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Changes In Accounting Principles Changes in Accounting Principles (Details) - USD ($)
$ in Millions
Oct. 03, 2020
Sep. 29, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating Lease, Right-of-Use Asset $ 532 $ 549
Operating Lease, Liability $ 529  
Other Liabilities [Member]    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating Lease, Liability   $ 546