v3.20.4
Marketable and Other Securities
 12 Months Ended
Dec. 31, 2020
Marketable Securities [Abstract]  
Marketable and Other Securities Marketable and Other Securities
The following table summarizes the fair value of cash equivalents and marketable debt securities, which approximates cost:
Fair Value LevelDecember 31, 2020December 31, 2019
Cash and cash equivalents
Cash and time deposits(a)$8,010 $6,828 
Available-for-sale debt securities
U.S. government and agencies21,370 1,484 
Corporate debt23,476 5,863 
Sovereign debt22,051 2,123 
Total available-for-sale debt securities – cash equivalents6,897 9,470 
Money market funds15,085 2,771 
Total cash and cash equivalents(b)$19,992 $19,069 
Marketable debt securities
U.S. government and agencies2$1,771 $226 
Corporate debt23,630 2,932 
Mortgage and asset-backed2632 681 
Sovereign debt23,013 335 
Total available-for-sale debt securities – marketable securities(c)$9,046 $4,174 
Restricted cash
Cash and cash equivalents $269 $292 
Money market funds12,856 3,582 
Total restricted cash$3,125 $3,874 
Available-for-sale debt securities included above with contractual maturities(d)
Due in one year or less$12,533 
Due between one and five years2,778 
Total available-for-sale debt securities with contractual maturities$15,311 
__________
(a)    Includes $248 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at December 31, 2019. No amount was designated exclusively to fund GM Korea capital expenditures at December 31, 2020.
(b)    Includes $761 million and $2.3 billion in Cruise at December 31, 2020 and 2019.
(c)    Includes $943 million and $266 million in Cruise at December 31, 2020 and 2019.
(d)    Excludes mortgage- and asset-backed securities of $632 million at December 31, 2020 as these securities are not due at a single maturity date.

Proceeds from the sale of available-for-sale debt securities sold prior to maturity were $1.9 billion, $4.5 billion and $4.3 billion in the years ended December 31, 2020, 2019 and 2018. Net unrealized gains and losses on available-for-sale debt securities were insignificant in the years ended December 31, 2020, 2019 and 2018. Cumulative unrealized gains and losses on available-for-sale debt securities were insignificant at December 31, 2020 and 2019.

We liquidated our remaining shares in Lyft in the six months ended June 30, 2020. We recorded an insignificant unrealized loss in the years ended December 31, 2020 and 2019, and an unrealized gain of $142 million in Interest income and other non-operating income, net in the year ended December 31, 2018.
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the consolidated statements of cash flows:
December 31, 2020December 31, 2019
Cash and cash equivalents$19,992 $19,069 
Restricted cash included in Other current assets2,581 3,352 
Restricted cash included in Other assets544 522 
Total$23,117 $22,943