Marketable Securities

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):

	Current				Noncurrent (1)
	September 27, 2020		September 29, 2019		September 27, 2020		September 29, 2019
Available-for-sale debt securities:
U.S. Treasury securities and government-related securities	$	10	$	—	$	—	$	—
Corporate bonds and notes	4,049		4		—		—
Mortgage- and asset-backed and auction rate securities	66		—		35		35
Total available-for-sale debt securities	4,125		4		35		35
Equity securities	352		417		—		1
Time deposit (2)	30		—		—		—
Total marketable securities	$	4,507	$	421	$	35	$	36

(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):

	September 27, 2020
Years to Maturity:
Less than one year	$	2,868
One to five years	1,192
No single maturity date	100
Total	$	4,160

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.