v2.3.0.11
Business Combinations (Effect Of Businesses Acquired) (Details) (USD $)
In Thousands, except Per Share data
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Business Combinations        
Revenue as reported $ 759,684 $ 584,681 $ 1,546,332 $ 1,188,197
Revenue of purchased businesses for the period prior to acquisition 15,449 116,703 40,827 237,564
Pro forma revenue 775,133 701,384 1,587,159 1,425,761
Income from continuing operations, as reported 46,706 37,906 104,888 89,889
Net income of purchased businesses for the period prior to acquisition, including pro forma purchase accounting adjustments 799 1,580 2,315 5,364
Pro forma income from continuing operations $ 47,505 $ 39,486 $ 107,203 $ 95,253
Basic earnings per share from continuing operations, as reported $ 0.32 [1] $ 0.27 [1] $ 0.72 [1] $ 0.63 [1]
Effect of purchased businesses for the period prior to acquisition $ 0.01 $ 0.01 $ 0.02 $ 0.04
Pro forma basic earnings per share from continuing operations $ 0.33 [1] $ 0.28 [1] $ 0.74 [1] $ 0.67 [1]
Diluted earnings per share from continuing operations, as reported $ 0.32 [1] $ 0.26 [1] $ 0.71 [1] $ 0.62 [1]
Effect of purchased businesses for the period prior to acquisition $ 0.01 $ 0.01 $ 0.02 $ 0.04
Pro forma diluted earnings per share from continuing operations $ 0.32 [1] $ 0.27 [1] $ 0.72 [1] $ 0.66 [1]
[1] The sum of the individual earnings per share amounts may not equal the total due to rounding.