Fair Value Measurements

12 Months Ended

Dec. 31, 2021

The following table summarizes our assets measured at fair value and the classification by level of input within the fair value hierarchy (in millions):


			Fair Value Measurement at Reporting Date Using
Description	December 31, 2021		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Cash equivalents:
Money market funds	$	8,850	$	8,850	$	—
U.S. government securities	25		25		—
U.S. government agency securities	108		108		—
Certificates of deposit and time deposits	250		—		250
Corporate debt securities	60		—		60
Marketable securities:
U.S. government securities	10,901		10,901		—
U.S. government agency securities	5,927		5,927		—
Corporate debt securities	14,569		—		14,569
Total cash equivalents and marketable securities	$	40,690	$	25,811	$	14,879


			Fair Value Measurement at Reporting Date Using
Description	December 31, 2020		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Cash equivalents:
Money market funds	$	9,755	$	9,755	$	—
U.S. government securities	1,016		1,016		—

Certificates of deposit and time deposits	305		—		305
Corporate debt securities	12		—		12
Marketable securities:
U.S. government securities	20,921		20,921		—
U.S. government agency securities	11,698		11,698		—
Corporate debt securities	11,759		—		11,759
Total cash equivalents and marketable securities	$	55,466	$	43,390	$	12,076

We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value.

We also have assets and liabilities classified within Level 3 because factors used to develop the estimated fair value are unobservable inputs that are not supported by market activity. As of December 31, 2021, included in the total $6.78 billion of equity investments, $913 million was measured at fair value and was classified within Level 3 of the fair value measurement hierarchy on a non-recurring basis. As of December 31, 2020, our Level 3 equity investments were not material. For information regarding equity investments, see Note 5 — Equity Investments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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