Annual report pursuant to Section 13 and 15(d)

Income Taxes - Valuation Allowance (Details)

v3.20.4
Income Taxes - Valuation Allowance (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Income Tax Contingency [Line Items]        
Unrealized state credit carryforwards $ 1,800      
Undistributed earnings on certain foreign subsidiaries 19,000      
Balance at Beginning of Year 1,534      
Balance at End of Year 1,963 $ 1,534    
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]        
Income Tax Contingency [Line Items]        
Net (Deductions) Recoveries 51 (7) $ (54)  
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount 1,963 1,534 1,302 $ 1,171
SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment $ 378 $ 239 $ 185