Goodwill and Other Intangible Assets (Intangible Assets) (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 1,544,965,000 $ 1,377,179,000
Accumulated Amortization 363,546,000 178,188,000
Net 1,181,419,000 1,198,991,000
Definite-lived Intangible Assets, Future Amortization Expense [Abstract]    
Future amortization expense, 2014 213,200,000  
Future amortization expense, 2015 194,000,000  
Future amortization expense, 2016 166,700,000  
Future amortization expense, 2017 147,500,000  
Future amortization expense, 2018 137,200,000  
Future amortization expense, after 2018 322,800,000  
Customer Relationships
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,528,475,000 1,346,874,000
Accumulated Amortization 355,737,000 155,343,000
Net 1,172,738,000 1,191,531,000
Acquired software
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 0 3,765,000
Accumulated Amortization 0 3,765,000
Net 0 0
Trademarks/Trade names
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,000,000 14,070,000
Accumulated Amortization 250,000 14,070,000
Net 750,000 0
Non-compete agreements
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 13,430,000 10,410,000
Accumulated Amortization 6,463,000 4,294,000
Net 6,967,000 6,116,000
Licenses
   
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 2,060,000 2,060,000
Accumulated Amortization 1,096,000 716,000
Net $ 964,000 $ 1,344,000