Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v2.4.0.8
Acquisitions (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 0 Months Ended 0 Months Ended
Jul. 31, 2014
Bell [Member]
Jul. 31, 2014
Bell [Member]
Jul. 31, 2014
Bell [Member]
Customer relationships [Member]
Jun. 16, 2014
Whale [Member]
Jun. 16, 2014
Whale [Member]
Jun. 16, 2014
Whale [Member]
Trade names [Member]
Jun. 16, 2014
Whale [Member]
Customer relationships [Member]
Jun. 16, 2014
Whale [Member]
Patents and proprietary technology [Member]
Business Acquisition [Line Items]                
Business Acquisition, Percentage of Voting Interests Acquired   100.00%     100.00%      
Net cash consideration paid to acquire business $ 11.8     $ 30.0        
Payments to retire acquiree debt       10.0        
Fair value of identifiable intangible assets acquired         11.9      
Goodwill, Acquired During Period 0.8     8.4        
Finite-lived Intangible Assets Acquired     2.0       6.1 2.1
Indefinite-lived Intangible Assets Acquired           $ 3.7    
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     8 years       14 years 5 years