v2.4.0.8
Business Combinations Business Acquisition Proforma Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Business Combinations [Abstract]                      
Revenues $ 577,438 $ 443,835 $ 443,912 $ 432,421 $ 503,195 $ 325,869 $ 449,527 $ 493,483 $ 1,897,606 $ 1,772,074 $ 1,748,667
Income (Loss), Including Portion Attributable to Noncontrolling Interest 190,007 125,623 153,640 112,967 153,803 50,522 137,821 93,524 582,237 435,670 413,566
Business Acquisition, Pro Forma Revenue                 1,924,316 1,812,635  
Business Acquisition, Pro Forma Net Income (Loss)                 $ 591,377 $ 442,096