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Leases (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Leases [Abstract]      
Rental expense $ 67,000,000 $ 68,000,000 $ 78,000,000
2013 55,908,000    
2014 43,089,000    
2015 30,246,000    
2016 21,234,000    
2017 15,660,000    
Thereafter 35,115,000    
Total minimum lease payments $ 201,252,000