Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies Update Cumulative Effective of Adopting New Revenue Accounting Guidance (Details)

v3.19.1
Basis of Presentation and Significant Accounting Policies Update Cumulative Effective of Adopting New Revenue Accounting Guidance (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2019
Mar. 25, 2018
Mar. 31, 2019
Mar. 25, 2018
Oct. 01, 2018
Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Accounts receivable, net $ 3,638   $ 3,638   $ 3,861 $ 2,904
Other current assets 631   631   700 699
Deferred tax assets 3,832   3,832   838 936
Other assets 2,113   2,113   1,971 1,970
Unearned revenues, current 478   478   506 500
Other current liabilities 6,741   6,741   7,103 6,978
Unearned revenues 1,330   1,330   1,510 1,620
Retained earnings 3,309   3,309   1,382 542
Equipment and services 3,753 $ 3,936 7,506 $ 8,639    
Licensing 1,229 1,284 2,318 2,616    
Investment and other income, net 28 96 33 211    
Income tax (expense) benefit (143) 13 365 (5,911)    
Net income 663 $ 330 1,731 $ (5,653)    
Calculated under Revenue Guidance in Effect before Topic 606 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Accounts receivable, net 2,787   2,787     2,904
Other current assets 622   622     699
Deferred tax assets 3,877   3,877     936
Other assets           1,970
Unearned revenues, current 782   782     500
Other current liabilities 6,375   6,375     6,978
Unearned revenues 1,439   1,439     1,620
Retained earnings 2,448   2,448     $ 542
Equipment and services 3,698   7,436      
Licensing 1,221   2,361      
Investment and other income, net 27   34      
Income tax (expense) benefit (133)   369      
Net income 609   1,709      
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Accounts receivable, net 851   851   957  
Other current assets 9   9   1  
Deferred tax assets 45   45   98  
Other assets         1  
Unearned revenues, current 304   304   6  
Other current liabilities 366   366   125  
Unearned revenues 109   109   110  
Retained earnings (861)   (861)   $ 840  
Equipment and services (55)   (70)      
Licensing (8)   43      
Investment and other income, net 1   1      
Income tax (expense) benefit 10   4      
Net income $ (54)   $ (22)