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Marketable Securities
 12 Months Ended
Sep. 25, 2022
Investments, Debt and Equity Securities [Abstract]  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure Marketable Securities
Our marketable securities were all classified as current and were comprised as follows (in millions):
September 25,
2022		September 26,
2021
Available-for-sale debt securities:  
Corporate bonds and notes$3,330 $4,459 
Mortgage- and asset-backed securities99 147 
U.S. Treasury securities and government-related securities16 10 
Total available-for-sale debt securities3,445 4,616 
Equity securities
164 682 
Total marketable securities$3,609 $5,298 
The contractual maturities of available-for-sale debt securities were as follows (in millions):
September 25,
2022
Years to Maturity:
Less than one year$994 
One to five years2,352 
No single maturity date99 
Total$3,445 
Debt securities with no single maturity date included mortgage- and asset-backed securities.