v3.25.4
Fair Value Measurements (Schedule Of Debt Securities Measured At Fair Value On A Recurring Basis, Unobservable Input Reconciliation) (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 27, 2025
Dec. 28, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of year $ 27 $ 28
Total unrealized gains (losses) included in other comprehensive income (loss) 0 0
Purchases 3 0
Issuances 0 0
Settlements (2) (3)
Balance at end of period 28 25
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) $ 0 $ 0