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Business Combinations (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Jun. 30, 2014
Business Acquisition [Line Items]    
Acquisition purchase price $ 155.0  
Aggregate purchase price 10.9  
Drew on credit facility $ 150.0 $ 150.0
Additional Acquisitions
   
Business Acquisition [Line Items]    
Number of business acquired 3