Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Investments, Debt and Equity Securities [Abstract]

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, 2019		September 30, 2020
	Total Estimated Fair Value		Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Total Estimated Fair Value
Cash	$	9,776	$	9,553	$	—	—		$	9,553
Level 1 securities:
Money market funds	18,850		17,701		—		—		17,701
Equity securities (1)	202								452
Level 2 securities:
Foreign government and agency securities	4,794		10,270		1		—		10,271
U.S. government and agency securities	7,080		7,656		34		(3)		7,687
Corporate debt securities	11,881		18,849		276		(5)		19,120
Asset-backed securities	2,360		3,245		31		(5)		3,271
Other fixed income securities	394		500		8		—		508
Equity securities (1)	5								114
	$	55,342	$	67,774	$	350	$	(13)	$	68,677
Less: Restricted cash, cash equivalents, and marketable securities (2)	(321)								(275)
Total cash, cash equivalents, and marketable securities	$	55,021							$	68,402

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(1)The related unrealized gain (loss) recorded in “Other income (expense), net” was $(55) million and $150 million in Q3 2019 and Q3 2020, and $27 million and $351 million for the nine months ended September 30, 2019 and 2020.

(2)We are required to pledge or otherwise restrict a portion of our cash, cash equivalents, and marketable securities as collateral for real estate leases, amounts due to third-party sellers in certain jurisdictions, debt, and standby and trade letters of credit. We classify cash, cash equivalents, and marketable 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 4 — Commitments and Contingencies.”

Investments Classified by Contractual Maturity Date

The following table summarizes the remaining contractual maturities of our cash equivalents and marketable fixed income securities as of September 30, 2020 (in millions):


	Amortized Cost		Estimated Fair Value
Due within one year	$	38,791	$	38,803
Due after one year through five years	16,106		16,400
Due after five years through ten years	753		758
Due after ten years	2,571		2,597
Total	$	58,221	$	58,558

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, 2019		September 30, 2020
Cash and cash equivalents	$	36,092	$	29,930
Restricted cash included in accounts receivable, net and other	276		239
Restricted cash included in other assets	42		33
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$	36,410	$	30,202

Consolidated Statements of Cash Flow Reconciliation - Restricted Cash


	December 31, 2019		September 30, 2020
Cash and cash equivalents	$	36,092	$	29,930
Restricted cash included in accounts receivable, net and other	276		239
Restricted cash included in other assets	42		33
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$	36,410	$	30,202