Quarterly report [Sections 13 or 15(d)]

Borrowings (Details)

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Borrowings (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Apr. 01, 2026
Jun. 27, 2026
Mar. 28, 2026
Jun. 27, 2026
Jun. 28, 2025
Dec. 27, 2025
Apr. 07, 2026
Debt Instrument [Line Items]              
Debt settled       $ 9,000 $ 1,500    
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   $ 6,500      
Senior Notes | Senior Notes, 4.65%, due 2031              
Debt Instrument [Line Items]              
Face amount of debt   $ 1,000   $ 1,000      
Stated interest rate   4.65%   4.65%      
Senior Notes | Senior Notes, 5.00%, due 2033              
Debt Instrument [Line Items]              
Face amount of debt   $ 1,000   $ 1,000      
Stated interest rate   5.00%   5.00%      
Senior Notes | Senior Notes, 5.30%, due 2036              
Debt Instrument [Line Items]              
Face amount of debt   $ 2,200   $ 2,200      
Stated interest rate   5.30%   5.30%      
Senior Notes | Senior Notes, 6.13%, due 2056              
Debt Instrument [Line Items]              
Face amount of debt   $ 1,800   $ 1,800      
Stated interest rate   6.13%   6.13%      
Senior Notes | Senior Notes, 6.20%, due 2066              
Debt Instrument [Line Items]              
Face amount of debt   $ 500   $ 500      
Stated interest rate   6.20%   6.20%      
Line of Credit | 364-Day Credit Facility              
Debt Instrument [Line Items]              
Term of debt           364 days  
Maximum borrowing capacity           $ 5,000  
Line of Credit | Credit Facility Maturing in January 2029              
Debt Instrument [Line Items]              
Term of debt     3 years        
Maximum borrowing capacity     $ 3,000