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Condensed Consolidated Balance Sheet Components - Summary of Other Current Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Accrued Liabilities, Current [Abstract]    
Accrued research and development $ 37 $ 45
Accrued personnel expenses 12 25
Income taxes payable 1  
other 4 6
Total other current liabilities $ 54 $ 76