Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Fair Value by Major Security Type

The following table summarizes, by major security type, our cash, cash equivalents, restricted cash, and marketable securities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in millions):

	December 31, 2022
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Total Estimated Fair Value
Cash	$	10,666	$	—	$	—	$	10,666
Level 1 securities:
Money market funds	27,899		—		—		27,899
Equity securities (1)							3,709
Level 2 securities:
Foreign government and agency securities	537		—		(2)		535
U.S. government and agency securities	2,301		—		(155)		2,146
Corporate debt securities	23,111		—		(484)		22,627
Asset-backed securities	2,721		—		(149)		2,572
Other debt securities	249		—		(12)		237
	$	67,484	$	—	$	(802)	$	70,391
Less: Restricted cash, cash equivalents, and marketable securities (2)							(365)
Total cash, cash equivalents, and marketable securities							$	70,026

	December 31, 2023
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Total Estimated Fair Value
Cash	$	11,706	$	—	$	—	$	11,706
Level 1 securities:
Money market funds	39,160		—		—		39,160
Equity securities (1)							4,658
Level 2 securities:
Foreign government and agency securities	505		—		—		505
U.S. government and agency securities	1,789		1		(91)		1,699
Corporate debt securities	27,996		—		(191)		27,805
Asset-backed securities	1,707		—		(61)		1,646
Other debt securities	108		—		(4)		104
	$	82,971	$	1	$	(347)	$	87,283
Less: Restricted cash, cash equivalents, and marketable securities (2)							(503)
Total cash, cash equivalents, and marketable securities							$	86,780

___________________

(1)The related unrealized gain (loss) recorded in “Other income (expense), net” was $11.6 billion, $(13.6) billion, and $1.0 billion for the years ended December 31, 2021, 2022, and 2023.

(2)We are required to pledge or otherwise restrict a portion of our cash, cash equivalents, and marketable debt securities primarily as collateral for real estate, amounts due to third-party sellers in certain jurisdictions, debt, and standby and trade letters of credit. We classify cash, cash equivalents, and marketable debt securities with use restrictions of less than twelve months as “Accounts receivable, net and other” and of twelve months or longer as non-current “Other assets” on our consolidated balance sheets. See “Note 7 — Commitments and Contingencies.”

Summary of Gross Realized Gains (Losses) on Investments

The following table summarizes gross gains and gross losses realized on sales of marketable debt securities (in millions):

	Year Ended December 31,
	2021		2022		2023
Realized gains	$	85	$	43	$	2
Realized losses	38		341		67

Summary of Contractual Maturities of Investments

The following table summarizes the remaining contractual maturities of our cash equivalents and marketable debt securities as of December 31, 2023 (in millions):

	Amortized Cost		Estimated Fair Value
Due within one year	$	65,224	$	65,159
Due after one year through five years	4,635		4,430
Due after five years through ten years	411		394
Due after ten years	995		936
Total	$	71,265	$	70,919

Actual maturities may differ from the contractual maturities because borrowers may have certain prepayment conditions.

Consolidated Statements of Cash Flow Reconciliation - Cash and Cash Equivalents

The following table provides a reconciliation of the amount of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets to the total of the same such amounts shown in the consolidated statements of cash flows (in millions):

	December 31, 2022		December 31, 2023
Cash and cash equivalents	$	53,888	$	73,387
Restricted cash included in accounts receivable, net and other	358		497
Restricted cash included in other assets	7		6
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$	54,253	$	73,890

Consolidated Statements of Cash Flow Reconciliation - Restricted Cash

The following table provides a reconciliation of the amount of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets to the total of the same such amounts shown in the consolidated statements of cash flows (in millions):

	December 31, 2022		December 31, 2023
Cash and cash equivalents	$	53,888	$	73,387
Restricted cash included in accounts receivable, net and other	358		497
Restricted cash included in other assets	7		6
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$	54,253	$	73,890