Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation Share-Based Compensation Expense (Details)

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Basis of Presentation Share-Based Compensation Expense (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 28, 2015
Jun. 29, 2014
Jun. 28, 2015
Jun. 29, 2014
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense before income taxes $ 271.0 $ 274.0 $ 793.0 $ 806.0
Related income tax benefit (58.0) (42.0) (145.0) (151.0)
Share-based compensation expense, net of income taxes 213.0 232.0 648.0 655.0
Share-based compensation expense related to share-based awards granted during period     173.0 177.0
Cost of equipment and services revenues        
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense before income taxes 10.0 12.0 33.0 37.0
Research and development        
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense before income taxes 176.0 174.0 508.0 510.0
Selling, general and administrative        
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense before income taxes 85.0 $ 88.0 252.0 $ 259.0
Restricted Stock [Member]        
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Unrecognized compensation costs related to non-vested restricted stock units $ 1,500.0   $ 1,500.0  
Weighted average period over which unrecognized compensation expense related to non-vested restricted stock units is expected to be recognized     2 years  
Equity Compensation Plans Consolidated [Member]        
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Net share-based awards granted, after forfeitures and cancellations, in fiscal year as percent of total outstanding stock at beginning of fiscal period 0.80% 0.80% 0.80% 0.80%
Total share based awards granted in fiscal year as percent of total outstanding stock at end of fiscal period 0.90% 0.90% 0.90% 0.90%