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Other Balance Sheet Components - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Estimated reimbursements to wholesalers and distributors	$ 111	$ 84
Lease liabilities - financing (Note 10)	31	25
Lease liabilities - operating (Note 10)	19	17
Research and development funding liability (Note 5)	0	43
Other	59	16
Other current liabilities	$ 220	$ 185

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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