Annual report pursuant to Section 13 and 15(d)

Contingencies (Details)

v3.10.0.1
Contingencies (Details)
$ in Millions
 1 Months Ended 12 Months Ended
Jul. 31, 2016
USD ($)
May 31, 2016
USD ($)
Jan. 31, 2016
USD ($)
Oct. 31, 2015
USD ($)
Jul. 31, 2018
USD ($)
Jul. 31, 2016
USD ($)
Jul. 31, 2014
USD ($)
Jun. 30, 2014
USD ($)
Contingencies (Details) [Line Items]                
Number of Pending Cases         7      
Loss Contingency Number of New Defendants         2      
Subpoena [Member]                
Contingencies (Details) [Line Items]                
Estimated Litigation Settlement Amount             $ 2.0  
Period Over Which Settlement Amount Has to Be Paid             5 years  
Additional Payment of Litigation Settlement Amount           $ 1.5    
Total Liability For Settlement Agreement         $ 0.4      
Perkin Elmer [Member]                
Contingencies (Details) [Line Items]                
Escrow Deposit               $ 7.0
Litigation Settlement, Amount Awarded from Other Party     $ 7.0          
Affymetrix Inc [Member]                
Contingencies (Details) [Line Items]                
Payments for Legal Settlements       $ 6.8        
Agilent Technologies, Inc. [Member]                
Contingencies (Details) [Line Items]                
Payments for Legal Settlements     $ 6.1          
Life Technologies Corporation [Member]                
Contingencies (Details) [Line Items]                
Payments for Legal Settlements   $ 24.3            
Illumina Inc [Member]                
Contingencies (Details) [Line Items]                
Payments for Legal Settlements $ 14.5