XML 60 R49.htm IDEA: XBRL DOCUMENT v3.10.0.1
Acquisitions (Pro Forma Summary of All Acquisitions) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Business Combinations [Abstract]        
Revenue $ 3,101,600 $ 3,054,987 $ 5,956,427 $ 5,906,047
Net income $ 60,678 $ 56,126 $ 111,419 $ 109,162
Basic net income per share (in dollars per share) $ 2.45 $ 2.24 $ 4.47 $ 4.35
Diluted net income per share (in dollars per share) $ 2.44 $ 2.24 $ 4.45 $ 4.34