v3.21.1
Marketable and Other Securities
 3 Months Ended
Mar. 31, 2021
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 LevelMarch 31, 2021December 31, 2020
Cash and cash equivalents
Cash and time deposits$7,294 $8,010 
Available-for-sale debt securities
U.S. government and agencies2631 1,370 
Corporate debt25,516 3,476 
Sovereign debt23,055 2,051 
Total available-for-sale debt securities – cash equivalents9,202 6,897 
Money market funds15,113 5,085 
Total cash and cash equivalents(a)$21,609 $19,992 
Marketable debt securities
U.S. government and agencies2$927 $1,771 
Corporate debt23,099 3,630 
Mortgage and asset-backed2594 632 
Sovereign debt23,151 3,013 
Total available-for-sale debt securities – marketable securities(b)$7,771 $9,046 
Restricted cash
Cash and cash equivalents $405 $269 
Money market funds12,862 2,856 
Total restricted cash$3,267 $3,125 
Available-for-sale debt securities included above with contractual maturities(c)
Due in one year or less$13,568 
Due between one and five years2,789 
Total available-for-sale debt securities with contractual maturities$16,357 
__________
(a)Includes $2.2 billion and $761 million in Cruise at March 31, 2021 and December 31, 2020.
(b)Includes $1.9 billion and $943 million in Cruise at March 31, 2021 and December 31, 2020.
(c)Excludes mortgage- and asset-backed securities of $594 million at March 31, 2021 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 $504 million and $366 million in the three months ended March 31, 2021 and 2020. Net unrealized gains and losses on available-for-sale debt securities were insignificant in the three months ended March 31, 2021 and 2020. Cumulative unrealized gains and losses on available-for-sale debt securities were insignificant at March 31, 2021 and December 31, 2020.
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the total shown in the condensed consolidated statement of cash flows:
March 31, 2021
Cash and cash equivalents$21,609 
Restricted cash included in Other current assets2,702 
Restricted cash included in Other assets565 
Total$24,876