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 3 Months Ended 21 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2012
Jun. 30, 2004
Oct. 31, 2014
Jun. 30, 2004
Oct. 31, 2014
Indemnification Agreement [Member]
Jul. 31, 2014
Subpoena [Member]
Minimum [Member]
Jul. 31, 2014
Subpoena [Member]
Maximum [Member]
Oct. 31, 2014
Subpoena [Member]
Apr. 30, 2014
Subpoena [Member]
Jul. 31, 2014
Subpoena [Member]
Jun. 20, 2014
Perkin Elmer [Member]
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 Contingency, Unrecorded Amount         $ 48.5            
Gain Contingencies Prejudgement Interest     12.5                
Loss Contingency, Number of Defendants       2              
Escrow Deposit                     7.0
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    
Payments for Legal Settlements               0.4      
Estimated Litigation Liability, Current               0.4      
Estimated Litigation Liability, Noncurrent               1.2      
Additional Payment of Litigation Settlement Amount                   1.5  
Amount of Additional Capital Receipt Condition for Litigation Settlement           $ 10.0          
Percentage of Additional Payment of Litigation Settlement Amount over Additional Capital Receipt                   20.00%  
Litigation Settlement Period           2004 2014