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Restructuring and Related Charges Restructuring (Details) - Financial Fitness Program [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 21 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Mar. 30, 2019
Mar. 31, 2018
Mar. 30, 2019
Sep. 29, 2018
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Expected Cost $ 253   $ 253   $ 253  
Restructuring and Related Cost, Incurred Cost         225  
Restructuring Reserve 2   2   $ 2 $ 10
Payments for Restructuring     8      
Selling, General and Administrative Expenses [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost $ 8 $ 12 $ 16 $ 31