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Commitments and Contingencies (Details) - TwinStrand Biosciences And University Of Washington vs. Guardant Health, Inc.
$ in Millions
1 Months Ended
Nov. 14, 2023
USD ($)
Oct. 31, 2021
patent
Dec. 31, 2023
USD ($)
Other Commitments [Line Items]      
Gain contingency, patents allegedly infringed upon, number | patent   4  
Settled Litigation      
Other Commitments [Line Items]      
Loss contingency, damages awarded, value $ 83.4    
Percentage of royalty 6.00%    
Reserve for payments related to litigation     $ 83.4