Quarterly report pursuant to Section 13 or 15(d)

Contingencies (Details)

v3.4.0.3
Contingencies (Details)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 04, 2016
USD ($)
May. 30, 2016
USD ($)
Oct. 31, 2015
USD ($)
Jul. 31, 2015
USD ($)
Nov. 30, 2012
Jun. 30, 2004
Apr. 30, 2014
USD ($)
Apr. 30, 2016
USD ($)
Jan. 31, 2016
USD ($)
Contingencies (Details) [Line Items]                  
Gain Contingency, Patents Allegedly Infringed upon, Number           6      
Number of Licensee Patents               4  
Gain Contingency, Patents Found Not Infringed upon, Number         1        
Gain Contingencies Prejudgement Interest               $ 12.5  
Subpoena [Member]                  
Contingencies (Details) [Line Items]                  
Estimated Litigation Liability, Current               10.0  
Additional amount accrued for achievement of milestone                 $ 1.5
Total liability for settlement agreement               2.7  
Current liability for settlement agreement               1.9  
Other liability for settlement agreement               $ 0.8  
Luminex [Member]                  
Contingencies (Details) [Line Items]                  
Litigation Settlement, Amount       $ 7.1          
Siemens [Member]                  
Contingencies (Details) [Line Items]                  
Litigation Settlement, Amount       6.7          
Royalty Revenue       $ 1.0          
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   $ 35.0              
Subpoena [Member]                  
Contingencies (Details) [Line Items]                  
Investigation Period               The time period initially covered by the investigation was from 2004 through 2011  
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  
Percentage of Additional Payment of Litigation Settlement Amount over Additional Capital Receipt               20.00%  
Minimum [Member] | Siemens [Member]                  
Contingencies (Details) [Line Items]                  
Litigation Settlement Period       2015          
Minimum [Member] | Subpoena [Member]                  
Contingencies (Details) [Line Items]                  
Amount of Additional Capital Receipt Condition for Litigation Settlement               $ 10.0  
Litigation Settlement Period               2004  
Maximum [Member] | Siemens [Member]                  
Contingencies (Details) [Line Items]                  
Litigation Settlement Period       2019          
Maximum [Member] | Subpoena [Member]                  
Contingencies (Details) [Line Items]                  
Litigation Settlement Period               2014  
Indemnification Agreement [Member]                  
Contingencies (Details) [Line Items]                  
Gain Contingency, Unrecorded Amount               $ 48.5