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FAIR VALUE MEASUREMENTS
 12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
Cash and cash equivalents include cash in banks, highly liquid investments, and term deposits with maturities of three months or less recorded in “Cash and cash equivalents” on the Consolidated Balance Sheets. Short-term investments are available-for-sale debt securities and term deposits with maturities over three months recorded in “Short-term investments” on the Consolidated Balance Sheets. As the Company views these securities as available to support current operations, highly liquid securities with maturities beyond 12 months are classified as current assets. The Company’s available-for-sale debt securities are measured at fair value with unrealized gains and losses recorded in “Other comprehensive (loss) income” in the Consolidated Statements of Comprehensive Loss and reclassified to net loss upon maturity or sale of the security. Term deposits are recorded at cost, which approximates fair value due to their short time to maturity. Interest receivable on cash
equivalents and short-term investments is recorded in “Other current assets” on the Consolidated Balance Sheets and was not material of December 31, 2023 and 2024.

A three-level valuation hierarchy, based upon observable and unobservable inputs, is used for fair value measurements. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions based on the best evidence available. These two types of inputs create the following fair value hierarchy:

•Level 1 – Quoted prices for identical instruments in active markets
•Level 2 – Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations whose significant inputs are observable
•Level 3 – Instruments with model-derived valuations whose significant inputs are unobservable

The following table presents the fair value of the Company’s cash and cash equivalents and short-term investments and their corresponding level within the fair value hierarchy:

December 31, 2023December 31, 2024
LevelAmount
(in millions)		LevelAmount
(in millions)
Cash and cash equivalents:
Cash$1,245 $1,157 
Money market funds16,070 13,868 
Commercial paper2517 2184 
United States Treasury securities125 160 
Other items1
—— 225 
Total cash and cash equivalents$7,857 $5,294 
Short-term investments:
United States Treasury securities1$1,061 1$993 
Term deposits2450 2475 
Commercial paper—— 2378 
Corporate bonds—— 2374 
Certificates of deposit—— 2141 
Other items2
—— 245 
Total short-term investments3
$1,511 $2,406 
Total cash and cash equivalents and short-term investments$9,368 $7,700 
1 Includes certificates of deposit, corporate bonds, and yankee bonds.
2 Includes yankee bonds and agency discount notes.
3 As of December 31, 2024, $289 million is due between 12 and 18 months.

As of December 31, 2023 and 2024, the fair value of cash equivalents and short-term investments approximated their cost. Fair value measurements classified within Level 2 of the fair value hierarchy are determined using observable inputs other than quoted prices for identical assets in active markets.

Refer to Note 2 “Summary of Significant Accounting Policies” and Note 10 "Debt" for more information about the fair value of the Company’s derivative instruments and debt, respectively.