v3.25.4

Fair Value Measurements (Schedule Of Available For Sale Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 27, 2025	Sep. 27, 2025
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available For Sale Securities Debt Maturity Period	43 years
Short Term Investment Maturity Period	12 months
Other Assets [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-Sale, Noncurrent	$ 118	$ 117
Other Assets [Member] | Level 1 | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-Sale, Noncurrent	0	0
Other Assets [Member] | Level 2 | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-Sale, Noncurrent	90	90
Other Assets [Member] | Level 3 | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-Sale, Noncurrent	28	27
U.S. treasury and agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax	(1)	(1)
Debt Securities, Available-for-sale	90	90
Debt Securities, Available-for-Sale, Amortized Cost, Total	91	91
Corporate and asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax	0	0
Debt Securities, Available-for-sale	28	27
Debt Securities, Available-for-Sale, Amortized Cost, Total	$ 28	$ 27

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