v3.26.1
Debt (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Dec. 12, 2025
Dec. 27, 2025
Mar. 28, 2026
Feb. 20, 2026
Sep. 27, 2025
Apr. 15, 2025
Debt Instrument [Line Items]            
Document Period End Date     Mar. 28, 2026      
Debt Instrument, Unamortized Discount     $ 34,000,000   $ 34,000,000  
Term Loan Facility Due May 2028            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 0   440,000,000  
Debt Instrument, Interest Rate, Stated Percentage     6.18%      
Repayments of Lines of Credit $ 440,000,000          
Five Point Four Zero Percentage Senior Notes Due March, Two Thousand and Twenty Nine            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 600,000,000   600,000,000  
Debt Instrument, Interest Rate, Stated Percentage     5.40%      
Five Point Seven Zero Percentage Senior Unsecured Notes Due March, Two Thousand and Thirty Four            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 900,000,000   900,000,000  
Debt Instrument, Interest Rate, Stated Percentage     5.70%      
4.00% Notes due March 2026 (“2026 Notes”)            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 0   800,000,000  
Debt Instrument, Interest Rate, Stated Percentage     4.00%      
3.55% Notes due June 2027            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 1,350,000,000   1,350,000,000  
Debt Instrument, Interest Rate, Stated Percentage     3.55%      
7.00% Notes due January 2028            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 18,000,000   18,000,000  
Debt Instrument, Interest Rate, Stated Percentage     7.00%      
4.35% Notes due March 2029 (“2029 Notes”)            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 1,000,000,000   1,000,000,000  
Debt Instrument, Interest Rate, Stated Percentage     4.35%      
6.13% Notes due November 2032            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 157,000,000   157,000,000  
Debt Instrument, Interest Rate, Stated Percentage     6.13%      
4.88% Notes due August 2034            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 500,000,000   500,000,000  
Debt Instrument, Interest Rate, Stated Percentage     4.88%      
5.15% Notes due August 2044            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 497,000,000   497,000,000  
Debt Instrument, Interest Rate, Stated Percentage     5.15%      
4.55% Notes due June 2047            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 713,000,000   733,000,000  
Debt Instrument, Interest Rate, Stated Percentage     4.55%      
5.10% Notes due September 2048 (“2048 Notes”)            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 1,485,000,000   1,490,000,000  
Debt Instrument, Interest Rate, Stated Percentage     5.10%      
Senior Notes            
Debt Instrument [Line Items]            
Extinguishment of Debt, Amount   $ 25,000,000        
Four Point Nine Five Percentage Senior Unsecured Notes Due August, Two Thousand and Thirty Six            
Debt Instrument [Line Items]            
Long-term Debt, Gross     $ 500,000,000 $ 500,000,000 0  
Debt Instrument, Interest Rate, Stated Percentage     4.95%      
Debt Instrument, Unamortized Discount       2,000,000    
Debt Issuance Costs, Gross       $ 5,000,000    
Four Point Nine Five Percentage Senior Unsecured Notes Due August, Two Thousand and Thirty Six | Senior Unsecured Notes            
Debt Instrument [Line Items]            
Proceeds from Issuance of Long-Term Debt     $ 498,000,000      
Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Maximum borrowing capacity     2,500,000,000      
Amount available for borrowing under credit facility     2,500,000,000      
Revolving credit facility     0   0  
Line of Credit Facility, Contingent Additional Borrowing Capacity           $ 500,000,000
Standby Letters of Credit [Member]            
Debt Instrument [Line Items]            
Letters of Credit Outstanding, Amount     0      
Bilateral Letters Of Credit [Member]            
Debt Instrument [Line Items]            
Letters of Credit Outstanding, Amount     83,000,000      
Commercial paper            
Debt Instrument [Line Items]            
Maximum borrowing capacity     1,750,000,000      
Commercial paper     $ 30,000,000   0  
Short-Term Debt, Weighted Average Interest Rate, at Point in Time     4.00%      
Debt Instrument, Term     5 days      
us-gaap_RevolvingTermLoanCreditFacilityMember            
Debt Instrument [Line Items]            
Maximum borrowing capacity $ 750,000,000          
Revolving credit facility     $ 0   $ 0