUs.