v3.26.1
Segment Reporting (Information by Geographic Area) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Mar. 29, 2026
Mar. 30, 2025
Sep. 28, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets: $ 19,998.3   $ 19,998.3   $ 24,637.4
Total net revenues 9,531.5 $ 8,761.6 19,446.6 $ 18,159.4  
United States          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets: 15,645.7   15,645.7   15,952.7
Total net revenues 6,930.3 6,403.5 14,174.3 13,384.7  
China          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets: 170.6   170.6   4,276.8
Total net revenues 809.2 752.1 1,644.9 1,508.8  
Other countries          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets: 4,182.0   4,182.0   $ 4,407.9
Total net revenues $ 1,792.0 $ 1,606.0 $ 3,627.4 $ 3,265.9