|12 Months Ended|
Sep. 27, 2020
|Investments, Debt and Equity Securities [Abstract]|
|Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure||Marketable Securities
We classify marketable securities as current or noncurrent based on the nature of the securities and their availability for use in current operations. Our marketable securities were comprised as follows (in millions):
(1) Noncurrent marketable securities were included in other assets.
(2) At September 27, 2020, marketable securities also included a time deposit with an original maturity of greater than 90 days.
The contractual maturities of available-for-sale debt securities were as follows (in millions):
Debt securities with no single maturity date included mortgage- and asset-backed securities and auction rate securities.
At September 27, 2020, unrealized gains and unrealized losses on available-for-sale debt securities were $20 million and negligible, respectively. At September 29, 2019, unrealized gains and losses on available-for-sale debt securities were negligible.
The entire disclosure for investments in certain debt and equity securities.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef