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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis
The following tables summarize the types of assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy (in millions):
Fair value measurement as of December 31, 2025Level 1Level 2Level 3Total
Assets
Money market funds$155 $— $— $155 
U.S. treasury securities— 359 — 359 
Corporate securities and commercial paper— 487 — 487 
Certificate of deposit— 9 — 9 
Total assets measured at fair value$155 $855 $— $1,010 
Fair value measurement as of December 31, 2024Level 1Level 2Level 3Total
Assets
Money market funds$120 $— $— $120 
U.S. treasury securities— 251— 251
Corporate securities and commercial paper— 592— 592
U.S. government agency obligations— 5 — 5
Certificate of deposit— 24 — 24
Total assets measured at fair value$120 $872 $— $992 
Liabilities
Liability for sale of future royalties$— $— $21 $21 
Total liabilities measured at fair value$— $— $21 $21 
Summary of Changes of Liabilities for Sale of Future Royalties
The liability is reported in Other noncurrent liabilities in the Consolidated Balance Sheets and changes were as follows (in millions):
Year Ended December 31
20252024
Beginning balance$21 $19 
Interest accretion— 2 
Ending balance$21 $21