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Fair Value of Financial Instruments
3 Months Ended
Mar. 31, 2012
Fair Value of Financial Instruments [Abstract]  
Fair Value of Financial Instruments
(7)
Fair Value of Financial Instruments:  The fair values of cash and cash equivalents, receivables and short-term borrowings approximate their carrying values due to the short-term nature of the instruments. The carrying amount and fair value of the Company's long-term debt at March 31, 2012 was $541 million and $564 million, respectively and $507 million and $532 million at December 31, 2011, respectively. The fair value of long-term debt is calculated by discounting the future cash flows of the debt at rates based on instruments with credit risk, terms and maturities similar to the Company's existing debt arrangements (level 2).