v2.4.0.8
Pro Forma Effect of Businesses Acquired (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Business Acquisition    
Revenue, as reported $ 1,625,777 $ 1,195,997
Pro forma revenue 1,629,621 1,533,874
Net income, as reported 104,653 84,592
Pro forma net income 104,958 97,872
Earnings per share, basic $ 0.35 [1] $ 0.28 [1]
Pro forma earnings per share-basic (a) $ 0.35 $ 0.33
Earnings per share, diluted $ 0.34 [1] $ 0.28 [1]
Pro forma earnings per share-diluted (a) $ 0.34 $ 0.32
Keystone Specialty
    
Business Acquisition    
Revenue of purchased businesses for the period prior to acquisition 3,433 167,444
Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments 241 6,695
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.02
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.02
Sator
    
Business Acquisition    
Revenue of purchased businesses for the period prior to acquisition 0 95,003
Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments 0 2,550
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.01
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.01
All 2014 and 2013 Acquisitions Excluding Keystone Specialty and Sator
    
Business Acquisition    
Revenue of purchased businesses for the period prior to acquisition 411 75,430
Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments $ 64 $ 4,035
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.01
Effect of purchased businesses for the period prior to acquisition $ 0.00 $ 0.01
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