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Transactions With Related Party (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Equity Method Investee [Member]
       
Related Party Transaction [Line Items]        
Variable Interest Entity Ownership Percentage     50.00%  
Co-venturer [Member]
       
Related Party Transaction [Line Items]        
Variable Interest Entity Ownership Percentage     50.00%  
Fiber [Member] | Co-venturer [Member]
       
Related Party Transaction [Line Items]        
Revenue from Related Parties $ 7.0 $ 5.0 $ 21.3 $ 16.5
Related Parties Amount in Cost of Sales $ 21.9 $ 18.1 $ 56.9 $ 50.7