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Fair Value Measurements (Schedule Of Debt Securities Measured At Fair Value On A Recurring Basis, Unobservable Input Reconciliation) (Details) - USD ($)
$ in Millions
9 Months Ended
Jul. 02, 2022
Jul. 03, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of year $ 48 $ 53
Total unrealized gains (losses) included in other comprehensive income (loss) (2) (1)
Purchases 7 17
Issuances 0 0
Settlements (15) (20)
Balance at end of period 38 49
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) $ 0 $ 0