Cash and Cash Equivalents, Investments and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2022

Cash and Cash Equivalents [Abstract]

Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Market Value of Cash and Cash Equivalents and Available-for-Sale Investments

The following tables present the amortized cost, gross unrealized gains and losses and estimated fair market value of our cash and cash equivalents, investments, and restricted cash as of the dates presented (in millions):


	September 30, 2022
	Amortized Cost		Gross Unrealized Losses		Estimated Fair Market Value
Cash	$	153	$	—	$	153
Cash equivalents:
Money market funds	1,820		—		1,820
Short-term investments:
U. S. government agency securities	1,371		(18)		1,353
Corporate bonds	119		(1)		118
Treasury bills	45		—		45
Restricted cash	2		—		2
Total	$	3,510	$	(19)	$	3,491


	December 31, 2021
	Amortized Cost		Gross Unrealized Losses		Estimated Fair Market Value
Cash	$	183	$	—	$	183
Cash equivalents:
Money market funds	2,132		—		2,132
Short-term investments:
U.S. government agency securities	473		(2)		471
Corporate bonds	33		—		33
Commercial paper	10		—		10
Restricted cash	1		—		1

Total	$	2,832	$	(2)	$	2,830

Debt Securities, Available-for-sale

The following table presents available-for-sale investments by contractual maturity date as of September 30, 2022 (in millions):


	Amortized Cost		Estimated Fair Market Value
Due in one year or less	$	1,096	$	1,083
Due after one year	439		433
Total	$	1,535	$	1,516