Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans Employee Stock Purchase Plan (Details)

v3.10.0.1
Employee Benefit Plans Employee Stock Purchase Plan (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Mar. 23, 2018
Sep. 30, 2018
Sep. 24, 2017
Sep. 25, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share reserve approved 30,000,000      
Employee Stock Purchase Plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage applied to fair market value of the Company's common stock to determine purchase price   85.00%    
Maximum amount of employee compensation that can be withheld   15.00%    
Shares authorized   101,709,000    
Shares reserved for future issuances   38,858,000    
Shares issued in period   5,800,000 5,700,000 6,000,000
Unrecognized compensation expense related to non-vested awards   $ 24    
Cash received from the exercise of purchase rights   $ 286 $ 260 $ 232
Weighted Average [Member] | Employee Stock Purchase Plans [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Average price per share issued   $ 49.41 $ 45.29 $ 38.89