Quarterly report [Sections 13 or 15(d)]

Borrowings (Details)

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Borrowings (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Oct. 01, 2026
Sep. 26, 2026
Jun. 27, 2026
Mar. 28, 2026
Sep. 26, 2026
Sep. 27, 2025
Dec. 27, 2025
Apr. 07, 2026
Debt Instrument [Line Items]                
Debt settled         $ 9,000 $ 3,750    
Ireland SCIP                
Debt Instrument [Line Items]                
Non-controlling ownership %   0.00%     0.00% 49.00%   49.00%
364-Day Senior Unsecured Term Loan Facility | Bridge Loan                
Debt Instrument [Line Items]                
Term of debt     364 days          
Face amount of debt     $ 6,500          
Interest rate on short-term debt     4.79%          
Senior Notes                
Debt Instrument [Line Items]                
Debt settled     $ 1,000 $ 1,500        
Face amount of debt     6,500          
Senior Notes | Senior Notes, 4.65%, due 2031                
Debt Instrument [Line Items]                
Face amount of debt     $ 1,000          
Stated interest rate     4.65%          
Senior Notes | Senior Notes, 5.00%, due 2033                
Debt Instrument [Line Items]                
Face amount of debt     $ 1,000          
Stated interest rate     5.00%          
Senior Notes | Senior Notes, 5.30%, due 2036                
Debt Instrument [Line Items]                
Face amount of debt     $ 2,200          
Stated interest rate     5.30%          
Senior Notes | Senior Notes, 6.13%, due 2056                
Debt Instrument [Line Items]                
Face amount of debt     $ 1,800          
Stated interest rate     6.13%          
Senior Notes | Senior Notes, 6.20%, due 2066                
Debt Instrument [Line Items]                
Face amount of debt     $ 500          
Stated interest rate     6.20%          
Line of Credit | Subsequent Event                
Debt Instrument [Line Items]                
Maximum borrowing capacity $ 15,000              
Increase in borrowing capacity $ 500              
Line of Credit | 364-Day Credit Facility                
Debt Instrument [Line Items]                
Term of debt             364 days  
Maximum borrowing capacity             $ 5,000  
Line of Credit | Three-Year Credit Facility                
Debt Instrument [Line Items]                
Term of debt   3 years   3 years        
Maximum borrowing capacity   $ 4,800 $ 3,000 $ 3,000 $ 4,800      
Line of Credit | Three-Year Credit Facility | Subsequent Event                
Debt Instrument [Line Items]                
Term of debt 3 years              
Maximum borrowing capacity $ 5,000              
Line of Credit | Five-Year Credit Facility | Revolving Credit Facility                
Debt Instrument [Line Items]                
Term of debt   5 years            
Maximum borrowing capacity   $ 9,700 $ 7,000   $ 9,700      
Line of Credit | Five-Year Credit Facility | Revolving Credit Facility | Subsequent Event                
Debt Instrument [Line Items]                
Term of debt 5 years              
Maximum borrowing capacity $ 10,000