Quarterly report pursuant to Section 13 or 15(d)

Contingencies (Details)

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Contingencies (Details) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 9 Months Ended 21 Months Ended 1 Months Ended 9 Months Ended
Nov. 30, 2012
Jun. 30, 2004
Apr. 30, 2014
Jun. 30, 2004
Apr. 30, 2014
Indemnification Agreement [Member]
Apr. 22, 2014
Affymetrix Inc [Member]
Agreement [Member]
Apr. 30, 2014
Subpoena [Member]
Apr. 30, 2014
Minimum [Member]
Subpoena [Member]
Apr. 30, 2014
Maximum [Member]
Subpoena [Member]
Contingencies (Details) [Line Items]                  
Gain Contingency, Patents Allegedly Infringed upon, Number   6              
Number of Licensee Patents   4   4          
Gain Contingency, Patents Found Not Infringed upon, Number 1                
Gain Contingency, Unrecorded Amount         $ 48.5        
Gain Contingencies Prejudgement Interest     12.5            
Loss Contingency, Number of Defendants     6            
Loss Contingency, New Claims Filed, Number       6          
Litigation Settlement, Amount           5.1      
Proceeds from Legal Settlements           4.3      
Litigation Settlement, Expense           0.8      
Estimated Litigation Settlement Amount             2.0    
Period Over Which Settlement Amount Has To Be Paid             5 years    
Estimated Litigation Liability, Current             0.4    
Estimated Litigation Liability, Noncurrent             1.6    
Additional Payment of Litigation Settlement Amount             $ 1.5    
Litigation Settlement Period               2004 2013