Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies New Accounting Announcements (Details)

v3.10.0.1
Significant Accounting Policies New Accounting Announcements (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2018
Sep. 24, 2017
Sep. 25, 2016
Jun. 24, 2018
Mar. 25, 2018
Dec. 24, 2017
Jun. 25, 2017
Mar. 26, 2017
Dec. 25, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Income Tax Expense (Benefit) $ 5,377 $ 555 $ 1,131            
Adjustment to prior year cash provided by operating activities 3,895 5,001 7,632            
Adjustments to prior year cash used in financing activities (31,487) 5,571 (5,754)            
Adjustment to opening retained earnings of fiscal 2019 663 30,088              
Accounting Standards Update 2016-09 [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Income Tax Expense (Benefit) 22                
Adjustment to prior year cash provided by operating activities   308 232            
Adjustments to prior year cash used in financing activities   (308) $ (232)            
Accounting Standards Update 2016-01 [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Adjustment to opening retained earnings of fiscal 2019 63                
Accounting Standards Update 2016-16 [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Adjustment to opening retained earnings of fiscal 2019 2,500                
Minimum [Member] | Accounting Standards Update 2014-09 [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Adjustment to opening retained earnings of fiscal 2019 800                
Maximum [Member] | Accounting Standards Update 2014-09 [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Adjustment to opening retained earnings of fiscal 2019 $ 1,000                
Other Noncurrent Assets [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Restricted Cash and Cash Equivalents             $ 700 $ 700 $ 700
Redemption of fixed-rate notes due 2019 and 2020 [Member] | Other Current Assets [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Restricted Cash and Cash Equivalents       $ 2,800          
NXP [Member] | Other Noncurrent Assets [Member]                  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]                  
Restricted Cash and Cash Equivalents   $ 2,000   $ 2,000 $ 2,000 $ 2,000