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Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Derivative Instruments And Hedging Activities [Abstract]  
Derivatives reclassified as increase to interest expense $ 6.0
Fair value of derivative net liability position 9.3
Derivative counterparty posted collateral against obligation $ 24.0