v3.4.0.3
Acquisition - Pro Forma Financial Information (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2015
USD ($)
$ / shares
Business Combinations [Abstract]  
Operating Revenues | $ $ 2,550.9
Net Income | $ $ 329.9
Earnings per share (Basic) | $ / shares $ 1.05
Earnings per share (Diluted) | $ / shares $ 1.04