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Investments
 12 Months Ended
Dec. 31, 2024
Investments [Abstract]  
Investments
Our investments were as follows as of December 31:
(in millions)20242023
Short-term investments:
Equity investment security$11 $11 
Held-to-maturity investment securities— 3 
Time deposits1 

— 
Total short-term investments$12 $14 
Long-term investments:
Other investments$90 $80 
Restricted time deposits(1)
— 355 
Total long-term investments$90 $435 
(1)As of December 31, 2023 the balance of restricted time deposits contained $96 million of restricted cash equivalents. See Note 11.
Equity Investment Security
Our equity investment security is a U.S. dollar denominated investment in a fixed income mutual fund. Realized and unrealized gains and losses were immaterial for each of the years ended December 31, 2024, 2023 and 2022.
Other Investments
As of December 31, 2024 and 2023, we had an equity method investment of $84 million and $74 million, respectively, in the technology sector. Additionally, as of each of December 31, 2024 and 2023, we had equity securities without a readily determinable fair value of $6 million.