Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Sep. 27, 2020
Sep. 29, 2019
Income Taxes [Line Items]        
Effective income tax rate (benefit) 2.00% (91.00%)    
Income tax (expense) benefit $ (22) $ 509    
Unrecognized tax benefits 1,800     $ 1,700
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 0      
U.S. Tax Cuts and Jobs Act Effective 2018 [Member]        
Income Taxes [Line Items]        
Income tax (expense) benefit   $ 570    
FDII Effective Tax Rate [Member]        
Income Taxes [Line Items]        
Effective income tax rate (benefit) 13.00%      
Internal Revenue Service (IRS) [Member]        
Income Taxes [Line Items]        
Income tax (expense) benefit $ 102      
Forecast [Member]        
Income Taxes [Line Items]        
Effective income tax rate (benefit)     11.00%