Cash and Cash Equivalents, and Marketable Securities

6 Months Ended

Jun. 30, 2019

Cash and Cash Equivalents, and Marketable Securities [Abstract]

Cash and Cash Equivalents, and Marketable Securities

The following table sets forth the cash and cash equivalents, and marketable securities (in millions):



	June 30, 2019		December 31, 2018
Cash and cash equivalents:
Cash	$	3,380	$	2,713
Money market funds	10,151		6,792
U.S. government securities	163		90
U.S. government agency securities	—		54
Certificate of deposits and time deposits	163		369
Corporate debt securities	20		1
Total cash and cash equivalents	13,877		10,019
Marketable securities:
U.S. government securities	17,338		13,836
U.S. government agency securities	7,792		8,333
Corporate debt securities	9,589		8,926
Total marketable securities	34,719		31,095
Total cash and cash equivalents, and marketable securities	$	48,596	$	41,114

The gross unrealized gains on our marketable securities were $179 million and $24 million as of June 30, 2019 and December 31, 2018, respectively. The gross unrealized losses on our marketable securities were $69 million and $357 million as of June 30, 2019 and December 31, 2018, respectively. In addition, gross unrealized losses that had been in a continuous loss position for 12 months or longer were $67 million and $332 million as of June 30, 2019 and December 31, 2018, respectively. As of June 30, 2019, we considered the decreases in market value of our marketable securities to be temporary in nature and did not consider any of our investments to be other-than-temporarily impaired.

The following table classifies our marketable securities by contractual maturities (in millions):



	June 30, 2019
Due in one year	$	12,730
Due after one year to five years	21,989
Total	$	34,719