Fair Value	12 Months Ended
Dec. 31, 2013
Fair Value [Abstract]
Fair Value	Note O — Fair Value We use a three-tier fair value hierarchy, which classifies the inputs used in measuring fair values, in determining the fair value of our non-financial assets and non-financial liabilities, which consist primarily of goodwill. These tiers include: Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. There were no changes in the methods and assumptions used in measuring fair value during the period. At December 31, 2013, our financial instruments include cash and cash equivalents, receivables, payables, senior debt and senior notes. The carrying amount of cash and cash equivalents, receivables and payables approximates fair value at December 31, 2013 and 2012, because of the short maturities of these instruments. Our senior debt is variable rate debt that re-prices frequently and entails no significant change in credit risk and, as a result, fair value approximates carrying value. The fair value of our senior notes is based on Level 1 inputs. At December 31, 2013, the fair value of our 6.625% senior notes was $316.7 million, which was approximately $16.7 million above their carrying value of $300.0 million. At December 31, 2012, the fair value of our 6.625% senior notes was $327.0 million, which was approximately $27.0 million above their carrying value of $300.0 million. At December 31, 2013, the fair value of our 4.75% senior notes was $234.7 million, which was approximately $15.3 million below the carrying value of $250.0 million.

Fair Value

12 Months Ended

Dec. 31, 2013

Note O — Fair Value

We use a three-tier fair value hierarchy, which classifies the inputs used in measuring fair values, in determining the fair value of our non-financial assets and non-financial liabilities, which consist primarily of goodwill. These tiers include: Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. There were no changes in the methods and assumptions used in measuring fair value during the period.

At December 31, 2013, our financial instruments include cash and cash equivalents, receivables, payables, senior debt and senior notes. The carrying amount of cash and cash equivalents, receivables and payables approximates fair value at December 31, 2013 and 2012, because of the short maturities of these instruments. Our senior debt is variable rate debt that re-prices frequently and entails no significant change in credit risk and, as a result, fair value approximates carrying value. The fair value of our senior notes is based on Level 1 inputs.

At December 31, 2013, the fair value of our 6.625% senior notes was $316.7 million, which was approximately $16.7 million above their carrying value of $300.0 million. At December 31, 2012, the fair value of our 6.625% senior notes was $327.0 million, which was approximately $27.0 million above their carrying value of $300.0 million. At December 31, 2013, the fair value of our 4.75% senior notes was $234.7 million, which was approximately $15.3 million below the carrying value of $250.0 million.