Credit Facility and Other Financing Information (Details 3) (Revolving Credit Facility [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,100,000,000.0
Line of credit facility, expiration date	Apr. 28, 2016
Minimum amount of borrowing capacity before a fixed charge coverage ratio applies	137,500,000.0
Line of credit, current borrowing capacity based on eligible collateral	972,100,000
Current borrowings on credit facility	90,000,000	0
Letters of credit, outstanding	67,100,000
Line of credit facility, remaining borrowing capacity	$ 815,000,000
Debt Instrument, Covenant Description	The Credit Facility contains common restrictions, including limitations on, among other things, distributions and dividends, acquisitions and investments, indebtedness, liens and affiliate transactions. Availability is calculated as the lesser of the credit facility commitment or the Company’s eligible collateral after advance rates, less outstanding revolver borrowings and letters of credit. The Company’s obligation under its Credit Facility is secured by its inventory and accounts receivable and availability under the Credit Facility fluctuates monthly based on the varying levels of eligible collateral. In addition, the Credit Facility requires maintenance of a minimum fixed charge coverage ratio of one to one if availability under the Credit Facility is less than $137.5.
Line of credit facility, Weighted Average Interest Rate (in hundredths)	2.20%