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Contingencies (Details) - Mentor Patent Litigation - Pending Litigation
$ in Millions
Oct. 10, 2014
USD ($)
Oct. 04, 2012
lawsuit
patent
Mar. 16, 2017
USD ($)
Loss Contingencies [Line Items]      
Loss contingency, patent infringement lawsuits | lawsuit   3  
Loss contingency, patents allegedly infringed | patent   3  
Loss contingency, value of damages sought $ 36.0    
Loss contingency, estimate of possible loss accrued     $ 39.0