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Marketable Securities
3 Months Ended
Dec. 26, 2021
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities
Our marketable securities were all classified as current and were comprised as follows (in millions):
December 26,
2021
September 26,
2021
Available-for-sale debt securities:  
Corporate bonds and notes$3,856 $4,459 
Mortgage- and asset-backed securities137 147 
U.S. Treasury securities and government-related securities10 10 
Total available-for-sale debt securities4,003 4,616 
Equity securities
700 682 
Total marketable securities$4,703 $5,298 
The contractual maturities of available-for-sale debt securities were as follows (in millions):
December 26,
2021
Years to Maturity
Less than one year$566 
One to five years3,300 
No single maturity date137 
Total$4,003 
Debt securities with no single maturity date included mortgage- and asset-backed securities.