Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Fair Value Hierarchy (Details)

v3.19.3.a.u2
Fair Value Measurements Fair Value Hierarchy (Details) - USD ($)
$ in Millions
 3 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Sep. 29, 2019
Liabilities      
Activity within level three hierarchy $ 0 $ 0  
Fair Value, Measurement with Unobservable Inputs, Nonrecurring Basis, Asset and Liability Value 0 $ 0  
Long-term Debt, Fair Value 16,600   $ 16,500
Fair Value, Recurring [Member]      
Assets      
Cash equivalents 9,759    
Marketable securities 350    
Derivative instruments 24    
Other investments 572    
Total assets measured at fair value 10,705    
Liabilities      
Derivative instruments 2    
Other liabilities 515    
Total liabilities measured at fair value 517    
Fair Value, Recurring [Member] | Level 1 [Member]      
Assets      
Cash equivalents 6,101    
Marketable securities 315    
Derivative instruments 0    
Other investments 474    
Total assets measured at fair value 6,890    
Liabilities      
Derivative instruments 0    
Other liabilities 475    
Total liabilities measured at fair value 475    
Fair Value, Recurring [Member] | Level 2 [Member]      
Assets      
Cash equivalents 3,658    
Marketable securities 0    
Derivative instruments 24    
Other investments 0    
Total assets measured at fair value 3,682    
Liabilities      
Derivative instruments 2    
Other liabilities 0    
Total liabilities measured at fair value 2    
Fair Value, Recurring [Member] | Level 3 [Member]      
Assets      
Cash equivalents 0    
Marketable securities 35    
Derivative instruments 0    
Other investments 98    
Total assets measured at fair value 133    
Liabilities      
Derivative instruments 0    
Other liabilities 40    
Total liabilities measured at fair value 40    
Auction rate securities [Member] | Fair Value, Recurring [Member]      
Assets      
Marketable securities 35    
Auction rate securities [Member] | Fair Value, Recurring [Member] | Level 1 [Member]      
Assets      
Marketable securities 0    
Auction rate securities [Member] | Fair Value, Recurring [Member] | Level 2 [Member]      
Assets      
Marketable securities 0    
Auction rate securities [Member] | Fair Value, Recurring [Member] | Level 3 [Member]      
Assets      
Marketable securities 35    
Equity securities [Member] | Fair Value, Recurring [Member]      
Assets      
Marketable securities 315    
Equity securities [Member] | Fair Value, Recurring [Member] | Level 1 [Member]      
Assets      
Marketable securities 315    
Equity securities [Member] | Fair Value, Recurring [Member] | Level 2 [Member]      
Assets      
Marketable securities 0    
Equity securities [Member] | Fair Value, Recurring [Member] | Level 3 [Member]      
Assets      
Marketable securities $ 0